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E36 M3 Differential Mounts and Upgrades

E36 M3 Differential Mounts and Upgrades Rubber mounts are used to locate the differential to the subframe in RWD BMWs. This is one area that we like to focus on to improve power transfer, response time, and the overall feel of the drivetrain. By using a stiffer bushing you reduce or eliminate the 'wind up' and deflection of the stock rubber differential mounts when power is applied. A solid bushing will not twist when power (torque) is applied. Instead that power is directed to the drive wheels where it will do the most good. Our diff mount upgrades are solid rubber, Delrin, or aluminum kits depending on the application and the intended use. Even though these were developed for our race cars, we put them in a lot of street cars as well. The diff is not directly linked to the wheel and suspension so these are not as affected by bumps and road imperfections. Some additional drivetrain vibration may be felt through the chassis but in our experience it's very minimal. When installing one of our performance differentials make sure you also replace the mounts! And any subframe overhaul should also include solid diff mounts. There's no downside!
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IRP Performance Solid Engine and Transmission Mounts - E30 E36 E46

Stock mounts are made from soft rubber and are sometimes filled with fluid to give a car the most comfortable ride possible. The soft rubber and fluid helps to reduce the total amount of vibration, noise, and harshness (NVH) that is transferred into the cabin. The problem with this is driveline slop. The stock mounts allow a lot of excess movement and increases the amount of time it takes to transfer power to the wheels.

In order to address this issue, performance mounts can be substituted to reduce the amount of slop and transfer power to the wheel quicker. Two options for this are polyurethane mounts and solid mounts. 

The middle ground is Polyurethane. Polyurethane is much stiffer than rubber, but these still let a large amount of movement in comparison to solid mounts. These are great for sporty, aggressive street driving, but for the track are not ideal.

For the track, solid mounts are great. Solid mounts give you an immediate transfer of power, at the cost of increase NVH. This is great for the track where comfort is the least of your worries and power is all that is important.

Features:

  • Aluminum and Polyurethane Construction
  • 80A Durometer Rating
  • New Hardware
IRP - Individual Racing Parts
Part #: IRPEGS-1
Price: $182.95 (USD) 
Ships on Aug 24, 2018
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Rear Differential Mounts - Turner Solid - E36, E36 M3

Changing out the stock rubber differential bushings for Delrin and aluminum will result in more feedback and better suspension performance. This kit will also help prevent the front diff bolt from loosening or shearing - a very common problem on E36 cars.

The Turner Motorsport solid diff bushings have spent years being tested in various racing series and have even been used extensively on street cars. These bushings are CNC machined from high-grade billet aluminum and Delrin and are a direct replacement for the stock rubber pieces. The rear two differential cover bushings are slotted to allow for BMW manufacturing tolerances. The kit includes 3 pieces: a Delrin front mount and 2 aluminum rear mounts. A new front diff bolt is recommended - add it from the drop-down box below.

This does NOT fit large case Evo M3 differentials.

Clickhere for installation instructions.

This item fits the following BMWs:
1992-1998 E36 BMW 318i 318is 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
**NOTE:Not for Euro Spec M3's (3.2 liter)**

Turner Motorsport
Part #: TDR3680001
Price: $139.95 (USD) 
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Elring Differential Axle Seal - E30 E36 E28 E34 E24 E23 E32 Z3

Rubber seals are often hardened and damaged by excessive heat and constant temperature changes causing them to become brittle and crack or split. If your seal has split, replace it with a new Elring seal for long reliability and to prevent further problems.

