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- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
Exhaust Turbocharger
Restore the exhilarating performance of your Porsche with
this Exhaust Turbocharger. Manufactured by BorgWarner, one of the
world's leading turbocharger manufacturers and a recognised Original Equipment
supplier, this premium-quality turbocharger delivers the performance,
efficiency and reliability expected from a Porsche 911 Turbo.
Fits:
- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
Diagram ref no 17 (cyl. 1-3) and 18 (cyl. 4-6)
Designed to operate under extreme temperatures and rotational speeds exceeding 200,000 RPM, the turbocharger is one of the most highly engineered components within the engine. BorgWarner's advanced manufacturing processes, precision-balanced rotating assemblies and high-temperature materials ensure rapid boost response, maximum efficiency and exceptional durability.
Whether you're replacing a worn turbocharger, repairing boost-related faults or restoring factory performance, this BW turbocharger provides OE-quality fitment and uncompromising performance.
What Does the Turbocharger Do?
The turbocharger increases engine performance by using exhaust gas energy to compress incoming air before it enters the engine.
This allows the engine to:
- Produce significantly more power and torque.
- Improve throttle response.
- Increase engine efficiency.
- Deliver strong acceleration throughout the rev range.
- Maintain performance at higher engine speeds.
- Improve combustion efficiency.
The Porsche 991 Turbo's twin-turbocharged flat-six relies on precision-engineered turbochargers to deliver its exceptional performance while maintaining everyday drivability.
Why Do Turbochargers Fail?
Although designed for long service life, turbochargers can
eventually wear or become damaged through:
- Bearing wear caused by high mileage.
- Oil contamination or insufficient lubrication.
- Foreign object damage.
- Excessive heat cycling.
- Oil seal deterioration.
- Carbon deposits restricting variable geometry mechanisms (where applicable).
- Overspeed caused by boost control faults.
Regular oil changes using Porsche-approved lubricants are essential for maximising turbocharger lifespan.
Symptoms of a Failing Turbocharger
Common warning signs include:
- Reduced engine power.
- Loss of boost pressure.
- Whining or siren-like noises.
- Excessive exhaust smoke.
- Oil consumption.
- Check engine light.
- Turbocharger fault codes.
- Poor acceleration.
- Boost pressure fluctuations.
Replacing a worn turbocharger restores the engine's original power delivery, efficiency and reliability.
When Should the Turbocharger Be Replaced?
Replacement is recommended when:
Bearing wear is identified. Oil seals begin leaking. Compressor or turbine wheel damage is found. Boost pressure cannot be maintained. Excessive shaft play develops. Turbocharger failure has occurred. Major engine repairs require replacement.Replacing the turbocharger promptly helps prevent debris entering the engine or exhaust system and avoids further costly repairs.
Why Choose a BorgWarner Turbocharger?
BorgWarner is one of the world's most respected manufacturers of high-performance turbocharging systems and an Original Equipment supplier to many leading vehicle manufacturers, including Porsche.
Benefits include:
OE-quality engineering. Precision-balanced rotating assembly. Excellent boost response. Outstanding durability. High-temperature resistant construction. Designed for factory performance levels. Direct replacement installation. Manufactured to exacting quality standards. Trusted by Porsche enthusiasts and professional workshops worldwide.Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9A112301
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Charge air cooler by Mahle for Porsche 957 and 958 Cayenne 3.0L Diesel models. It forms part of the turbocharged engine's charge-air cooling system, helping to reduce the temperature of compressed intake air before it enters the engine.
Fits
- Cayenne 957 3.0L Diesel 2007–10
- Cayenne 958 V6 3.0L Diesel (245Hp) 2010–17
What This Product Does
The charge air cooler transfers heat away from compressed intake air. Maintaining a sealed, undamaged cooler and associated pipework supports consistent charge-air flow through the intake system.
Functions
- Cools compressed intake air within the charge-air system.
- Provides a connection point for the relevant pressure hoses and pipes.
- Helps maintain a sealed route for turbocharged intake air.
Technical Details
- Charge air cooler reference 958145803A: left-hand side.
- Charge air cooler reference 958145804A: right-hand side.
- Shown for Cayenne 9PA1 (957) 3.0L Diesel 2007-10.
- Also shown for Cayenne 92A (958) 3.0L Diesel applications, including 2011-18 and 05/2014-18 diagram coverage.
- Related assembly components include pressure hoses, seal rings, hose clamps, retaining springs and pressure pipes.
Symptoms of Fault
- Hissing from the charge-air system.
- Loss of boost or reduced engine response under load.
- Underboost-related fault messages.
- Oil residue around the cooler connections or pipework.
- Visible damage, corrosion or distorted cooling fins.
Why Replacement Matters
A leaking or damaged charge air cooler can allow boosted air to escape and may affect intake-air temperature control. Replacing a faulty unit while checking its seals, hoses, clamps and retaining hardware helps address the complete charge-air connection.
