Original BMW Cylinder Head Cover with Oil Separator for BMW M2 Competition, M3, and M4 (2015–2021)

Made in Austria, this Original BMW cylinder head cover closes off the top of the S55 engine in the 2015–2021 BMW M2, M3, and M4, with its PCV oil separator built in. Most shops call this part the valve cover. Like any valve cover, it holds oil in around the camshafts and valvetrain and keeps dirt and debris out of the top of the engine. BMW puts the weight at 3 kg (6.7 lb) and shows production of this number starting in March 2014.

Original BMW Parts carry a 24-month parts warranty.

BMW uses this one cover across its S55 M cars, so the M3, M4, and M2 Competition all take the same part number. The cover comes with the hardware BMW pairs with it: a new valve cover gasket, 11-12-7-587-804, plus 32 ASA mounting bolts made up of fourteen 11-12-7-576-310, ten 11-12-7-584-156, and eight 11-12-7-544-369. The cover goes on with a fresh seal and new fasteners straight from the box.

Technical Details

• Manufacturer: BMW, made in Austria
• Part number: 11-12-7-846-359
• BMW part name: Cylinder head cover
• Engine: S55
• Weight: 3 kg (6.7 lb)
• Production start: March 2014
• Oil separator: integrated PCV oil separator, not sold separately
• Included: valve cover gasket 11-12-7-587-804 and 32 ASA bolts (14 x 11-12-7-576-310, 10 x 11-12-7-584-156, 8 x 11-12-7-544-369)
• Sold as: one cover with gasket and bolts
• Warranty: 24 months on Original BMW Parts

Common Questions

Can I replace just the oil separator?
No. The PCV oil separator is integrated into this cover and cannot be replaced separately, so a separator fault calls for the complete cover.

Does it fit the M4 Convertible?
Yes. The F83 M4 Convertible takes the same cover as the F82 M4 and the F80 M3.

PMB carries Original BMW engine parts for the S55 M cars covered here.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.