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Engine Mounts
By OE Match
- 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
This OE Match engine mount kit provides a complete replacement solution for the engine mounting system on Porsche 911 (996) Carrera 2, Carrera 4 and Carrera 4S models. The kit includes two OE Match hydraulic engine mounts along with the correct genuine Porsche bolts and locknuts required for secure installation.
SET OF 2, with bolts and nuts.
Fits:
Porsche 996 C2 / C4 3.4L 1997 - 08/2001
Porsche 996 C2 / C4 3.6L 09/2001 - 2005
Porsche 996 C4S 3.6L 09/2001- 2005
Diagram ref no 2.
Kit Includes
2 × OE Match Engine Mount – 99337504908
4 × Genuine Porsche Hexagon Bolt – 90037805501
2 × Genuine Porsche Locknut M12 x 1.5 – 99908421501
Replacing both mounts together ensures balanced engine support and restores the original vibration-damping characteristics of the drivetrain.
The engine mounts stabilise the engine and isolate vibration from the vehicle body. They maintain the correct engine position during acceleration, braking and cornering, helping ensure smooth power delivery and reducing noise or vibration transmitted to the cabin.
Replacing worn mounts restores drivetrain stability and improves driving comfort.
Function
• Engine Support: Secures the engine to the chassis structure
• Vibration Isolation: Hydraulic mount design absorbs engine vibration and noise
• Drivetrain Stability: Maintains correct engine alignment under load
• Component Protection: Reduces stress on transmission, exhaust and drivetrain components
Over time, engine mounts can deteriorate due to heat, vibration and repeated load cycles. When the hydraulic damping material weakens or leaks, excessive engine movement can occur. This often results in increased cabin vibration, knocking noises during gear changes or visible sagging of drivetrain components.
Replacing the mounts with a matched pair restores proper engine support and ensures smooth, stable operation of the drivetrain.
Replace the engine mount kit if you notice:
• Excessive vibration in the cabin or steering wheel
• Clunking during acceleration or gear changes
• Engine movement when revving the engine
• Visible fluid leakage or cracked mount rubber
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99337504908
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
This OE Match engine mount is a hydraulic engine mounting component designed for Porsche 911 (996) models. Manufactured to match the original Porsche specifications, it provides secure engine support while reducing vibration transmitted to the chassis. This mount is a direct-fit replacement for the factory engine mount used in the 996 drivetrain system.
Sold individually, two are required per vehicle.
Fits:
Porsche 996 C2 / C4 3.4L 1997 - 08/2001
Porsche 996 C2 / C4 3.6L 09/2001 - 2005
Porsche 996 C4S 3.6L 09/2001- 2005
Diagram ref no 2.
This mount replicates the original Porsche design to ensure proper fitment, durability and vibration damping. It replaces earlier versions such as 99337504905 and 99337504906, offering improved reliability and performance.
The engine mount stabilizes the engine and limits excessive movement during acceleration, braking and cornering. By absorbing vibration and engine torque, it helps maintain smooth driving characteristics and reduces noise or vibration transmitted to the cabin.
Replacing worn mounts restores drivetrain stability and helps protect surrounding components such as the exhaust system, transmission and driveshaft.
Function
• Engine Support: Secures the engine to the chassis or engine cradle
• Vibration Isolation: Hydraulic mount design absorbs engine vibration
• Drivetrain Stability: Controls engine movement under load
• Noise Reduction: Minimizes vibration transmitted to the cabin
Engine mounts are subjected to constant vibration, engine torque and heat. Over time the rubber and hydraulic components can degrade, reducing their ability to absorb movement. This may result in increased cabin vibration, clunking noises during gear changes, or visible engine movement. Replacing worn mounts restores proper engine support and ensures stable drivetrain operation.
Consider replacing the engine mount if you notice:
• Excessive engine vibration inside the cabin
• Clunking or knocking during acceleration or gear changes
• Visible hydraulic fluid leakage from the mount
• Sagging exhaust or engine position changes
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99337504908
The product you are viewing cross references to these numbers
OEMatch Engine Mounts — Durability, Sealing, Performance
Engine mounts secure the engine to the chassis while damping vibration and maintaining drivetrain alignment. For Porsche models, OEMatch Engine Mounts are selected to restore stability and reduce transmitted vibration, helping to preserve handling precision and protect connected components during everyday and spirited use.
Available Types
- High-grade rubber engine mounts
- Performance polyurethane mounts
- Reinforced composite mounts
- Hydraulic or fluid-filled mounts where specified by model
Understanding OEMatch Engine Mounts
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original engine mounts.
OE (Original Equipment) refers to parts matching original specifications for the engine mounts and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM engine mounts engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models.
Engine mounts hold the engine and transmission in the correct position while isolating vibration from the cabin and drivetrain. Different constructions balance isolation and control: rubber absorbs vibration, polyurethane can offer firmer control, and reinforced composites aim to combine strength with damping. OEMatch focuses on engine-mount items selected for Porsche applications to support correct fit and function.
Benefits Include
- Restores drivetrain stability and precise engine positioning
- Reduces vibration and harshness for improved cabin comfort
- Protects hoses, wiring and exhaust connections from excess movement
Why Engine Mounts Wear and Fail
- Material fatigue from repeated heat cycling and age
- Oil or fluid contamination that softens rubber or polymer parts
- Excessive engine torque or vibration, especially on modified or high-mileage engines
- Corrosion or cracking in metal brackets and mounting hardware
The Importance of Replacing with OEMatch Engine Mounts
Replacing worn engine mounts maintains accurate engine positioning and reduces secondary stresses that can accelerate wear on hoses, wiring, exhaust connections and transmission mounts. Timely renewal helps preserve the handling balance and refinement expected from a Porsche and avoids secondary repairs caused by excessive engine movement.
Advantages
- Direct-fit replacements engineered to match original dimensions and tolerances
- Made to original-spec dimensions for consistent performance
- Compatible with factory systems and sensors where required by model
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Intermediate shaft (IMS)
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Oil System Parts
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Fuel System Parts
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Gaskets & Sets
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Radial Seal / RMS / Camshaft / Balance shaft
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Connecting Rod
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Vacuum Pump
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