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW engines:
E30 318i/is 325e 325i/ix M3
E36 318i/ic/is/ti 323i/is 325i/is 328i/is M3
E28 524td 528e 533i 535i
E34 525i 530i 535i
E24 633CSi 635CSi
E23 733i 735i
E32 735i/iL
Z3 1.9 2.5 2.5i 2.8 3.0i M Coupe/Roadster

Elring
Part #: 33107505602
Price: $7.49 (USD) 
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IRP Performance Polyurethane Engine and Transmission Mounts - E36 E46

Stock mounts are made from soft rubber and are sometimes filled with fluid to give a car the most comfortable ride possible. The soft rubber and fluid helps to reduce the total amount of vibration, noise, and harshness (NVH) that is transferred into the cabin. The problem with this is driveline slop. The stock mounts allow a lot of excess movement and increases the amount of time it takes to transfer power to the wheels.

In order to address this issue, performance mounts can be substituted to reduce the amount of slop and transfer power to the wheel quicker. Two options for this are polyurethane mounts and solid mounts.

Solid mounts are great for an immediate transfer of power but allow for a ton of noise and vibration to be felt and heard in the cabin of the vehicle. This is great for the track where there aren't any issues with excess harshness, but as a daily driver, this can become an annoying pain in the neck.

The best middle ground is Polyurethane. Polyurethane is much stiffer than rubber and gives you the much stiffer feel you may be looking for. This allows for the increase in responsiveness, but isn't so extreme that it transfers all of the sound and vibrations into the cabin. This makes it much more comfortable for daily use while still reinforcing your driveline.

Features:

  • Aluminum and Polyurethane Construction
  • 80A Durometer Rating
  • New Hardware
IRP - Individual Racing Parts
Part #: IRPEGS-2
Price: $199.95 (USD) 
Ships on Aug 6, 2018
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Rear Differential Mounts - Rubber - E36, E36 M3 A set of replacement rubber mounts for the differential on BMW E36 cars, 1992-1999. Includes the front rubber mount (#33171134871) and the two rear mounts (#33171134872) in the cover (press fit to your existing cover). A new front bolt (#33176760337) is strongly recommended.

A set includes -
1 x 33 17 1 134 871, front diff mount
2 x 33 17 1 134 872, rear diff mounts



These diff mounts fit the following BMWs:
1992-1998 E36 BMW 318i 318is 318ic 323is 323ic 325i 325is 325ic 328i 328is 328ic M3
Note: not for E36 M3 Euro.
Turner Motorsport
Part #: TMS338679
Price: $66.12 (USD) 
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Active Autowerke Differential Support Bracket - E36

The main mounting bolt for the differential in the E36 is susceptible to shearing off during extreme driving conditions. This can cause internal damage to your diff, leaving you stranded at the track or on the side of the road. Active Autowerke's differential support bracket eliminates this issue forever in under an hour installation.

This product fits the following BMWs:
1992-1999 E36 323i 325i 328i M3

Active Autowerke
Part #: 13-004
Price: $325.00 (USD) 
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E36 Performance Polyurethane Differential Bushing Set

Urethane mounts keep the differential from twisting under load. As torque is put through the driveline it causes anything to twist and move. The differential is mounted to the subframe and the twisting and deflection can be transferred to the rest of the chassis. With a stiffer mount the differential will not deflect as much. This improves seat-of-the-pants feeling to the driver, giving more feedback for smoother power delivery. In theory, there's also more torque being sent to the drive wheels since it's not being used up shifting the diff weight around.

These are tough 88A durometer urethane bushings with a anodized almunum center sleeve, engineered by ECS. This is a set of E36 diff bushings - 1 for the front and 2 for the rear cover. New high-grade hardware is included (the front bolt has a tendency to snap from all that torque twisting!).

ECS
Part #: 002447ECS01KT
Price: $111.95 (USD) 
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Genuine BMW Differential Axle Seal, Output Shaft - 33107505602

If your differential is leaking fluid, this is the likely cause. Restore the tight seal with this Genuine BMW seal to prevent potential damage or future failure.

 

Fits the following BMW Chassis:
E30, E36, E28, E34, E24, E23, E32, E38, Z3

Genuine BMW
Part #: 33107505602
Price: $11.62 (USD) 
$15.33 (24% off MSRP)
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