Performance Plenum

- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
Kit Includes
- High Flow Air Filter
- Plenum by IPD
- Throttle Body 74mm
- Exhaust Boxes
- Sports Cats 200 cell
- Equal Lenght Headers K16
Sports Exhaust Muffler DesignTek VALVETRONIC system with 200 SPORTS CELL CATS. + Headers.
High Grade stainless steel equal length headers.K16 Sport stainless steel headers have been designed to increase HP and TQ on cars fitted with the OEM K16 turbochargers. The short design is perfectly matched for the exhaust travel from the heads to the K16 turbo for better boost response and power throughout the rev range. The smooth flow through the mandrel bends and pyramid merge collector offer superior flow characteristics as compared to the OEM headers. Power gains are increased by 14 HP and 16 Ft. TQ with no other modifications.Adds up to 14 HP / 16 Ft. TQ
For the ultimate performance gains we recommend this set is fitted with an ECU remap giving BHP and Torque that you can really feel and superb sports car sound.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
POWERKIT9962
The product you are viewing cross references to these numbers
This kit is comprised of the following items:




- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
Kit Includes
- High Flow Air Filter
- Plenum by IPD
- Throttle Body 74mm
- Exhaust Boxes
- Sports Cats 200 cell
Sports Exhaust Muffler + Cats 200 cell DESIGNTEK 200CPSI Hi-Flow sports catalysts+ Headers. Fits with original tail pipes.
For the ultimate performance gains we recommend this set is fitted with an ECU remap giving BHP and Torque that you can really feel and superb sports car sound.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
POWERKIT9963
The product you are viewing cross references to these numbers
This kit is comprised of the following items:




- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
Kit Includes
- Air Induction Kit
- Plenum by IPD
- Throttle Body 82mm
- Exhaust Cat back
- Sports Cats 200 cell
- Sports Headers
- Gaskets & Clamps
BIG BORE Stage 2 Performance exhaust package. High Grade stainless steel exhaust system for Porsche 996. 14 - 16 gauge T304.
For the ultimate performance gains we recommend this set is fitted with an ECU remap giving BHP and Torque that you can really feel and superb sports car sound.
Note: The Plenum is only for CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY 996 CABLE THROTTLE CARS
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
POWERKIT9961
The product you are viewing cross references to these numbers
This kit is comprised of the following items:





- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>

Dyno tested power gains with our ECU remap archiving and extra +30Bhp To read more about this power increase Click Here
IPD
Porsche has been controlling engine output by restricting the inlet track for decades. This has been successfully accomplished by utilizing smaller throttle bodies. This simple power control solution has been a very effective way of preventing lower level models from out performing certain flagship models, especially models with prolific racing pedigree. Although the factory engine packages are fantastic performance machines, they are engineered and developed to achieve specific performance numbers that satisfy a target demographic and compete with rival brands. Unfortunately driving enthusiasts who seek an elevated Porsche driving experience require performance levels well outside the target market.
Power improvements will be fully realized once the factory ECU/DME makes all the necessary "adaptation" requirements. This process can be expedited with a series of "hard pulls" or spirited full throttle acceleration runs through the gears. Of course this should only be performed on a closed course circuit.
Induction Kit
Engineered for maximum power and sound. This engineered system eliminates the OEM restrictive airbox and incorporates a high flow cone air filter and sealed fresh air chamber. A cone filter has superior air flow characteristics as compared to flat panel filters. The cone filter better shapes the air as it enters through the filter for smoother straighter more formed air. Next, we have CMC machined a MAF housing to the exact tolerances of the OEM housing for precise MAF reading and NO CHECK ENGINE LIGHTS. In addition, the sealed air chamber sections off the cone air filter from the engine compartment so that it can only draw cool outside air for more power. Finally, the system is injected molded from crosslink polyethylene which has the lowest thermal conductivity rating of any single-layered moldable material available on the market today. This is key in keeping intake temperatures low and increasing power.
Fits:
Porsche 997 Carrera
Porsche 996 Carrera*
(*FOR CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY CABLE THROTTLE CARS)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
IPDKIT99602
The product you are viewing cross references to these numbers
This kit is comprised of the following items:





- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

The all mighty 996 Turbo may be the perfect Porsche of them all to benefit from the IPD Plenum. Horsepower and torque gains are substantial and immediate (no adaptation required).
Horsepower improvements range from 30 to 35 and boost response improves considerably making for longer, stronger and of course more pleasurable power curves. The IPD plenum develops horsepower throughout the entire power band, especially where it's needed most, from mid range to top end.
Installation of the 996 Turbo Plenum is very challenging and installation should only be performed by a seasoned and qualified Porsche technician.
The 996 Turbo 74mm "Competition" Plenum is designed to function with more seriously modified Turbos developing over 600+ horsepower. Although this 74mm application has been used with great success on a variety of Turbos ranging from mildly modified to 1000+ HP.
This application requires the larger 74mm Porsche throttle body (additional purchase required) and comes with additional hardware to complete the kit. This "Competition Turbo" Plenum will help modified 996 Turbos realize maximum performance.
The increased air flow and air speed develop by the larger Plenum is designed to work with larger turbos, intercoolers, intake piping, high flow Y Pipes and more aggressive software.
Horsepower gains start around 35 hp and deliver max power slightly higher in the rev range creating better top end performance without the drop in power experienced with the factory air distributor.
996 Turbo Competition Plenum: HP Gains 24 / Torque Gains 26.
Fits:
Porsche 996 Turbo/S/X50/ GT2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
IPDKIT996T1
The product you are viewing cross references to these numbers
This kit is comprised of the following items:





- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

The all mighty 996 Turbo may be the perfect Porsche of them all to benefit from the IPD Plenum. Horsepower and torque gains are substantial and immediate (no adaptation required).
Horsepower improvements range from 30 to 35 and boost response improves considerably making for longer, stronger and of course more pleasurable power curves. The IPD plenum develops horsepower throughout the entire power band, especially where it's needed most, from mid range to top end.
Installation of the 996 Turbo Plenum is very challenging and installation should only be performed by a seasoned and qualified Porsche technician.
The 996 Turbo 74mm "Competition" Plenum is designed to function with more seriously modified Turbos developing over 600+ horsepower. Although this 74mm application has been used with great success on a variety of Turbos ranging from mildly modified to 1000+ HP.
This application requires the larger 74mm Porsche throttle body (additional purchase required) and comes with additional hardware to complete the kit. This "Competition Turbo" Plenum will help modified 996 Turbos realize maximum performance.
The increased air flow and air speed develop by the larger Plenum is designed to work with larger turbos, intercoolers, intake piping, high flow Y Pipes and more aggressive software.
Horsepower gains start around 35 hp and deliver max power slightly higher in the rev range creating better top end performance without the drop in power experienced with the factory air distributor.
996 Turbo Competition Plenum: HP Gains 24 / Torque Gains 26.
Fits:
Porsche 996 Turbo/S/X50/ GT2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
IPDKIT996TT
The product you are viewing cross references to these numbers
This kit is comprised of the following items:





- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005

Fits:
Porsche Porsche 996 Carrera C2 3.6L
Porsche Porsche 996 Carrera C4 3.6L
Porsche Porsche 996 Carrera C2 3.4L*
Porsche Porsche 996 Carrera C4 3.4L*
(*FOR CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY CABLE THROTTLE CARS)
Porsche has been controlling engine output by restricting the inlet track for decades. This has been successfully accomplished by utilizing smaller throttle bodies. This simple power control solution has been a very effective way of preventing lower level models from out performing certain flagship models, especially models with prolific racing pedigree. Although the factory engine packages are fantastic performance machines, they are engineered and developed to achieve specific performance numbers that satisfy a target demographic and compete with rival brands. Unfortunately driving enthusiasts who seek an elevated Porsche driving experience require performance levels well outside the target market.
All of the IPD Plenums deliver substantial power and torque gains, but when combined with larger throttle bodies they perform even better. All of the IPD "Competition" Plenums utilize the next largest size throttle body offered by Porsche. In this case, the Competition Carrera upgrades the factory OE 74mm throttle body with Porsche's 82mm 997 GT3 throttle body. All of our Competition Plenums are designed to perform with cars equipped with high performance exhaust systems. The more extensive the exhaust system (headers, kats and mufflers) the better. Optimizing air intake and exhaust together creates a balanced performance package that allows the engine to inhale and exhale more air thus creating more power and torque.
IPD has pioneered another new Plenum design with the Competition Carrera Plenum. Laminar flows and volumetric efficiencies have been further enhanced with our unique and innovative internal merge collector area. This completely new approach has yielded not only great performance gains but more linear power delivery and improved throttle response as well. Gains vary depending on pre-existing mods and quality of after-market exhaust installed. As we all "should" know, horsepower and torque become harder to find and typically more expensive as we climb the proverbial performance ladder. That being said, performance components yield different power gains depending on the order they were installed. IPD tests and evaluates all products on bone stock cars, this establishes a level playing field and a better "apples to apples" comparison. The Competition Carrera Plenum however is designed to work with applications that are already moderately to heavily modified. Power gains will vary with each Carrera, but the bottom line is, there will be noticeable and impressive gains that are sure to make any Porsche Carrera driving enthusiast smile.
Power improvements will be fully realized once the factory ECU/DME makes all the necessary "adaptation" requirements. This process can be expedited with a series of "hard pulls" or spirited full throttle acceleration runs through the gears. Of course this should only be performed on a closed course circuit.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
IPDKIT99601
The product you are viewing cross references to these numbers
This kit is comprised of the following items:





- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>

Fits:
Porsche Porsche 996 Carrera C2 3.6L
Porsche Porsche 996 Carrera C4 3.6L
Porsche Porsche 996 Carrera C2 3.4L*
Porsche Porsche 996 Carrera C4 3.4L*
(*FOR CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY CABLE THROTTLE CARS)
Fits:
Porsche 997 GEN1 3.6L
Porsche 997 GEN1 3.8L S
The 996 did not mark the beginning of a new Porsche chapter, it marked the beginning of a new Porsche book. The prolific 911 was baptized and emerged water cooled, leaving the legendary air cooled engine to live in Porsche history.
The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
Just like the Carrera S, it's difficult to find power for the naturally aspirated 3.4L Carrera, but the IPD Plenum does it better than any other after market mod available. This simple bolt on performance upgrade replaces the factory plastic air distributor with the IPD patented aluminum "Y" style Plenum.
The IPD Plenum delivers impressive horsepower gains of 25 and torque gains of 22 by means of a superior and more efficient design. These gains are mainly felt in the mid range where it is most needed and most enjoyed but performance improvements are realized throughout the entire rev range. Impressive Performance improvements like this will truly transform your Porsche driving experience.
These added power gains in the mid range create a more liner power curve helping to minimizing the dip in power typically experienced in the factory curve resulting in considerable performance improvements.
The 996 Plenum installation is a direct bolt on R & R (remove and reinstall) procedure. Installation is relatively straight forward for mechanically inclined DIY customers although IPD strongly recommends all Plenum installations be performed by a trained and qualified Porsche technician.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97174
The product you are viewing cross references to these numbers





- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05

Horsepower improvements range from 30 to 35 and boost response improves considerably making for longer, stronger and of course more pleasurable power curves. The IPD plenum develops horsepower throughout the entire power band, especially where it's needed most, from mid range to top end.
Installation of the 996 Turbo Plenum is very challenging and installation should only be performed by a seasoned and qualified Porsche technician.
The 996 Turbo 68mm version is designed to function with the factory 68mm throttle body that was O.E. on all 996 factory Turbos. The 68mm Plenum delivers similar power as the larger 74mm competition Plenum.
Horsepower gains range from 30 to 35 above the stock power band and initial boost response is improved. The IPD plenum delivers more power and more torque giving the 996 Turbo a stronger mid range and top end.
The 68mm Plenum version is perfect for the Turbo customer looking to improve engine performance on both stock and moderately modified Turbos developing under 700 horsepower.
The IPD 996 Turbo Plenum will truly transform the already impressive Turbo performance. The Plenum should be the first performance upgrade installed on any Turbo. They deliver great power gains on all Turbos whether they are bone stock or highly modified.
996 Turbo/GT2 Plenum: HP Gains 30-40 / Torque Gains 40-45. To be used with factory 68mm Thottle Body
Fits:
Porsche 996 Turbo/S/X50/ GT2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96268
The product you are viewing cross references to these numbers





- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
Horsepower improvements range from 30 to 35 and boost response improves considerably making for longer, stronger and of course more pleasurable power curves. The IPD plenum develops horsepower throughout the entire power band, especially where it's needed most, from mid range to top end.
Installation of the 996 Turbo Plenum is very challenging and installation should only be performed by a seasoned and qualified Porsche technician.
The 996 Turbo 74mm "Competition" Plenum is designed to function with more seriously modified Turbos developing over 600+ horsepower. Although this 74mm application has been used with great success on a variety of Turbos ranging from mildly modified to 1000+ HP.
This application requires the larger 74mm Porsche throttle body (additional purchase required) and comes with additional hardware to complete the kit. This "Competition Turbo" Plenum will help modified 996 Turbos realize maximum performance.
The increased air flow and air speed develop by the larger Plenum is designed to work with larger turbos, intercoolers, intake piping, high flow Y Pipes and more aggressive software.
Horsepower gains start around 35 hp and deliver max power slightly higher in the rev range creating better top end performance without the drop in power experienced with the factory air distributor.
996 Turbo Competition Plenum: HP Gains 24 / Torque Gains 26. Requires upgrading factory 68 mm TB with 996 Turbo 74 mm Thottle Body
Fits:
Porsche 996 Turbo/S/X50/ GT2
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96274
The product you are viewing cross references to these numbers





- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 997 Carrera 2 3.6L 2005>>
- Porsche 997 Carrera 2S 3.8L 2005>>
- Porsche 997 Carrera 4 3.6L 2005>>
- Porsche 997 Carrera 4S 3.8L 2005>>

Fits:
Porsche Porsche 996 Carrera C2 3.6L
Porsche Porsche 996 Carrera C4 3.6L
Porsche Porsche 996 Carrera C2 3.4L*
Porsche Porsche 996 Carrera C4 3.4L*
(*FOR CARS WITH "ELECTRONIC ACCELERATOR (M620)" NOT FOR EARLY CABLE THROTTLE CARS)
Porsche 997 3.8L S
Porsche 997 3.6L
Porsche has been controlling engine output by restricting the inlet track for decades. This has been successfully accomplished by utilizing smaller throttle bodies. This simple power control solution has been a very effective way of preventing lower level models from out performing certain flagship models, especially models with prolific racing pedigree. Although the factory engine packages are fantastic performance machines, they are engineered and developed to achieve specific performance numbers that satisfy a target demographic and compete with rival brands. Unfortunately driving enthusiasts who seek an elevated Porsche driving experience require performance levels well outside the target market.
All of the IPD Plenums deliver substantial power and torque gains, but when combined with larger throttle bodies they perform even better. All of the IPD "Competition" Plenums utilize the next largest size throttle body offered by Porsche. In this case, the Competition Carrera upgrades the factory OE 74mm throttle body with Porsche's 82mm 997 GT3 throttle body. All of our Competition Plenums are designed to perform with cars equipped with high performance exhaust systems. The more extensive the exhaust system (headers, kats and mufflers) the better. Optimizing air intake and exhaust together creates a balanced performance package that allows the engine to inhale and exhale more air thus creating more power and torque.
IPD has pioneered another new Plenum design with the Competition Carrera Plenum. Laminar flows and volumetric efficiencies have been further enhanced with our unique and innovative internal merge collector area. This completely new approach has yielded not only great performance gains but more linear power delivery and improved throttle response as well. Gains vary depending on pre-existing mods and quality of after-market exhaust installed. As we all "should" know, horsepower and torque become harder to find and typically more expensive as we climb the proverbial performance ladder. That being said, performance components yield different power gains depending on the order they were installed. IPD tests and evaluates all products on bone stock cars, this establishes a level playing field and a better "apples to apples" comparison. The Competition Carrera Plenum however is designed to work with applications that are already moderately to heavily modified. Power gains will vary with each Carrera, but the bottom line is, there will be noticeable and impressive gains that are sure to make any Porsche Carrera driving enthusiast smile.
Power improvements will be fully realized once the factory ECU/DME makes all the necessary "adaptation" requirements. This process can be expedited with a series of "hard pulls" or spirited full throttle acceleration runs through the gears. Of course this should only be performed on a closed course circuit.
Requires upgrading factory 74mm TB with 997 GT3 82mm Thottle Body
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
97182
The product you are viewing cross references to these numbers





- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04

The GT3 Porsches have their own branch on the Porsche motorsport family tree. GT3 street cars aren't a distant cousin sharing the same family name but are an immediate family member sharing the same DNA with Porsche's top level and most successful race cars. The 996 GT3 is considered by many to be the most performance focused Porsche to ever come out of Stuttgart.
As with all GT3's, power improvements are very difficult to develop because of Porsche's fantastic out-of-the-box design and development on these performance minded machines.
The GT3 engine was specifically developed to deliver power where it's needed on the track, way up high in the rev range. The IPD Plenum compliments that power by delivering additional horsepower throughout the entire power band, especially in the mid range where it's most needed.
The 996 GT3 IPD Plenum provides an additional 24 horsepower at the wheels, enhancing the already ultimate Porsche driving experience. The 996 GT3 Plenum is specifically designed to accommodate the larger 997 GT3 82mm throttle body (additional purchase required).
The combination of the patented Y design plenum and larger throttle body make the 996 GT3 IPD Plenum the ultimate performance upgrade for the ultimate performance Porsche.
Installation of the 996 GT3 IPD Plenum is relatively straight forward but IPD strongly recommends installation be performed by a highly qualified Porsche technician.
996 GT3 Competition Plenum: HP Gains 24 / Torque Gains 26. Requires upgrading factory 76mm Thottle Body with 997 GT3 82mm Thottle Body
Fits:
Porsche 996 GT3 2001 >>
**Not for early year cable driven throttle body cars
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96382
The product you are viewing cross references to these numbers





- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01

The 996 did not mark the beginning of a new Porsche chapter, it marked the beginning of a new Porsche book. The prolific 911 was baptized and emerged water cooled, leaving the legendary air cooled engine to live in Porsche history.
The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
Porsche introduced all 996 C2's with conventional cable throttles while all C4's were equipped with E-gas throttles. This was for the model year 98 in Europe and 99 in the US.
The IPD "Y" designed Cable plenum is a direct factory replacement of the OE "T" style air distributor. The IPD Plenum provides impressive max horsepower gains of 28 in the mid range and an additional 12 horsepower on top.
The IPD Plenum is the absolute single best modification that can be installed on these early under powered 996 Carreras and will transform your Porsche driving experience.
Installation is relatively easy and straight forward for mechanically inclined DIY customers although IPD strongly recommends having a qualified Porsche technician perform any IPD Plenum installation.
To confirm whether your Porsche is a Cable or E-gas throttle simply look at your throttle body for either a black electronic module (E-Gas) or a conventional spring / cable throttle control.
Fits:
Porsche 996 Carrera 2 3.4L 1998-99
Porsche 996 Carrera 4 3.4L 1998-99
(FOR EARLY CABLE THROTTLE CARS)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96074
The product you are viewing cross references to these numbers





- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005

The total and complete redesign of the 911 engine was fitted with the vintage plastic "T" style air distributor that Porsche has used since the early 911 days. This intake system was found on virtually all 911 Carrera's until the arrival of the DFI cars in 2009.
The unique, innovative and patented design of the IPD Plenum employs a "Y" design that improves performance by channeling air left and right to the cylinder banks more efficiently. This design reduces air flow turbulence and increases air flow velocity resulting in substantial power gains throughout the entire rpm band.
The IPD plenum not only delivers impressive power and torque increases but also creates a more linear power and torque band. Tiptronic customers even claim considerable improvements with more positive shifting after installing the IPD Plenums.
The 996 3.6L X51 package was typically found on the "40th Anniversary" limited edition cars (MY 2004) but could also be special ordered by performance minded customers. The X51 engine package increased horsepower from the standard 316 up to 345.
The X51 Carrera's came equipped with a variety performance upgrades, both internally and externally, that made the cars very desirable for Porsche drivers looking for something closer to the GT3 experience.
The X51 engine package was blessed with many wonderful internal performance upgrades but Porsche still utilized the factory air distributor opening the door for the IPD Plenum to provide even more additional power.
The 996 X51 IPD Plenum is designed to use all the pre-existing factory hardware and OE 74mm throttle body. The revolutionary design of the IPD "Y" style Intake Plenum increase horsepower by 24 and torque by 22 (at the wheels).
The X51 Plenum is a direct bolt on replacement and installation is relatively straight forward for mechanically inclined DIY customers although IPD strongly recommends all Plenum installations be performed by a trained and qualified Porsche technician.
Fits:
Porsche 996 X51 Upgrade cars 3.6L
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96174-X
The product you are viewing cross references to these numbers





- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
- Porsche 993 (911) C2 1994-97
- Porsche 993 (911) C4 1994-97
- Porsche 993 (911) RS 1994-97
- Porsche 993 (911) C2S 1994-97
- Porsche 993 (911) C4S 1994-97
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 GT3 MKI 1999-02
Sold as a pair

Fits:
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1998
Porsche 996 - 1997 to 2005
Introducing the Silverlake Porsche 911 GT3-style intake manifolds, designed for both ITB (Individual Throttle Bodies) or DBW (Drive-By-Wire) applications. These manifolds are compatible with air-cooled and water-cooled Porsche engines, offering a lightweight and high-performance alternative to the OEM cast aluminum version.
Available in two advanced materials: temperature-cured carbon fiber prepreg or glass fiber-reinforced thermoplastic, each plenum weighs just 825 grams (1.8 lbs), significantly lighter than the 2400 grams (5.3 lbs) of the stock aluminum version. This results in a total weight reduction of 3.15 kg (7 lbs) per pair — a 65% savings compared to the original.
Engineered and flow bench tested to ensure optimal airflow volume, the carbon fiber version features a matte finish, while the thermoplastic model comes painted in black, with the option for custom repainting. Both versions are free of logos, providing a clean, personalized look.
The kit includes two manifolds/plenums, the high-temperature silicone couplers are available separately.
This product replaces Porsche part 99611061996
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99611061996
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- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

In fuel injected engines, the throttle body is the part of the air intake system that controls the amount of air flowing into the engine, in response to driver accelerator pedal input in the main. The throttle body is usually located between the air filter box and the intake manifold, and it is usually attached to, or near, the mass airflow sensor.
The largest piece inside the throttle body is the throttle plate, which is a butterfly valve that regulates the airflow. Have a larger diameter throttle body produces more air flow with equals more power. The upgrades should be used in conjunction with the competition plenums.
This is a 74mm Throttle body.
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99760511502
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