Original BMW Valve Cover (Cylinder Head Cover) for BMW 323i, 328i, M3, 528i, and Z3 (1996–2000)

Sitting on top of the cylinder head, this Original BMW valve cover encloses the valves and valve train of the M52 and S52 engines in the BMW 323i, 328i, 528i, M3, and Z3 from 1996–2000. BMW calls it the cylinder head cover, and it is also known as a rocker cover. A valve cover keeps engine oil inside the top of the engine and keeps dirt, debris, and other contaminants away from the valve train. This one weighs 2.3 kg (5 lb) and is sold as one piece. BMW's production record for the number begins in September 1995.

Original BMW Parts are backed by a 24-month parts warranty.

One cover number serves two engine families. BMW pairs it with the M52 engine in the E36 323i and 328i, the E39 528i, and the Z3 2.8, and with the S52 engine in the E36 M3 and the Z3 M Roadster and M Coupe. That makes the engine code the deciding detail when choosing this cover. BMW's parts data assigns the cover by chassis and engine together, so a 3 Series, 5 Series, or Z3 qualifies only when both match.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-12-1-703-341
• BMW part name: cylinder head cover
• Engines: M52 and S52
• Chassis: E36, E39, and Z3
• Weight: 2.3 kg (5 lb)
• Sold as: one piece
• Production start: September 1995
• Supersedes: 11-12-1-748-630
• Warranty: 24-month Original BMW parts warranty

Common Questions

Does this replace 11-12-1-748-630?
Yes. BMW shows 11-12-1-703-341 superseding 11-12-1-748-630 and marks the change as retrospectively interchangeable, so it fits cars built with the older cover.

Can the cover itself fail, or only the gasket?
The cover can fail too. High engine temperatures can warp or crack a valve cover over time.

Call or email PMB if you want help matching the rest of your M52 or S52 top-end parts.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.