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Engine mounts

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DISPLAYING 1 to 10 (of 10 products)
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Related, superseded, cross reference or alternative numbers for comparison.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
96437504381/2KIT
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Related, superseded, cross reference or alternative numbers for comparison.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
Special Offer
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
Special Offer
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 Offer
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 Offer
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

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Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381

The product you are viewing cross references to these numbers
Special Offer
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
Special Offer
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.



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Related, superseded, cross reference or alternative numbers for comparison.

96437504381
96437504381

The product you are viewing cross references to these numbers
Special Offer
96437504381/5
Product Information
Product Information
Engine Mount HD RS Style, 75A Shore Rating.

Upgrade your Porsche’s powertrain stability with the HD RS Style Engine Mounts — precision-engineered replacements inspired by the legendary 964 and 993.
These high-performance mounts use 75A Shore durometer rubber, offering a significant increase in stiffness over standard or hydraulic mounts.
The result reduced drivetrain movement, crisper throttle and shift response, and more consistent handling under 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 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:
  • Support the engine / transmission assembly, holding it in position relative to the chassis.
  • Isolate vibration and noise, so that engine shake doesn’t overly transmit into the cabin.
  • Control motion under load, resisting twisting, torque, or movement during acceleration / braking / cornering.

Symptoms Of Failing / Weak Engine Mounts:
  • Excess engine movement or shift under acceleration or deceleration
  • Clunks, knocks, or bangs when shifting or when the engine “settles”
  • Increased vibration, especially at idle or low RPM in the cabin
  • Misalignment of driveline (axles, driveshaft, transmission) under load
  • Premature wear on exhaust, wiring, hoses — anything connected to the engine that gets stressed when it moves

Why Upgrade To HD RS 75A Mounts:
  • Sharper Throttle & Shift Response - Stiffer rubber minimizes drivetrain lag and flex.
  • Reduced Engine Twist - Keeps drivetrain geometry stable under load.
  • Improved Handling Balance - Less movement means more predictable chassis behavior.
  • Enhanced Durability - 75A compound resists collapse and fatigue over time.
  • Track-Tested Feedback - Ideal for RS conversions, spirited driving, or track use.



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

96437504381
96437504381

The product you are viewing cross references to these numbers
DISPLAYING 1 to 10 (of 10 products)
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About Engine mounts

Porsche Engine Mounts

Enhance your Porsche’s driving experience with the right engine mounts. At Design911, we supply standard replacement and performance-focused engine mounts for Porsche models, helping you balance refinement, control and durability for road, fast-road or motorsport use.

Why do Porsche Engine Mounts matter?

Engine mounts support and locate the engine in your Porsche while isolating vibration from the cabin. As they age, the rubber or other materials can soften, split or sag, allowing more movement than intended. This can lead to increased vibration, driveline clunks and a less precise, less refined feel from the car. Choosing suitable replacement or performance mounts helps keep the drivetrain controlled and the car feeling tight and well looked after.

  • Maintain correct engine position and support within the chassis
  • Help control vibration and harshness transmitted into the cabin
  • Reduce unwanted engine rock that can stress exhausts, hoses and joints
  • Allow you to tune the balance between comfort and a more direct, connected feel

Common options & kits

Individual replacement mounts
Specific engine mounts supplied individually so you can address a particular failed or tired mount without changing the entire set.

  • Useful when only one mount is clearly worn or damaged
  • Lets you focus on problem areas first
  • Can be combined with existing good mounts to spread work over time

Matched pairs or axle sets
Mounts supplied as pairs or sets intended to be replaced together, so left and right (or multiple) mounts are renewed at the same time.

  • Helps keep engine support and movement consistent side to side
  • Reduces the risk of one old mount accelerating wear in a new mount
  • A sensible approach when original mounts are of similar age

Performance and motorsport mounts
Uprated mounts designed to limit drivetrain movement more than standard parts, often using stiffer materials such as polyurethane or metal components.

  • Intended to reduce drivetrain wind-up and slack for a more direct feel
  • Can support fast-road or motorsport-focused Porsche builds
  • Typically increase noise and vibration compared with OE-style mounts, so choice should reflect how the car is used

Brands available in this category

For this category we stock a wide choice of trusted brands for Porsche models. You can also browse and filter by brand on this page to focus on your preferred manufacturers.

  • 9products – Precision-engineered Porsche performance parts including engine and transmission mounts, often aimed at club motorsport and track-day builds, using high-grade aluminium and motorsport hardware.
  • Demon Speed – Track-focused components for aggressive setups where owners want a more focused feel; suitable parts may increase noise and vibration so are best matched to performance-orientated cars.
  • Function First Performance – Known for drivetrain and shift-feel components, including engine mounts that target a tighter, more consistent response under load with careful attention to driver connection.
  • OE Match – OE-equivalent replacement parts aimed at maintaining original specification and reliability with sensible running costs, ideal where you want standard Porsche refinement.
  • Powerflex – Polyurethane solutions for related chassis and mounting areas, chosen when owners want more consistent geometry and control than ageing rubber, with compounds to suit road or track bias.

When should you review or replace your Porsche engine mounts?

Checking Porsche engine mounts periodically helps you catch age- or use-related deterioration before it affects refinement or starts to stress other components. Mounts work hard under acceleration, braking and gear changes, so wear is common on older or heavily used cars.

  • You notice excess vibration at idle, especially compared with how the car previously felt
  • There are clunks or thumps on take-up of drive or during gear changes
  • The exhaust or other components can be felt or heard knocking under load
  • Visual inspection shows sagging, perished or split rubber in one or more mounts
  • You are carrying out engine-out work, restoration or performance upgrades and want a fresh baseline

If any of these apply, it is a good time to review your engine mounts and replace anything that is past its best so your Porsche stays dependable and enjoyable to drive.

Explore Porsche engine mounts with Design911

Browse engine mounts for Porsche at Design911 – from OE-style replacements to uprated and motorsport-orientated options – and find solutions suited to daily road use, fast-road upgrades and full track projects. Our team can help you select parts matched to your model, year and intended use so you strike the right balance between comfort, control and durability.

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