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Engine Mount HD RS Style, 65A Shore Rating. Porsche 964 / 993 - 96437504381
96437504381/7
Vehicle Group
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 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 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Information
Engine Mount HD RS Style, 65A Shore Rating.
Upgrade your Porsche’s performance and stability with this RS-style Heavy-Duty Engine Mount. Designed as a direct replacement for standard mounts, it features a 65A Shore-rated rubber compound that delivers the perfect balance between comfort and precision.
Sold Each.
x2 Required Per Car.
Fits:
Diagram Ref No 7A
What This Product Does:
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96437504381
The product you are viewing cross references to these numbers
Upgrade your Porsche’s performance and stability with this RS-style Heavy-Duty Engine Mount. Designed as a direct replacement for standard mounts, it features a 65A Shore-rated rubber compound that delivers the perfect balance between comfort and precision.
Sold Each.
x2 Required Per Car.
Fits:
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 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 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 1994-97
Diagram Ref No 7A
What This Product Does:
- This is a high-density (HD) rubber engine mount in the RS / sport style, intended as an upgraded or stronger replacement to the standard mounts offered on Porsche 964 / 993 models.
- The “65A Shore rating” refers to the hardness (stiffness) of the rubber material. A Shore A of 65 gives a balance: firmer than the softest mounts, but not excessively rigid, aiming to deliver improved engine control without too much harshness.
- It is often used as a pair (one on each side of the engine) to replace worn or softer factory mounts.
- The RS style mount replaces or upgrades from the factory hydraulic or softer mounts.
- In practice, what it does: it helps secure the engine more rigidly to the chassis, reducing unwanted engine movement (twist, yaw, vibration) under load (acceleration, cornering, braking). It helps maintain drivetrain geometry, gives crisper throttle response, and improves shift feel.
- Excessive Engine Movement / “Engine Rocking” - The engine may shift or rock under throttle or when revving, particularly during hard acceleration, deceleration, or rapid load change.
- Clunks or Thuds / Transmission “Bump” During Engagement - When shifting gears, especially from neutral into drive or reverse, or when applying throttle from idle, the drivetrain may “bump” or thud due to slack from the worn mount.
- Misalignment / Drivetrain Strain - Because mounts help maintain alignment between engine, gearbox, and driveshafts, a failing mount can cause misalignment, leading to extra stress on coupling joints, CVs, or mount brackets.
- Increased Vibration or Harshness - You may feel more vibration through the cabin, floor, or pedals, especially under load.
- Noise - Metallic rattles or clunks if the engine is loose enough to hit against brackets or the chassis.
- Rubber Deterioration / Visible Damage - Cracks, splits, or separation in the rubber portion of the mount.
- Upgrading to the RS-Style Engine Mounts (65A Shore Rating) transforms how your Porsche feels on the road. Standard factory mounts are designed for comfort, but over time they soften and allow excessive engine movement, which dulls throttle response and gear changes. The RS-spec design uses a firmer 65A rubber compound, originally developed for Porsche’s Rennsport (RS) models, to deliver sharper, more connected driving dynamics without adding harshness.
- With these mounts installed, your engine and gearbox stay properly aligned, improving stability under acceleration, cornering, and braking. You’ll experience crisper shifting, reduced vibration, and improved handling precision, especially during spirited or track driving.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96437504381
96437504381
The product you are viewing cross references to these numbers
Price: €151.56
In stock
Related products
Vehicle Group
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Turbo 2010-13
Information
Engine Mount Carrier.
Fits:
Porsche 996 Turbo/GT2 2000-05
Porsche 996 GT3 2000-05
Porsche 997 Turbo/GT2 2007-2013
Porsche 997 GT3 2007-09
This product supersedes Porsche's old part numbers:
- 99637501300
Click picture for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99637501301
The product you are viewing cross references to these numbers
Fits:
Porsche 996 Turbo/GT2 2000-05
Porsche 996 GT3 2000-05
Porsche 997 Turbo/GT2 2007-2013
Porsche 997 GT3 2007-09
This product supersedes Porsche's old part numbers:
- 99637501300
Click picture for large parts diagram.
Diagram Ref No 1.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99637501301
99637501301
99637501300
The product you are viewing cross references to these numbers
Price: €634.84
Orderable
Vehicle Group
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
Information
Engine mount.
This Porsche Genuine OE Engine Mount (Part No. 99737504908) is a factory-engineered hydraulic engine mount designed to secure the engine assembly to the chassis of Porsche 911 (997) models. Manufactured to Porsche’s strict original equipment standards, this mount ensures the correct balance of structural support and vibration isolation required for Porsche’s high-performance flat-six engines.
Sold each, 2 required per vehicle.
Fits:
Porsche 997.1 Carrera 2005 - 2008 COUPE
Porsche 997.1 Turbo 2007 - 2009 COUPE
Porsche 997.2 Carrera 2009 - 2012 COUPE
Porsche 997.2 Turbo 2010 - 2013 COUPE without PADM (dynamic engine mounts)
Diagram Ref No 2.
This mount is supplied as a single unit (sold individually) and is suitable for both left and right sides of the engine mounting assembly. Two mounts are typically required per vehicle.
Old Porsche part numbers: 99737504904, 99737504906
The engine mount forms the connection between the engine block and the vehicle chassis. Its hydraulic internal structure absorbs engine vibrations while maintaining proper drivetrain alignment.
By controlling engine movement during acceleration, braking, and cornering, the mount helps maintain smooth engine operation, stable handling, and reduced vibration inside the cabin. Hydraulic mounts are specifically designed to dampen engine oscillations and road shock, contributing to the refined driving characteristics expected from a Porsche sports car.
