Powerflex Tunable Hybrid Urethane Engine Mounts - E36, E46, Z3, E9X M3

Why have only one engine mount? The Powerflex Tuneable "Hybrid" Urethane & Aluminum engine mounts for the E36, E46, and E90/E92 M3 are configurable to match your current car spec. It's "tuneable" to multiple performance settings -

- Street Performance with a dual-urethane core (65A and 80A bushings)

- Track Performance using stiffening pins inserted into the mount. The mount does not need to be removed to insert the pins, making this a tuneable mount from the paddock.

Also available is a full-race mount with a 95A black urethane core and stiffening pins. With the stiffest configuration the Powerlfex mount is a whopping 675% stiffer than a new M3 engine mount!

Other BMW urethane engine mounts are made with a single solid urethane block of one durometer. This is simple and cheap to manufacture but is not ideal for most scenarios - the mount is either too stiff or not stiff enough and poor manufactuing quality leads to continued problems. Powerflex properly engineered their mount to absorb vibrations while providing exceptional strength and sheer resistance. The design uses a "soft" Red 65A urethane to absorb Noise, Vibration, and Harshness (NVH) with a stiffer Purple 80A urethane for improved strength and performance. If you desire a stiffer mount for tracking or drifting the mount can be made stiffer without removing it from the car! Unsnap the yellow retaining collar and insert the four stiffening rods. This reduces deflection in the mount and makes it stronger.

Why would you want a stiffer engine mount? Mounts need to be stronger to withstand the higher stresses seen with hard driving or launching. Less deflection in the mount means a failure is less likely. The stock mounts are too soft for these types of driving and it's not uncommon for rubber mounts to break apart, mounting studs to shear off, and for the engine to move around and contact other parts (the radiator for example). Stiffer mounts help prevent these issues as well as giving better engine response, quicker power delivery, and more precise shifting (reducing the chances of a mis-shift). The beauty of the Powerflex tunebale mount is that it can be adapted for changing conditions, unlike other urethane or solid mounts which are either too stiff or not stiff enough.

These urethane/aluminum engine mounts are sold as a pair. They replace original BMW part numbers 22111095444, 22116779970, 22116771361, 11811092583, 11812283798, 11817837985, 11812228298, and 11811136542. Fits on all 6-cylinder E36 325i/328i/M3 and E46 323i/325i/328i/330i/M3 (not Xi AWD), and V8 E90/E92 M3.

How to Choose Powerflex Bushings & Durometer

Powerflex bushings are available in different polyurethane durometers to suit street, performance, track, and restoration applications. The correct bushing depends on how the vehicle is used and the amount of stiffness and chassis control desired.

What Do Powerflex Bushing Colors Mean?

Powerflex uses different colors to identify polyurethane hardness, measured on the Shore A durometer scale:

Red – 65A
Yellow – 70A
Purple – 80A
Black – 95A

A higher durometer generally means a stiffer bushing with less deflection. Powerflex engineers select the appropriate durometer for each specific bushing application to balance performance, durability, and driving characteristics.

Powerflex Road Series – Street & Performance

Powerflex Road Series bushings are designed for street and performance vehicles. They reduce unwanted suspension movement compared with standard rubber bushings, helping maintain suspension geometry and tire contact with the road.

Road Series bushings are a good choice for daily driven vehicles, spirited street driving, and performance builds where improved handling is desired without using Powerflex's stiffest track-focused compound.

Powerflex Black Series – Track & Motorsport

Powerflex Black Series bushings use Powerflex's stiffest polyurethane compound and are designed for track and motorsport applications where maximum chassis and suspension control is the priority.

The Black Series material can be up to 80% more resistant to load than standard rubber and approximately 25% stiffer than Powerflex's purple performance material.

Choose Black Series bushings for dedicated track cars, race cars, and performance builds where minimizing suspension deflection is more important than maintaining street-oriented comfort.

Powerflex Heritage Collection – Classic & Collector Cars

Powerflex Heritage Collection bushings provide the performance and durability benefits of polyurethane while maintaining a more original appearance.

They use the same premium polyurethane technology as the Powerflex Road Series but feature a dark grey finish designed to resemble traditional rubber bushings.

Heritage Collection bushings are ideal for classic, vintage, and collector vehicles where improved suspension performance is desired without changing the factory-style appearance.

Which Powerflex Bushings Should I Choose?

For most street and performance vehicles, Powerflex Road Series bushings provide a balance of improved handling and everyday usability.

For dedicated track or race vehicles, Powerflex Black Series bushings provide maximum stiffness and chassis control.

For classic or collector vehicles where maintaining an OEM-style appearance is important, Powerflex Heritage Collection bushings are the best fit.