Original BMW Valve Cover with Studs for S54 Engine, BMW E46 M3 (2001–2006), Z3 M (2001–2002), and Z4 M (2006–2008)

Covering the valvetrain on the S54 engine, this Original BMW cylinder head cover seals the top of the cylinder head on the 2001–2006 BMW E46 M3, the 2001–2002 Z3 M Coupe and M Roadster, and the 2006–2008 Z4 M Coupe and M Roadster. It weighs 2.9 kg (6.3 lb) and comes with four studs, two of number 07-12-9-901-923 and two of 07-12-9-901-921. A valve cover keeps oil inside the top of the engine and keeps dirt and debris away from the valves and the parts that operate them. For the most part it lasts the life of the engine.

Original BMW Parts carry a 24-month parts warranty.

BMW has produced this number since January 2007 and marks it as exchangeable retrospectively, replacing earlier number 11-12-7-832-941. That is why a cover made from 2007 onward fits Z3 M cars built in 2001 and 2002. The part also cross-references to 11-12-7-830-438 and 11-12-7-831-313. BMW calls it the cylinder head cover, while most owners know it as the valve cover or rocker cover.

Technical Details

• Manufacturer: BMW, supplied as an Original BMW part
• Part number: 11-12-7-838-754
• BMW part name: cylinder head cover
• Engine: S54
• Weight: 2.9 kg (6.3 lb)
• Includes: four studs (two 07-12-9-901-923 and two 07-12-9-901-921)
• Production start: January 2007
• Replaces: 11-12-7-832-941, exchangeable retrospectively
• Made in Slovenia
• Sold as: one cover
• Warranty: 24 months on Original BMW Parts

Installation & Tuning Notes

Improper installation is a known cause of valve cover trouble, specifically uneven torque or poor gasket placement. High engine temperatures can fatigue a cover until it warps or cracks, and a blocked PCV valve can build crankcase pressure that damages it. Gaskets also harden and crack with age, which leads to oil leaks and odors from the engine.

Common Questions

When does a valve cover need replacing?
With age a cover can crack or warp, which opens vacuum leaks that show up as performance problems. A damaged cover has to be replaced.

Does it fit the E46 M3 convertible?
Yes. BMW's parts data shows this cover for the E46 M3 in both coupe and convertible form.

Where is this cover made?
It is made in Slovenia.

Talk to PMB about the rest of your S54 top-end parts.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.