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Gearbox mount. Porsche 996 / 997 Rear (EXTENSION HOUSING) - 99637505505
99637505505/1
Vehicle Group
- 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 TURBO 2000-05
Information
Gearbox Mount, Rear (EXTENSION HOUSING).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99637505505
The product you are viewing cross references to these numbers
The OE Match Rear Gearbox Mount is a replacement transmission mounting component designed for the extension housing of Porsche 996 manual gearboxes.
Fits:- 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 TURBO 2000-05
The gearbox mount supports and locates the transmission within the vehicle while using its rubber-isolated construction to absorb vibration and driveline movement. It allows a controlled amount of movement while preventing the gearbox from shifting excessively under acceleration, braking, gear changes and changing engine loads.
A healthy gearbox mount is important for maintaining correct drivetrain alignment and preventing unwanted movement from being transmitted into the chassis. As the original rubber deteriorates with age, heat and repeated loading, the mount can soften, crack or separate, allowing excessive gearbox movement.
What This Product Does:
- Supports and locates the gearbox within the vehicle.
- Connects the transmission extension housing to its mounting structure.
- Controls excessive transmission movement under load.
- Absorbs vibration generated by the engine and drivetrain.
- Helps isolate drivetrain vibration from the vehicle body.
- Maintains more consistent drivetrain alignment.
- Reduces movement during acceleration and deceleration.
- Helps maintain a more precise feel during gear changes.
- Reduces stress on surrounding drivetrain components and mountings.
- Replaces an original mount that has softened, cracked or deteriorated.
The rubber section of the mount is designed to provide a balance between securely supporting the gearbox and isolating normal drivetrain vibration from the chassis.
Symptoms Of Wear Or Failure:
A deteriorated gearbox mount can allow the transmission to move more than intended. Possible symptoms include:
- Clunking or knocking during acceleration or deceleration.
- Excessive drivetrain movement when applying or releasing the throttle.
- Increased vibration through the cabin.
- Vibration through the gear lever.
- Movement of the gear lever as engine load changes.
- Harshness when pulling away.
- Increased noise during gear changes.
- A noticeable thump when changing gear.
- Reduced precision or consistency when shifting.
- Drivetrain vibration at certain engine speeds.
- Contact or rattling from nearby exhaust or drivetrain components.
- Visible cracking or splitting of the rubber mount.
- Rubber separating from the metal mounting sections.
- Sagging or distortion of the mount.
- Excessive gearbox movement when inspected.
These symptoms can also be caused by engine mounts, transmission components, suspension parts or other drivetrain issues, so the mounting system should be properly inspected before replacement.
Why Replacement Matters:
Gearbox mounts operate continuously under the weight and movement of the transmission while also dealing with torque reactions from the engine and drivetrain.
Over time, repeated loading, heat and ageing can cause the rubber element to harden, soften, crack or separate. Once the mount can no longer control gearbox movement effectively, the transmission may move excessively when engine torque is applied.
This can result in increased vibration, knocking noises and a less precise drivetrain feel.
Replacing a worn gearbox mount helps:
- Restore controlled gearbox movement.
- Reduce knocks and clunks from the drivetrain.
- Reduce unwanted vibration.
- Improve drivetrain stability.
- Maintain more consistent gearbox alignment.
- Improve gear-change feel.
- Reduce unnecessary movement of the gear lever.
- Protect surrounding mountings and drivetrain components.
- Restore the refinement expected from the vehicle.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99637505505
99637505505
99637505700
29845 01
29845
The product you are viewing cross references to these numbers
Price: £45.00
In stock
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Vehicle Group
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp) 01/2019>>
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp) 01/2020>>
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman GT4 3.8L 2015-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Information
Bolt for engine/gearbox mount support bracket. AM 10 x 55.
Fits:
Cars with 6-speed manual transmission
Porsche 981 Boxster 2012 - 2016
Porsche 981SP Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 982SP Boxster Spyder 2019>>
Porsche 981C Cayman 2013 - 2016
Porsche 981C Cayman GT4 2016
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Diagram ref no 6 (engine) or 2 (gearbox).