FAQs
- Is this cooler side-specific?
Yes. Diagram reference 958145803A is left-hand, while 958145804A is right-hand. - Should related parts be inspected during replacement?
Inspect the pressure hoses, seal rings, clamps and retaining hardware for wear or damage. - How can a charge-air leak be confirmed?
A suitable pressure test of the charge-air system can help identify leaks in the cooler, hoses and connections.
Check fitment for your specific vehicle, including model, year and engine, before ordering.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95814580
The product you are viewing cross references to these numbers
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
- Porsche 955 Cayenne Turbo 4.5L 2003-06
- Porsche 955 Cayenne Turbo S 4.5L 2006>>
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
- Porsche 970.1 Panamera Turbo V8 4.8L 2009-13
- Porsche 970.1 Panamera Turbo S V8 4.8L 2009-13
- Porsche 970.2 Panamera Turbo V8 4.8L (520Hp) 2014-16
Fits:
Porsche 996 Turbo / GT2 2001-05
Porsche 997 Turbo / GT2 / GT2 RS 2007-11
Porsche 997 Turbo / Turbo S 2010-13
Porsche 955 Cayenne Turbo 4.5L V8 2003-06
Porsche 957 Cayenne Turbo 4.8L V8 2007-10
Porsche 958 Cayenne Turbo 4.8L 2011>>
Porsche 970 Panamera Turbo 4.8L 2011>>
Click 'Zoom in' for large parts diagram.
Diagram ref no 7
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660618000
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne Turbo / Turbo S 4.8L 2007-10
- Porsche 958 Cayenne Turbo V8 4.8L Petrol (500Hp) 2010-17
- Porsche 958 Cayenne Turbo S V8 4.8L Petrol (550Hp) 2010-17
This OE Match intercooler is a direct replacement for Porsche part, manufactured to original specifications, it ensures precise fitment and reliable performance within the turbocharged intake system. Installed at the front of the vehicle, the intercooler cools compressed air from the turbochargers before it enters the engine. By reducing intake air temperature, it improves combustion efficiency and supports optimal engine performance.
Fits:
Porsche 957 Cayenne Turbo 4.8L 2007 - 2010
Porsche 958 Cayenne Turbo 4.8L 2011 - 2018
Diagram ref no 1 (left) and 2 (right)
The intercooler lowers the temperature of compressed air from the turbochargers, increasing air density and improving engine efficiency. This results in better power output, improved throttle response, and enhanced reliability.
A properly functioning intercooler is essential for maintaining consistent turbo performance and preventing heat-related power loss.
Function
• Cools compressed intake air from turbochargers
• Improves combustion efficiency and engine performance
• Maintains stable intake air temperatures
• Supports consistent boost pressure and power delivery
This component is critical for performance and engine protection in turbocharged vehicles.
Over time, intercoolers can become clogged, corroded, or develop internal leaks, reducing their cooling efficiency. This can lead to higher intake temperatures, reduced performance, and increased engine stress.
Replacing a worn intercooler restores proper cooling, improves engine efficiency, and ensures reliable turbocharged performance.
When to replace:
• Loss of power or reduced turbo efficiency
• Boost leaks or hissing noises
• Oil contamination inside intercooler
• Visible external damage or corrosion
• Fault codes related to intake temperature or boost pressure
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9551106
The product you are viewing cross references to these numbers
- Porsche 957 Cayenne 3.0L Diesel 2007-10
- Porsche 958 Cayenne V6 3.0L Diesel (245Hp) 2010-17
Fits:
Porsche 957 Cayenne 3.0L DIESEL
Porsche 958 Cayenne 3.0L DIESEL
Diagram ref no 1 (LEFT) and 2 (RIGHT)
As genuine Porsche components, these charge air coolers are manufactured to exact OE specifications, providing perfect fitment, superior cooling efficiency and long-term reliability. Replacing a damaged or leaking intercooler can restore lost performance, improve throttle response and help prevent excessive engine temperatures associated with reduced charge-air cooling efficiency. Porsche identifies 958145803A as the left-hand charge air cooler, with the matching 958145804A serving the right-hand side on applicable Cayenne 958 diesel models.
Features:
- Genuine Porsche OE parts Part numbers: 958145803A (Left) & 958145804A (Right)
- Designed for Porsche Cayenne 958 3.0 Diesel models
Factory-engineered cooling performance
Direct replacement for original intercoolers
Restores efficient charge-air cooling
Helps maintain engine power and fuel efficiency - Factory-engineered cooling performance
- Direct replacement for original intercoolers
- Restores efficient charge-air cooling
- Helps maintain engine power and fuel efficiency
- Precision fit and OE-quality construction
- Designed for long service life and reliability
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
95814580
The product you are viewing cross references to these numbers