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

CCV Oil Separator System for BMW 5 Series E39 (1996-2003)

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:

Bav Auto Crankcase Pressure Regulator Valve - E36 E39 Z3

For vehicles with production date up to 09/1998

10X Entries Into Our F80 M3 Sweepstakes

T#:638090

Part#: 11151703484

In Stock

Sale - Save 20% $ 38.99

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

$ 31.19 USD

Add to Wish List

Qty

Sale - Save 20%

$ 38.99

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

$ 31.19 USD

Add to Wish List

BMW has an issue with oil separators freezing in cold weather if the engine is not fully warmed up during driving. Common symptoms are a howling noise followed by oil leaks. Crankcase breather valve used to purge the oil vapor from the engine block into the valve cover. This valve has 4 hoses connected to it, running to dipstick, valve cover, air intake. You should also look into replacing your valve cover gasket when changing the separator.

Show More Show Less

PCV Valve Seperator

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