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
90037824901
The product you are viewing cross references to these numbers
Fits:
Cars with 6-speed manual transmission
Porsche 981 Boxster 2012 - 2016
Porsche 981SP Boxster Spyder 2016
Porsche 982 Boxster 2017>>
Porsche 982SP Boxster Spyder 2019>>
Porsche 981C Cayman 2013 - 2016
Porsche 981C Cayman GT4 2016
Porsche 982C Cayman 2017>>
Porsche 982C Cayman GT4 2019>>
Diagram ref no 6 (engine) or 2 (gearbox).
Related reference numbers
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90037824901
90037824901
The product you are viewing cross references to these numbers
Price: £3.25
Orderable
Vehicle Group
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
Information
Gearbox mount.
The Genuine Porsche OE Engine Mount 982399201A is a direct replacement for the standard (non-dynamic) engine mount on Porsche 718 Boxster and Cayman models. It offers the correct vibration isolation, stiffness, and durability to maintain smooth engine operation, comfortable ride quality, and proper powertrain alignment.
Sold each, Fits left and right
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4
An engine mount’s primary function is to secure the engine to the vehicle’s chassis while absorbing and isolating vibration and torque reaction forces. The 982399201A is tailored for standard (non-dynamic) mount applications, offering consistent support and comfort without the adaptive hydraulic elements found in dynamic mount systems. It maintains alignment between the engine and transmission, controls engine motion under acceleration and deceleration, and helps prevent excessive vibration transfer to the cabin.
Functions & Technical Role Engine support:
• Holds the engine securely in place within the chassis
• Vibration isolation: Reduces the transfer of engine noise and vibration into the cabin
• Torque reaction control: Helps manage engine movement during acceleration, deceleration and gear changes
• Correct OE stiffness: Engineered material durometer and geometry for non-dynamic mount applications
• Direct fit: Porsche-matched mounting points, bushings and hardware interface
Fitment / Position on Car:
• Installed on: Engine-to-chassis interface
• Location: One of the front or rear engine mounting points (per factory diagram — often one per side of crankcase on 718 models)
• Orientation: Mounts between cast engine bracket and chassis frame/bracket
Engine mounts are critical to both vehicle comfort and mechanical integrity. As rubber and bonding materials age, mounts can harden, crack, or break - leading to:
• Increased engine noise in the cabin
• Harsh vibration or shaking at idle
• Excessive engine movement under load
• Accelerated wear on adjacent components
Replacing worn mounts with a genuine Porsche OE mount like the 982399201A ensures the correct stiffness and isolation characteristics - avoiding the fitment issues, noise problems, and accelerated wear.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982399201A
The product you are viewing cross references to these numbers
The Genuine Porsche OE Engine Mount 982399201A is a direct replacement for the standard (non-dynamic) engine mount on Porsche 718 Boxster and Cayman models. It offers the correct vibration isolation, stiffness, and durability to maintain smooth engine operation, comfortable ride quality, and proper powertrain alignment.
Sold each, Fits left and right
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4
An engine mount’s primary function is to secure the engine to the vehicle’s chassis while absorbing and isolating vibration and torque reaction forces. The 982399201A is tailored for standard (non-dynamic) mount applications, offering consistent support and comfort without the adaptive hydraulic elements found in dynamic mount systems. It maintains alignment between the engine and transmission, controls engine motion under acceleration and deceleration, and helps prevent excessive vibration transfer to the cabin.
Functions & Technical Role Engine support:
• Holds the engine securely in place within the chassis
• Vibration isolation: Reduces the transfer of engine noise and vibration into the cabin
• Torque reaction control: Helps manage engine movement during acceleration, deceleration and gear changes
• Correct OE stiffness: Engineered material durometer and geometry for non-dynamic mount applications
• Direct fit: Porsche-matched mounting points, bushings and hardware interface
Fitment / Position on Car:
• Installed on: Engine-to-chassis interface
• Location: One of the front or rear engine mounting points (per factory diagram — often one per side of crankcase on 718 models)
• Orientation: Mounts between cast engine bracket and chassis frame/bracket
Engine mounts are critical to both vehicle comfort and mechanical integrity. As rubber and bonding materials age, mounts can harden, crack, or break - leading to:
• Increased engine noise in the cabin
• Harsh vibration or shaking at idle
• Excessive engine movement under load
• Accelerated wear on adjacent components
Replacing worn mounts with a genuine Porsche OE mount like the 982399201A ensures the correct stiffness and isolation characteristics - avoiding the fitment issues, noise problems, and accelerated wear.
