Home
Intake
Intake Manifold Upgrades & Components (DISA, Vacuum, CCV
CCV Oil Separator System

CCV Oil Separator System for BMW 3 Series E46 (1999-2005)

BMWs oil separator and crankcase ventilation system is excellent at what it does when properly maintained. Always inspect any visible hoses when you are under the hood and follow the manufacturers replacement schedule.

Sort By:

Comprehensive Constant Pressure Valve Replacement Kit

10X Entries Into Our F80 M3 Sweepstakes

T#:557341

Part#: 11111318185TMSKT

In Stock

Sale - Save 2% $ 85.93

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

$ 84.32 USD

Add to Wish List

Qty

Sale - Save 2%

$ 85.93

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

$ 84.32 USD

Add to Wish List

When your CPV O-ring fails it causes a slow oil leak on the passenger side of the engine, making an oily mess that frequently resembles a rear main seal leak. Replacing the CPV with an upgraded o-ring ensures a long-term solution to this common problem.

The factory o-ring over time fails from heat cycling and oil exposure due to the Buna rubber used in OEM o-rings, while the included Viton Fluoroelastomer is resistant to a much higher temperature to ensure prolonged life without leaking.

Show More Show Less

PCV Valve Separator

10X Entries Into Our F80 M3 Sweepstakes

T#:15511828

Part#: 11617533400

In Stock

Sale - Save 22% $ 44.99

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

$ 34.99 USD

Limited Qty Sale

Add to Wish List

Qty

Sale - Save 22%

$ 44.99

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

$ 34.99 USD

Limited Qty Sale

Add to Wish List

BMW has an ongoing issue with oil separators freezing in cold weather if driving is done before the vehicle is fully warmed up. There is often a howling noise followed by numerous oil leaks. The crankcase breather valve is used to purge the oil vapor from the engine block into the valve cover. However, sometimes condensation can cause it to freeze, causing the entire oil separator system to fail, crack, and disintegrate. Replace all the components of the oil separator system together to prevent damage to all the aspects of your engine. As long as you have everything off, you can rest assured that new parts will last and be reliable. Don't forget to order a valve cover gasket to make your separator change easier.

Show More Show Less