Original BMW Cylinder Head Cover Oil Separator Set for BMW 550i, 650i, 750i, Alpina B7, X5, and X6 (2008–2014)

Original BMW oil separator set 11-15-8-636-540 contains both cylinder head cover oil separators for the N63 and S63 V8, along with their gaskets and bolts, for the BMW 550i, 650i, 750i, Alpina B7, X5, and X6. An oil separator sits in the crankcase ventilation path and pulls oil mist out of blow-by gases before those gases are drawn back into the intake. BMW names this kit the set of oil separators for the cylinder head cover. The complete set weighs 502 g (1.1 lb). It is made in Austria and sold as one set, and production of this set began in December 2015.

Original BMW Parts carry a 24-month parts warranty.

Each cylinder bank on these V8s has its own separator, and BMW identifies the two by cylinder group. The set includes the separator for cylinders 1–4 (11-15-7-566-261) and the separator for cylinders 5–8 (11-15-7-566-260), so both banks are covered in one purchase. It also includes a profile gasket set for each side: 11-12-7-566-288 for cylinders 1–4 and 11-12-7-566-289 for cylinders 5–8. Six ASA bolts in M6 x 20 size (11-12-9-908-718) complete the kit. Ordering the set instead of the separators individually brings matching gaskets and new fasteners under a single part number.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-15-8-636-540
• BMW part name: set, oil separators, cylinder head cover
• Contents: oil separator for cylinders 1–4, oil separator for cylinders 5–8, profile gasket set for cylinders 1–4, profile gasket set for cylinders 5–8, and six ASA bolts M6 x 20
• Weight: 502 g (1.1 lb)
• Made in Austria
• Sold as: one set
• Production start: December 2015
• Warranty: 24 months on Original BMW Parts

Common Questions

What comes in this set?
Both cylinder head cover oil separators (cylinders 1–4 and 5–8), a profile gasket set for each bank, and six M6 x 20 ASA bolts.

Does it fit the X5 M and X6 M?
Yes. BMW applies it to the S63-powered X5 M (E70) and X6 M (E71) within the years shown above.

Where is it made?
This set is made in Austria.

PMB Performance carries the complete BMW set, so both banks of your V8 can be done with one order.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.