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Engine Mounts

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DISPLAYING 1 to 16 (of 24 products)
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3609309625KIT
Product Information
Product Information
Performance engine mounts (PAIR). Included two M12 x 1.75 Nuts
Includes separate inserts for varying densities

Includes all 3 inserts for varying densities
Shore ratings 65A Street
Shore ratings 75A Fast Road (including in engine mounts)
Shore ratings 85A Track

Fits:
Porsche 964 C2 / C4 / RS / Turbo
Porsche 993 C2 / C4 / RS / Turbo
Porsche 996 C2, C4, C4S, Turbo, GT2, GT3
Porsche 997 C2, C2s, C4, C4s, Turbo, GT2, GT3

Replacing your factory engine mounts with these performance semi-solid mounts will dramatically decrease engine movement which then will result in better acceleration and handling of your Porsche.

CNC machined mounts with PU bushes are absolute must have for any car on track or on the street. Very easy to replace by experienced DIYers.

For 911 & Porsche world article / fitment guide pdf please CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3609309625KIT
993375049
99337504908
96437504381
99337504909
96537504900
96537505000
99637504991
99737504908
99737504907
997375049
996375049
3609309624
3609309625
3609309624

The product you are viewing cross references to these numbers
96437504381/1KIT
Product Information
Product Information
Engine mount set with hardware.
These have a rubber Shore rating of 75 and are for standard road use.

oematch

Fits:
Porsche 964 C2 / C4 1989-94
Porsche 993 C2 / C4 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 7.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504900
96437504901
96537505000
96437505000
96437505001
96537504900
90008203002
99902507402
90130531100
90007413402
99902513402
90038000909
90007413403

The product you are viewing cross references to these numbers
96437504381/2KIT
Product Information
Product Information
Engine mount set with hardware.
These have a HD rubber Shore rating of 75 and are for performance road and track use

oematch

Fits:
Porsche 964 Carrera
Porsche 993 Carrera


Click 'Zoom in' for large parts diagram.
Diagram ref no 7A

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381
96437504381
90008203002
99902507402
90130531100
90007413402
99902513402
90038000909
90007413403

The product you are viewing cross references to these numbers
3609309625
Product Information
Product Information
Performance engine mounts (PAIR). Included two M12 x 1.75 Nuts

rohler

Separate inserts available for varying densities
Shore ratings 65A Street (available separately)
Shore ratings 75A Fast Road (included in engine mounts)
Shore ratings 85A Track (available separately)

Fits:
Porsche 964 C2 / C4 / RS / Turbo
Porsche 993 C2 / C4 / RS / Turbo
Porsche 996 C2, C4, C4S, Turbo, GT2, GT3
Porsche 997 C2, C2s, C4, C4s, Turbo, GT2, GT3

Please note: the threads needs to be treated with loctite before installation (not sold with the product).

Replacing your factory engine mounts with these performance semi-solid mounts will dramatically decrease engine movement which then will result in better acceleration and handling of your Porsche.

CNC machined mounts with PU bushes are absolute must have for any car on track or on the street. Very easy to replace by experienced DIYers.

For 911 & Porsche world article / fitment guide pdf please CLICK HERE

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

3609309625
993375049
99337504908
96437504381
99337504909
96537504900
96537505000
99637504991
99737504908
99737504907
997375049
996375049
3609309624
3609309625
3609309624

The product you are viewing cross references to these numbers
M18
Product Information
Product Information
Tuneable Semi-Solid Engine Mount.
SET OF 2 Includes three pairs of inserts in varying densities

rennline 


Fits:
Porsche 964/993/996/997

The Rennline Tune-able Engine Mount for the 964, 993, 996, and 997 offers the ultimate in adjust ability for your car. Replacing your compliant factory mounts will decrease engine movement resulting in better acceleration, handling and significantly increased shifter feel. This is the ultimate solution for almost any car, and allows you to tune our mounts for the way you drive. Our mounts are CNC machined from billet aluminium and include three pairs of inserts in varying densities. Tune your mounts by using the softer inserts to reduce engine slop and avoid missed shifts in your street car, or utilise the stiffest inserts to get the most from a more focused track car. You can even mix and match, giving you 9 possible combinations to let you dial in our mount to your specifications. Here at Rennline we know you want your Porsche to be flawless, and that is why we are Driven to Improve Excellence.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

