If you own an E9X M3, you know the S65 has a short list of things worth fixing before they fix you. Rod bearings get the headlines. The plastic VANOS covers are the quiet one.
The MMX Performance S65 VANOS covers replace those factory plastic parts with CNC-machined, black anodized aluminum. Plastic that has spent more than a decade next to a hot, high-revving V8 gets brittle. It cracks, it fatigues, and in the worst case it comes loose inside the engine. These covers take that failure off the table.
Why S65 VANOS Covers Fail
The factory covers sit over the VANOS springs in a hot, high-vibration spot. With age the plastic loses its flex and can crack, break apart or detach. BMW does not sell the covers separately, so the factory fix is replacing the entire VANOS unit. That is a big bill for a small plastic part.
Billet Aluminum Instead of Aging Plastic
MMX machines each cover from solid aluminum and finishes it in black anodizing for corrosion resistance. Each one is a direct replacement for the factory cover with the same full spring coverage, so the VANOS unit and surrounding hardware stay as BMW designed them. Designed and made in the UK.
Do These Fit Without Modification?
Yes. They are a direct fit for every S65-powered E9X M3 sold in the US: the E90 sedan, E92 coupe and E93 convertible. No cutting, no drilling, no VANOS rebuild.
What's Included
- MMX Performance S65 VANOS cover kit (part number MMR03-2001)
Key Features
- Replaces the failure-prone factory plastic VANOS covers on the BMW S65 V8
- CNC-machined billet aluminum construction
- Black anodized finish for corrosion resistance
- Direct OEM replacement with full spring coverage
- Snap-in installation, no special tools required
- Avoids replacing the entire VANOS unit
- Designed and made in the UK
Vehicle Fitment
Confirmed fitment for the BMW S65 4.0L V8:
- BMW E90 M3 Sedan (2008-2011): S65 4.0L V8
- BMW E92 M3 Coupe (2008-2013): S65 4.0L V8
- BMW E93 M3 Convertible (2008-2013): S65 4.0L V8
Installation Notes
MMX designed these covers to go in without removing the complete VANOS unit and without special tools. This is still work on the VANOS system, so if you are not comfortable there, have a shop that knows the S65 handle it.
- Let the engine cool completely and disconnect the battery.
- Gain access to the VANOS unit following the BMW service procedure for your M3.
- Remove the factory plastic covers. If any cover is cracked or broken, account for every missing fragment before going further.
- Snap each MMX cover into place over its spring and confirm it is fully seated.
- Reassemble, reconnect the battery, start the engine and check for VANOS-related fault codes.
