Engine Oil Cap, BMW - B46, B48, B58, S58, N63B

This part is listed by BMW as BMW part number 11121028899 (11 12 1 028 899) and is described as Genuine BMW Oil Cap for B46, B48, B58, S58, and N63B engines.

New style oil filler cap. If your cap is leaking, first try cleaning the surface around the gasket. If that doesn't work it may be time for a new cap. The oil cap is actually an integral part of the crankcase vent and vacuum pressure inside the valve cover. Just like a coolant reservoir cap, the oil filler cap is one of the things that regulates the amount of pressure and vacuum inside the engine. Keep in mind that too much pressure can blow oil from the cap. This would indicate a problem elsewhere in the crankcase vent system.

Also, BMW does not recommend placing the cap upside down when it's removed as residual oil will leak down past the seal. Keep the cap right side up on a clean surface.

This is a Genuine BMW oil cap with a two year warranty. Buying a Genuine part will usually be more expensive than an OEM or aftermarket brand but you are assured that it meets BMW's designs for fitment, performance, and longevity. It will also be the very latest design, incorporating any updates or revisions that an aftermarket brand typically will ignore.

This item replaces previous BMW part number 11128654637.

For full BMW fitment information or for assistance from one of our BMW experts, we recommend calling us at 877-639-9648.