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Engine Mounts

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DISPLAYING 1 to 14 (of 14 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Related, superseded, cross reference or alternative numbers for comparison.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
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Related, superseded, cross reference or alternative numbers for comparison.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
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

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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
96437504381/7
Product Information
Product 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:
  • 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.

Symptoms / Signs Of A Failing Or Worn Engine Mount:
  • 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.

Why This Upgrade Matters:
  • 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
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
Special Order item
99908421501
Product Information
Product Information
Engine mount nut. M12 x 1.5

porsche

Fits:
Porsche 993 Carrera

Porsche 996 Carrera
Porsche 996 TURBO / GT2 / GT3

Porsche 997.1 Carrera
Porsche 997.1 TURBO / GT2 / GT3

Porsche 997.2 TURBO / GT2 / GT3

Click 'Zoom in' for large parts diagram.
Diagram ref no 4

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99908421501
99908421501
99908421509

The product you are viewing cross references to these numbers
Special Order item
99350104
Product Information
Product Information
Engine Mount Panel.

Fits:
Porsche 964 1989 - 1994
Porsche 993 1994 - 1997

Diagram ref no 8

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Related, superseded, cross reference or alternative numbers for comparison.

99350104
96450104500
96450104500GRV
99350104500GRV
96450104600
96450104600GRV
99350104600GRV

The product you are viewing cross references to these numbers
6898
Product Information
Product Information
Engine stand for engine mount.

nordschleife

Fits:
Porsche 356
Porsche 911 912 F/G
Porsche 930
Porsche 914
Porsche 964
Porsche 993
Porsche 996 turbo/GT2/GT3
Porsche 997 turbo/GT2/GT3
The pickup tube is D=60mm in outer diameter

Reference numbers:
00072120100, 000.721.201.00, 000 721 201 00, P201

For the revision of your Porsche engine, we offer this engine mount. The flange surface with your cantilevers to the mounting axis allows a secure and at the same time easily accessible attachment of the engine to a rolling engine stand. Alternatively, you can use the engine mount to mount the engine to a workbench using a bearing block. We have the engine stands for all classic Porsches with and without a mounting stand in our program.

Notice: The colour of the part may differ from the colour shown.

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

6898
6898

The product you are viewing cross references to these numbers
M04
Product Information
Product Information
Rennline Engine Carrier Reinforcement Gusset Kit.

rennline

Fits:
Porsche 964 1989-94
Porsche 993 1995-98 All Except -92 Turbos

One of the only weak points on the 964 and 993 chassis is the engine carrier. When these models are tracked, or are fitted with stiffer than stock engine mounts, the engine carrier should be reinforced. If it is not, the carrier is known to bend, crack, or even break cleanly away from an engine mount in response to increased vibration and stress. The Porsche factory was aware of this problem and equipped its race cars with a reinforced engine carrier. Rennline now exclusively offers an engine mount reinforcement gusset kit that can be welded to the engine carrier by your workshop.

Related reference numbers
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M04
96411502190
99311502190
99311502141

The product you are viewing cross references to these numbers
M19
Product Information
Product Information
Rennline Tubular Engine Carrier.

rennline

Fits:
Porsche 964
Porsche 993

One of the only weak points on the 964 and 993 chassis is the engine carrier. When these models are tracked, or are fitted with stiffer than stock engine mounts, the engine carrier is known to bend, crack, or even break cleanly away from an engine mount in response to increased vibration and stress. The Porsche factory was aware of this problem and equipped its race cars with a reinforced engine carrier. Rennline now offers a tube frame replacement for your factory engine carrier that is proven to be much stronger, and can withhold the stresses of any track day, while offering a 1.4lb weight savings over a gusseted factory carrier. All parts manufactured on cnc equipment and meticulously tig welded, finished with a matte black powdercoat.

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

M19
96411502190
99311502190
99311502141

The product you are viewing cross references to these numbers
DISPLAYING 1 to 14 (of 14 products)
Also found on these pages
About Engine Mounts

Engine mounts, also called motor mounts, are critical components of your Porsche, securing the engine to the chassis and absorbing vibrations during operation. Traditionally, rubber has been the go-to material for these mounts, but polyurethane is gaining popularity due to its enhanced performance and durability compared to rubber.

Polyurethane motor mounts excel at absorbing vibrations, ensuring a smoother and quieter ride, benefiting both driver and passengers. Although they are initially more expensive than rubber mounts, their longer lifespan makes them more cost-effective over time, reducing maintenance and replacement expenses.

In high-performance vehicles like Porsches, motor mounts face extreme stress, vibrations, heat, and pressure. Uprated polyurethane motor mounts provide additional benefits by limiting engine movement, enhancing engine stability during acceleration and gear shifts, and offering improved gear engagement, thus protecting gearboxes and shafts.


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