Related reference numbers
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982399201A
982399201A
The product you are viewing cross references to these numbers
Price: £256.95
In stock
Vehicle Group
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
Information
Gearbox mount.
The LEMFÖRDER engine mount is a premium replacement motor mount engineered to meet Porsche OEM quality standards. Designed specifically for Porsche 718 Boxster and Cayman models that do not have the PR:140 Dynamic Engine Mount option, this mount supports the engine in the chassis while reducing vibration, noise, and harshness transmitted to the cabin.
Sold each, Fits left and right
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4
Engine mounts play a critical role in stabilising the engine and drivetrain, helping maintain alignment under acceleration, cornering, and braking. Over time, original mounts can wear, harden, or crack, leading to excessive engine movement, increased vibration, abnormal noise, and, in some cases, drivetrain stress. Replacing worn mounts with a quality LEMFÖRDER unit restores proper support, reduces unwanted vibration, and helps maintain smooth driving characteristics.
Manufactured by LEMFÖRDER, a respected supplier of suspension and powertrain mounting systems, this engine mount is constructed with robust materials and precision engineering for durability and long service life. It’s a direct fit for affected 718 models, offering reliable performance and peace of mind for everyday driving or spirited use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982399201A
The product you are viewing cross references to these numbers
The LEMFÖRDER engine mount is a premium replacement motor mount engineered to meet Porsche OEM quality standards. Designed specifically for Porsche 718 Boxster and Cayman models that do not have the PR:140 Dynamic Engine Mount option, this mount supports the engine in the chassis while reducing vibration, noise, and harshness transmitted to the cabin.
Sold each, Fits left and right
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4
Engine mounts play a critical role in stabilising the engine and drivetrain, helping maintain alignment under acceleration, cornering, and braking. Over time, original mounts can wear, harden, or crack, leading to excessive engine movement, increased vibration, abnormal noise, and, in some cases, drivetrain stress. Replacing worn mounts with a quality LEMFÖRDER unit restores proper support, reduces unwanted vibration, and helps maintain smooth driving characteristics.
Manufactured by LEMFÖRDER, a respected supplier of suspension and powertrain mounting systems, this engine mount is constructed with robust materials and precision engineering for durability and long service life. It’s a direct fit for affected 718 models, offering reliable performance and peace of mind for everyday driving or spirited use.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982399201A
982399201A
The product you are viewing cross references to these numbers
Price: £148.39
In stock
Vehicle Group
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
Information
Gearbox mount set.
This complete Genuine Porsche Gearbox Mount Kit includes two hydraulic gearbox mounts (982399201A) together with all required original mounting hardware for installation. The kit is designed to support the engine and transmission assembly on Porsche 718 Boxster and 718 Cayman (982) models without Dynamic Engine Mount
SET OF 2
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4, 5, 7 and 8
As genuine Porsche components, the mounts and hardware are manufactured to the same standards used in factory assembly, ensuring precise fitment, correct vibration isolation, and reliable drivetrain support.
This kit includes all OE components required for installation:
2 × Engine / Gearbox Hydraulic Mounts – 982399201A
4 × Hexagon head bolts BM8 × 50 – PAF008150
4 × Hexagon Nuts M8 – PAF003923
2 × Nuts M12 × 1,5 – 99908600902
These parts secure the gearbox mount assembly to the chassis and powertrain structure, ensuring a stable and vibration-controlled connection.
Gearbox mounts are critical structural components that secure the transmission and engine assembly to the vehicle chassis. They use rubber or hydraulic damping elements to absorb engine vibration and torque reactions while maintaining proper drivetrain alignment.