Functions & Technical Role
• Engine support: Secures the engine assembly to the chassis structure
• Hydraulic vibration damping: Reduces noise, vibration, and harshness (NVH)
• Powertrain stability: Limits excessive engine movement during driving loads
• Alignment control: Maintains correct engine and transmission positioning
• OEM precision fit: Designed to Porsche factory geometry and mounting specifications
Fitment / Position on Car
• Fitting position: Engine mounting assembly
• Location: Between the engine bracket and rear subframe/chassis mount
• Orientation: Fits left or right side of the engine (two mounts per vehicle)
Engine mounts are subjected to constant stress from engine torque, heat, and vibration. Over time, the rubber and hydraulic elements can deteriorate, leading to:
• Increased engine vibration or noise in the cabin
• Excessive engine movement during acceleration
• Harsh drivetrain behaviour or reduced ride comfort
• Premature wear of surrounding drivetrain components
Replacing worn mounts with genuine Porsche OE components restores the original balance of comfort and performance designed for the 997 platform.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737504908
The product you are viewing cross references to these numbers
This Porsche Genuine OE Engine Mount (Part No. 99737504908) is a factory-engineered hydraulic engine mount designed to secure the engine assembly to the chassis of Porsche 911 (997) models. Manufactured to Porsche’s strict original equipment standards, this mount ensures the correct balance of structural support and vibration isolation required for Porsche’s high-performance flat-six engines.
Sold each, 2 required per vehicle.
Fits:
Porsche 997.1 Carrera 2005 - 2008 COUPE
Porsche 997.1 Turbo 2007 - 2009 COUPE
Porsche 997.2 Carrera 2009 - 2012 COUPE
Porsche 997.2 Turbo 2010 - 2013 COUPE without PADM (dynamic engine mounts)
Diagram Ref No 2.
This mount is supplied as a single unit (sold individually) and is suitable for both left and right sides of the engine mounting assembly. Two mounts are typically required per vehicle.
Old Porsche part numbers: 99737504904, 99737504906
The engine mount forms the connection between the engine block and the vehicle chassis. Its hydraulic internal structure absorbs engine vibrations while maintaining proper drivetrain alignment.
By controlling engine movement during acceleration, braking, and cornering, the mount helps maintain smooth engine operation, stable handling, and reduced vibration inside the cabin. Hydraulic mounts are specifically designed to dampen engine oscillations and road shock, contributing to the refined driving characteristics expected from a Porsche sports car.
Functions & Technical Role
• Engine support: Secures the engine assembly to the chassis structure
• Hydraulic vibration damping: Reduces noise, vibration, and harshness (NVH)
• Powertrain stability: Limits excessive engine movement during driving loads
• Alignment control: Maintains correct engine and transmission positioning
• OEM precision fit: Designed to Porsche factory geometry and mounting specifications
Fitment / Position on Car
• Fitting position: Engine mounting assembly
• Location: Between the engine bracket and rear subframe/chassis mount
• Orientation: Fits left or right side of the engine (two mounts per vehicle)
Engine mounts are subjected to constant stress from engine torque, heat, and vibration. Over time, the rubber and hydraulic elements can deteriorate, leading to:
• Increased engine vibration or noise in the cabin
• Excessive engine movement during acceleration
• Harsh drivetrain behaviour or reduced ride comfort
• Premature wear of surrounding drivetrain components
Replacing worn mounts with genuine Porsche OE components restores the original balance of comfort and performance designed for the 997 platform.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99737504908
99737504904
99737504906
99737504908
The product you are viewing cross references to these numbers
Price: €495.93
Orderable
Vehicle Group
- 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 964 (911) TURBO 3.3L 1991-93
- Porsche 964 (911) TURBO 3.6L 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 993 (911) TURBO 1994-96
- Porsche 993 (911) GT2 1994-97
- Porsche 993 (911) TURBO S 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 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
- Porsche 996 GT3 MKII 2003>>
- Porsche 996 GT3 RS 2003-04
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
Information
Rennline Solid Motor / Engine Mounts Pair. ALUMINIUM.
SET OF 2
Fits:
Porsche 964
Porsche 993
Porsche 996
Porsche 997
Solid engine mounts are a smart upgrade to any track or aggressive street car, and were installed on Porsche factory race cars. Stock mounts are made of compliant rubber, and contribute to imprecise shifting and inferior throttle response. Solid mounts create slightly more interior vibration than rubber mounts, but securely connect the engine and transmission assembly to the car's unibody, creating a crisper throttle response and shifter feel. Rennline's solid mounts are CNC machined from 6061 aluminum for strength and light weight, and come as a pair with new Grade 8 mounting hardware. Sold as a set of (2)
Motorsport Product
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
M08
The product you are viewing cross references to these numbers
SET OF 2
Fits:
Porsche 964
Porsche 993
Porsche 996
Porsche 997
Solid engine mounts are a smart upgrade to any track or aggressive street car, and were installed on Porsche factory race cars. Stock mounts are made of compliant rubber, and contribute to imprecise shifting and inferior throttle response. Solid mounts create slightly more interior vibration than rubber mounts, but securely connect the engine and transmission assembly to the car's unibody, creating a crisper throttle response and shifter feel. Rennline's solid mounts are CNC machined from 6061 aluminum for strength and light weight, and come as a pair with new Grade 8 mounting hardware. Sold as a set of (2)
Motorsport Product
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
M08
993375049
99337504908
96437504381
99337504909
96537504900
96537505000
99637504991
99737504908
99737504907
997375049
996375049
The product you are viewing cross references to these numbers
Price: €441.49
Orderable