M18
993375049
99337504908
96437504381
99337504909
96537504900
96537505000
99637504991
99737504908
99737504907
997375049
996375049

The product you are viewing cross references to these numbers
M08
Product Information
Product Information
Rennline Solid Motor / Engine Mounts Pair. ALUMINIUM.
SET OF 2

rennline

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
Special Order item
99311502190
Product Information
Product Information
Engine mount carrier.

porsche

Fits:
Porsche 993 C2 / C4 1994-98
Porsche 993 Turbo 1995-98

Click 'Zoom in' for large parts diagram.
Diagram ref no 1

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Related, superseded, cross reference or alternative numbers for comparison.

99311502190
99311502190

The product you are viewing cross references to these numbers
964993MOUNTKIT
Product Information
Product Information
Engine mount fitting kit.  Fitting are for two engine mounts 


Fits:
Porsche 964 C2 / C4 1990-94 (use with RS style mounts)
Porsche 993 Carrera RS 1995-98
Porsche 964 C2 / C4 1990-94 (use with RS style mounts)
Porsche 993 Carrera RS 1995-98

Diagram Ref No 13, 14, 15 and 16.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

964993MOUNTKIT
90008203002
99902507402
90130531100
90007413402
99902513402
90038000909
90007413403

The product you are viewing cross references to these numbers
Special Order item
9653750
Product Information
Product Information
Engine Mounts.

 
porsche

Fits:
Porsche 964 C4 1989-93 Targa & Cabrio
Porsche 993 C2 Cabrio

Click picture for large parts diagram.
Diagram Ref No 7.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9653750
96537504900
96537505000

The product you are viewing cross references to these numbers
9653750
Product Information
Product Information
Engine Mounts.

 
oematch

Fits:
Porsche 964 C4 1989-93 Targa & Cabrio
Porsche 993 C2 Cabrio

Click picture for large parts diagram.
Diagram Ref No 7.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9653750
96537504900
96537505000

The product you are viewing cross references to these numbers
Special Order item
99337504909
Product Information
Product Information
Engine mount.

porsche

Fits:
Porsche 993 C2 (not Cabrio) 1994-98
Porsche 993 C4 1994-98
Porsche 993 TT 1994-98
Porsche 996 TT 2000-05

Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99337504909
99337504909
99337504905
99337504907

The product you are viewing cross references to these numbers
99337504909/1
Product Information
Product Information
Engine mount Part Number: 993 375 049 09 — this is a hydro-elastic (fluid-filled) engine mount, superseding older numbers like 993 375 049 05 and 993 375 049 07.  Fitment is side-specific (left or right), two are required per vehicle.

oematch

Fits:
  • Porsche 993 (911) C2 1994-97  (not Cabrio)
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) C2S 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 996 TURBO 2000-05
  • Porsche 996 GT2 2001-05  


Why Replace It, Engine mounts are crucial for:

  • Locating and supporting the engine
  • Absorbing vibration and engine torque under acceleration, braking, and cornering
  • When this mount deteriorates or fails, you can expect, Increased vibration transmitted to the cabin, steering, or pedals
  • Clunks, bangs, or loud noises during acceleration, deceleration, or gear changes from engine movement against the chassis
  • Visual signs such as leaking black fluid from the mount, sagging of tailpipes (due to dropped mounting), or visible damage to rubber or metal components 