The 982399201A hydraulic mounts support the gearbox while reducing vibration and noise transmitted to the cabin, helping maintain smooth power delivery and comfortable driving characteristics.
This complete Genuine Porsche gearbox mount kit provides everything required to replace both mounts and their associated mounting hardware on the Porsche 718 Boxster and Cayman (982) models equipped with standard engine mounts. By replacing both mounts simultaneously, the kit helps restore proper drivetrain stability, reduce vibration, and maintain the precise handling characteristics expected from a Porsche sports car.
Over time, hydraulic mounts can degrade due to heat, load cycles, and drivetrain torque, leading to excessive movement or vibration. Worn mounts may cause:
• Increased cabin vibration or drivetrain noise
• Harsh shifting or drivetrain movement
• Reduced chassis stability during acceleration
• Premature wear on drivetrain components
Replacing worn mounts with genuine Porsche OE components restores factory ride quality, drivetrain alignment, and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982399201A
The product you are viewing cross references to these numbers
This complete Genuine Porsche Gearbox Mount Kit includes two hydraulic gearbox mounts (982399201A) together with all required original mounting hardware for installation. The kit is designed to support the engine and transmission assembly on Porsche 718 Boxster and 718 Cayman (982) models without Dynamic Engine Mount
SET OF 2
Fits:
Porsche 718 (982) Boxster 2.0L / 2.5L 2017>>
Porsche 718c (982C) Cayman 2.0L / 2.5L 2017>>
Diagram ref no 4, 5, 7 and 8
As genuine Porsche components, the mounts and hardware are manufactured to the same standards used in factory assembly, ensuring precise fitment, correct vibration isolation, and reliable drivetrain support.
This kit includes all OE components required for installation:
2 × Engine / Gearbox Hydraulic Mounts – 982399201A
4 × Hexagon head bolts BM8 × 50 – PAF008150
4 × Hexagon Nuts M8 – PAF003923
2 × Nuts M12 × 1,5 – 99908600902
These parts secure the gearbox mount assembly to the chassis and powertrain structure, ensuring a stable and vibration-controlled connection.
Gearbox mounts are critical structural components that secure the transmission and engine assembly to the vehicle chassis. They use rubber or hydraulic damping elements to absorb engine vibration and torque reactions while maintaining proper drivetrain alignment.
The 982399201A hydraulic mounts support the gearbox while reducing vibration and noise transmitted to the cabin, helping maintain smooth power delivery and comfortable driving characteristics.
This complete Genuine Porsche gearbox mount kit provides everything required to replace both mounts and their associated mounting hardware on the Porsche 718 Boxster and Cayman (982) models equipped with standard engine mounts. By replacing both mounts simultaneously, the kit helps restore proper drivetrain stability, reduce vibration, and maintain the precise handling characteristics expected from a Porsche sports car.
Over time, hydraulic mounts can degrade due to heat, load cycles, and drivetrain torque, leading to excessive movement or vibration. Worn mounts may cause:
• Increased cabin vibration or drivetrain noise
• Harsh shifting or drivetrain movement
• Reduced chassis stability during acceleration
• Premature wear on drivetrain components
Replacing worn mounts with genuine Porsche OE components restores factory ride quality, drivetrain alignment, and performance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982399201A
982399201A
The product you are viewing cross references to these numbers
About kit
This kit is comprised of the following items:
2 x Gearbox mounts (non-dynamic). Porsche 718 (982) Boxster / 718C (982C) Cayman (982399201A)
Unit Price: £256.95
InStock
4 x Hexagon head bolt BM8x50 (PAF008150)
Unit Price: £1.27
AvailableToOrder
4 x Hexagon Nut For Shock Absorber Top Mount. Porsche 986 Boxster / 987 Boxster / 987C Cayman / 996 / 997 (PAF003923)
Unit Price: £1.25
StockDue
2 x Nut M12x1,5 (99908600902)
Unit Price: £9.85
AvailableToOrder
Price: £543.68
Orderable