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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 (13)

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

T#:640154

Part#: 11157646086

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Sale - Save 21% $ 52.99

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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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Crankcase Ventilation Valve With Gasket

T#:48125820

Part#: 11127809512

Ships on Aug 11, 2026

Sale - Save 21% $ 61.99

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05-03-2026

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

T#:640153

Part#: 11157646087

In Stock

Sale - Save 20% $ 49.99

This product was last offered at the strikethrough price on
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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OEM Rein Cylinders 5-8 Crankcase Ventilation Connecting Pipe - E70/1 ...

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T#:402034

Part#: 11157646087

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$ 53.99 USD

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$ 53.99 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, OEM Rein pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Rein Crankcase Vent Pipe - Cylinders 1-4 - E70, E71, F01, F02, F07, F...

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T#:591595

Part#: 11157575640

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$ 42.99 USD

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$ 42.99 USD

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Replace your damaged crank vent pipe

OEM Rein Cylinders 1-4 Crankcase Ventilation Connecting Pipe - E70/1 ...

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T#:402033

Part#: 11157646086

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$ 50.99 USD

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$ 50.99 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, OEM Rein pipes are a perfect replacement to restore a tight seal and prevent any check engine codes.

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Rein Crank Case Vent Hose - E60, E82, E83, E88, E90, E91, E92, E93, Z...

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T#:402018

Part#: 11157559528

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$ 48.99 USD

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Over time this hose can become clogged and blocked up causing running problems. This is a direct factory replacement for the PCV hose.

Rein Crankcase Vent Pipe - Cylinders 5-8 - E70, E71, F01, F02, F07, F...

2X Entries For Our G87 M2 Sweepstakes! We Price Match - Give Us A Call or Chat!

T#:591596

Part#: 11157575641

In Stock

$ 45.99

This product was last offered at the strikethrough price on
04-30-2026

$ 44.99 USD

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$ 44.99 USD

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Replace your damaged crank vent pipe

Crankcase Vent Pipe - Cylinders 5-8

T#:35357253

Part#: 11157589992

In Stock

Sale - Save 15% $ 46.99

This product was last offered at the strikethrough price on
05-03-2026

$ 39.87 USD

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Crankcase Vent Pipe - Cylinders 1-4

T#:35357254

Part#: 11157589989

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$ 46.99

This product was last offered at the strikethrough price on
05-03-2026

$ 36.99 USD

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$ 46.99

This product was last offered at the strikethrough price on
05-03-2026

$ 36.99 USD

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OEM Rein CCV Hose - E60/1/3/4/5/6 E70 N62

For vehicles with a production date from 11/2006+

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T#:402019

Part#: 11617563477

Ships in 1-2 days

$ 104.99 USD

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$ 104.99 USD

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Is your Crankcase Ventilation system malfunctioning? Or maybe it's just time to refresh the system? This part is the necessary hose to refresh your CCV system.

Rein Crank Case Ventilation Valve - Priced Each

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T#:17738377

Part#: 11158647299

In Stock

$ 79.99

This product was last offered at the strikethrough price on
03-26-2026

$ 73.99 USD

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$ 73.99 USD

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Rein's OE quality breather hose helps prevent pressure build-up in the engine.

Bremmen Parts O Ring

T#:558205

Part#: 11617533329

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Sale - Save 30% $ 6.99

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05-03-2026

$ 4.89 USD

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Seals the PCV angle connector to the intake manifold

Pressure Regulator Valve Repair Kit

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T#:600041

Part#: 11127547058

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$ 14.99 USD

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Rein Pressure Regulator Valve Repair Kit - E53, E60, E63, E64, E65, E...

T#:55821694

Part#: 11127547058

Ships in 4 Business Days

$ 16.99 USD

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$ 16.99 USD

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This Rein Automotive repair kit allows you to service the internal components of the crankcase breather valve independently. Instead of replacing the entire, costly valve cover or manifold assembly, this kit provides the exact wear items required to rebuild the factory housing back to original operating specifications. All components are manufactured to strict OE tolerances. The diaphragm is molded from premium, oil-resistant elastomers engineered to withstand prolonged exposure to aggressive synthetic lubricants, fuel vapors, and extreme under-hood heat cycles without losing its elasticity or sealing profile.

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

T#:1195924

Part#: 11157575641

Ships in 1-2 days

Sale - Save 10% $ 63.23

This product was last offered at the strikethrough price on
05-03-2026

$ 56.91 USD

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Replace your damaged crank vent pipe

Crankcase Ventilation Valve

T#:48125821

Part#: 11127803790

Ships on Jan 13, 2027

Sale - Save 24% $ 15.99

This product was last offered at the strikethrough price on
05-03-2026

$ 12.23 USD

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$ 15.99

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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

T#:52551447

Part#: 11537806706

Ships on Sep 28, 2026

Sale - Save 20% $ 129.99

This product was last offered at the strikethrough price on
05-03-2026

$ 103.99 USD

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$ 129.99

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

T#:1195923

Part#: 11157575640

Ships on Aug 11, 2026

Sale - Save 7% $ 52.99

This product was last offered at the strikethrough price on
05-03-2026

$ 49.41 USD

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Sale - Save 7%

$ 52.99

This product was last offered at the strikethrough price on
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$ 49.41 USD

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Replace your damaged crank vent pipe

Crank Case Ventilation Valve - Priced Each

T#:53326230

Part#: 11158647299

Ships on Aug 11, 2026

Sale - Save 20% $ 80.99

This product was last offered at the strikethrough price on
05-03-2026

$ 64.79 USD

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$ 80.99

This product was last offered at the strikethrough price on
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$ 64.79 USD

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Oil Separation & Breather System
- CCV/PCV Breather Hoses (13)

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