Common Failure Causes

  • Age-related rubber degradation: over time, rubber hardens, cracks or de-bonds, causing loss of damping and allowing engine movement
  • Fluid leakage (hydraulic version): loss of damping fluid due to seal failure accelerates failure
  • Fluid contamination: oil, coolant, or other contaminants degrade the rubber material
  • Vehicle abuse or stress: aggressive driving, hard launches, or previous accidents can warp or break mounts
  • Worn or cracked brackets: even if the rubber is intact, the aluminium bracket can be damaged or corroded, reducing effectiveness 


Click 'Zoom in' for large parts diagram.
Diagram Ref No 2.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99337504909
99337504909
99337504905
99337504907

The product you are viewing cross references to these numbers
96437504381/1
Product Information
Product Information
Engine mount. Price is each should be purchased as a pair.
These have a rubber Shore rating of 65 and are for standard road use

Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these RS style, rubber bushed items.

2 Required per car

Diagram ref no 7A

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381
96437504381

The product you are viewing cross references to these numbers
96437504381/2
Product Information
Product Information
Upgraded engine mount. Price is each should be purchased as a pair.
These have a HD rubber Shore rating of 75 and are for performance road and track use.

oematch

Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these upgraded RS style, rubber bushed items.

2 Required per car

Click 'Zoom in' for large parts diagram.
Diagram ref no 7A

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Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381

The product you are viewing cross references to these numbers
96437504381/3
Product Information
Product Information
Uniball upgraded engine mount. Price is each should be purchased as a pair.

Fits:
Porsche 964 1989 to 1994
Porsche 993 1994 to 1998

Replace your worn, original engine mounts with these upgraded uniball items.
This performance upgrade reduces engine movement to enhance and improve performance.
Designed for track use.

2 Required per car

Diagram ref no 7A

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Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381

The product you are viewing cross references to these numbers
96437504381/6
Product Information
Product Information
Engine Mount HD RS Style Uni-Ball Centre.

Experience uncompromising drivetrain control with the HD RS-Style Engine Mount featuring a Uni-Ball Centre — the ultimate upgrade for high-performance Porsche 964 and 993 models.
Engineered for motorsport precision, this mount combines the robust RS-style housing with a spherical uni-ball bearing core, replacing the standard rubber insert. The result is near-zero flex or deflection under engine torque, ensuring sharper throttle response, improved gearshift accuracy, and stable engine alignment even under extreme load.
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 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

Diagram Ref No 7A

What This Product Does:
  • In a uniball (spherical bearing) design, the elastic rubber center is replaced (or augmented) with a metal bearing that allows rotation and articulation but eliminates flex / deflection.
  • This gives a much more direct mechanical interface—engine motion under load is significantly reduced compared to rubber alone.
  • Because the spherical joint has very low compliance, the mount becomes much more rigid in the direction of torque / twist (longitudinal / rotational direction) while still permitting the required articulation in other axes.
  • This variant is often preferred for track, clubsport, or dedicated performance cars where precision and rigidity matter more than comfort.

Symptoms Of Worn Or Failing Engine Mounts:
  • Excessive Engine Movement - When accelerating, decelerating, or cornering, you may notice the engine rocking or shifting more than normal.
  • Clunking or Knocking Noises - A distinct thud, clunk, or metal-on-metal noise when shifting gears or during abrupt acceleration/deceleration indicates the mounts are no longer isolating movement properly.
  • Vibration in the Cabin or Steering Wheel - As the mount deteriorates, it loses its ability to absorb vibration from the engine.
  • Poor Gearshift Precision - Engine movement causes slight misalignment in the drivetrain, which can result in imprecise or “notchy” gear changes.
  • Unstable Handling or Driveline Feel - Excessive engine movement shifts the vehicle’s center of gravity and can create a “loose” or unsettled feeling during hard cornering or braking.
  • Visible Wear or Fluid Leaks - The original Porsche mounts are hydraulic on many 964/993 models; when they leak fluid or collapse, engine support is compromised.
  • Rattling or Exhaust Misalignment - Worn mounts allow the engine to sit lower or twist, which can cause contact between the exhaust system and underbody components, leading to rattling or vibration noises.

