Powerflex Track-Series Tunable Engine Mounts - E36, E46, Z3, Z4M, E9X M3

We use the Black-Series version of these mounts exclusively on our B46 race cars. They are reliable where we have had other engine mounts tear open and while they come at a premium we have found nothing better for minimum NVH (which is still nice on a race car unless you hate yourself) while still keeping the engine solidly in place for many seasons.

On our street E46 powered by a B48 when the 430lb ft of torque hit on the dyno and the engine was on factory stock E46 non-M engine mounts it literally jumped nearly 2 inches out of the engine bay and started to tear the mount. Good times. 

And now in their words:

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