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Bremmen Parts Oil Separation & Breather System for BMW X Series E70 (2007-2013)

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Every car has a crankcase vent system that is supposed to suppress oil from making it into the intake ports and combustion chamber. A good functioning system will separate oil from the atmosphere and return it to the oil pan (or collect it in a catch can) while allowing the leftover vapors to burn in the combustion chamber or recirculate through the system. This has always been known as a PCV system (Positive Crankcase Ventilation) but BMW has several other names for it - oil separator, crankcase vent (CCV), and cyclonic separator. Failures in the system will allow raw oil to enter the intake and eventually into the engine itself which can have disastrous effects on engine performance and longevity. As emissions regulations on oil and gas venting have gotten more stringent the PCV systems have gotten more complex and failure prone. And because the CCV is intertwined with other systems you could experience rough running, loss of power, higher oil consumption, misfiring, stalling, or other annoying issues. There is no replacement interval for these so we recommend inspecting your crankcase vent system as part of your regular maintenance routines. Symptoms of a bad crankcase vent are: whitish or yellowish film on the underside of the oil cap, whistling/squealing noises (not caused by a belt), suction on the oil cap that makes it hard to unscrew, large amounts of white smoke from the exhaust, and excessive oil consumption.

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CCV/PCV Breather Hoses (7)

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Bremmen Crankcase Ventilation Connecting Pipe - Cylinders 1-4 - E70/1...

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T#:640154

Part#: 11157646086

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05-03-2026

$ 41.61 USD

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Connects to the valve cover over cylinders 1-4. These pipes tend to crack after become brittle from numerous heating and cooling cycles. If this happens, Bremmen pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Bremmen Crankcase Ventilation Connecting Pipe - Cylinders 5-8 - E70/1...

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T#:640153

Part#: 11157646087

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05-03-2026

$ 39.98 USD

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Connects to the valve cover over cylinders 5-8. These pipes tend to crack after become brittle from numerous heating and cooling cycles. If this happens, Bremmen pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Crankcase Ventilation Valve With Gasket

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T#:48125820

Part#: 11127809512

Ships on Aug 11, 2026

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$ 48.95 USD

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Restore proper engine ventilation with this premium replacement Crankcase Breather Valve (11127809512).

Designed to match the performance of the original BMW unit (OE 11-12-7-809-512 / 11-12-7-803-790), this valve maintains correct crankcase pressure, helps prevent oil buildup, and supports clean, efficient engine operation.

Crafted from high-quality, long-lasting materials and shaped to replicate the factory design, it installs easily in place of the stock breather without any modifications required.

Whether you’re addressing pressure-related drivability issues, refreshing your engine’s ventilation system, or performing preventative maintenance, this breather valve provides dependable performance and protects your BMW’s engine for the long haul.

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Crankcase Vent Pipe - Cylinders 5-8

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T#:35357253

Part#: 11157589992

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$ 39.87 USD

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Crankcase Vent Pipe - Cylinders 1-4

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T#:35357254

Part#: 11157589989

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$ 46.99

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$ 36.99 USD

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$ 46.99

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Bremmen Parts O Ring

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T#:558205

Part#: 11617533329

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$ 4.89 USD

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Seals the PCV angle connector to the intake manifold

Bremmen Parts Crankcase Vent Pipe - Cylinders 5-8 - E70, E71, F01, F0...

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T#:1195924

Part#: 11157575641

Ships in 1-2 days

Sale - Save 10% $ 63.23

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05-03-2026

$ 56.91 USD

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Replace your damaged crank vent pipe

Crankcase Ventilation Valve

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T#:48125821

Part#: 11127803790

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$ 12.23 USD

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Ensure your BMW engine runs clean and efficiently with this Crankcase Breather Valve Diaphragm Spring and Cap (11127803790).

A direct-fit replacement for the original BMW breather (OE 11127803790 / 11-12-7-803-790), this valve maintains proper crankcase pressure, reduces oil buildup, and promotes smooth engine performance.

Constructed from durable, high-quality materials and engineered to OEM specifications, it installs easily without any modifications.

Ideal for maintenance, resolving crankcase pressure issues, or restoring your engine’s ventilation system, this breather valve delivers reliable performance and helps protect your BMW for years to come.

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E70 Return Pipe

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T#:52551447

Part#: 11537806706

Ships on Sep 28, 2026

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$ 103.99 USD

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Bremmen Parts Crankcase Vent Pipe - Cylinders 1-4 - E70, E71, F01, F0...

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T#:1195923

Part#: 11157575640

Ships on Sep 8, 2026

Sale - Save 7% $ 52.99

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$ 49.41 USD

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Replace your damaged crank vent pipe

Crank Case Ventilation Valve - Priced Each

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T#:53326230

Part#: 11158647299

Ships on Sep 8, 2026

Sale - Save 20% $ 80.99

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$ 64.79 USD

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Oil Separation & Breather System
- CCV/PCV Breather Hoses (7)

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