Why This Upgrade Version Matters:
  • Maximum Rigidity / Minimal Deflection — virtually no unwanted movement, giving optimal drivetrain alignment and responsiveness.
  • Sharper Response & Consistency — throttle, shifts, and engine behavior are more direct because the engine is “locked down.”
  • Better Repeatability — especially in motorsport, lap after lap the behavior remains consistent.
  • High Load Handling — in high torque / high cornering environments, the mount retains its shape under stress.
  • Precision Feel — the driver senses a closer mechanical connection, improving control feedback.



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Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381

The product you are viewing cross references to these numbers
DISPLAYING 1 to 16 (of 24 products)
1 2
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About Engine Mounts

Replacement Engine Mounts – Stability, Comfort, and Performance for Porsche Models

Engine mounts are the unsung heroes of your Porsche’s drivetrain, securing the engine to the chassis while absorbing vibration and maintaining precise alignment. Over time, these components can degrade from constant heat, torque, and road stress — affecting ride quality, handling, and drivetrain performance.

At Design911, we supply a wide selection of precision-engineered replacement engine mounts designed to the highest performance standards. Manufactured from high-grade rubber, polyurethane, or reinforced composite materials, these mounts provide the perfect balance of vibration isolation and structural support.

Whether you’re restoring a classic air-cooled model or maintaining a modern 911, manufacturer-quality mounts ensure smooth operation, improved comfort, and precise drivetrain alignment under all conditions.

What Do Engine Mounts Do?

Engine mounts secure the engine and transmission to the vehicle’s chassis, minimising movement while isolating vibrations that would otherwise transfer into the cabin.

Core Functions:

  • Securely position the engine and transmission within the chassis.
  • Absorb vibration and torque movement, improving comfort and handling.
  • Maintain drivetrain alignment for optimal power transfer.
  • Reduce stress on components such as hoses, wiring, and exhaust connections.

Well-fitted engine mounts preserve your Porsche’s distinctive refinement and handling precision, especially under high load or spirited driving.

Why Do Engine Mounts Fail?

Due to constant exposure to torque, heat, and vibration, engine mounts naturally degrade over time. Worn or broken mounts can lead to excessive engine movement, clunking noises, and vibration inside the cabin — symptoms that should never be ignored.

Common Causes of Engine Mount Failure Include:

  • Material fatigue from age or repeated heat cycling.
  • Oil contamination, softening rubber or polymer components.
  • Excessive engine torque or vibration, especially on tuned or high-mileage engines.
  • Corrosion or cracking in metal brackets or hardware.
  • Improper installation leading to uneven stress and premature wear.

Failing mounts compromise performance and comfort, causing drivetrain misalignment and potential damage to surrounding components.

Why Replace with Precision-Engineered Engine Mounts?

Upgrading to high-quality replacement engine mounts restores the stability, refinement, and handling balance your Porsche was designed for. Precision-engineered mounts ensure reliable load distribution, vibration damping, and improved driving comfort.

Key Benefits:

  • Restores drivetrain stability and precise engine positioning.
  • Reduces vibration and harshness, improving cabin comfort.
  • Enhances throttle response by limiting engine movement.
  • Protects critical components from stress and misalignment.
  • Available in rubber or performance polyurethane for tailored ride feel.
  • Perfect fitment across Porsche models — air-cooled, turbocharged, or hybrid.

Whether you’re maintaining daily drivability or preparing for track use, replacement mounts deliver the durability and control your Porsche deserves.

Highlights:

  • Precision-engineered replacement engine mounts for all Porsche models.
  • High-grade rubber, polyurethane, or reinforced construction.
  • Improves handling, comfort, and vibration isolation.
  • Direct-fit compatibility for easy installation and perfect alignment.
  • Ideal for rebuilds, performance upgrades, or preventive maintenance.
  • Restores driving dynamics and comfort in classic and modern Porsches.


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