Original BMW Crankcase Vent Valve Extraction Line for N52 BMW 325i, 330i, 525i, 530i, and Z4 (2006–2007)

BMW calls part 11-15-7-537-701 an extraction line, and it is the crankcase ventilation hose that comes off the vent valve on the N52 six-cylinder in 2006–2007 BMW 325i, 330i, 525i, 530i, and Z4 models, including the xi all-wheel-drive versions. Made in Germany, it weighs just 40 g (1.41 oz) and is sold individually. The crankcase ventilation system takes pressurized vapor from inside the engine, separates out the oil, and sends the remaining gases into the intake to be burned. This line is one link in that path, so any crack or loose fitting turns into an air leak on the intake side.

Original BMW Parts carry a 24-month parts warranty.

The name matters when shopping. This one is the extraction line from the vent valve, and BMW ties it to the N52 engine in the E90 and E91 3 Series, the E60 and E61 5 Series, and the E85 roadster and E86 coupe Z4. BMW shows it in production from December 2004.

Technical Details

• Manufacturer: BMW
• Part number: 11-15-7-537-701
• BMW part name: Extraction line
• Position: from the crankcase vent valve
• Engine: N52
• Weight: 40 g (1.41 oz)
• Production start: December 2004
• Country of manufacture: Germany
• Warranty: 24 months on Original BMW Parts

Common Questions

Where does this line connect?
It is part of the crankcase ventilation system and runs from the vent valve. BMW names it the extraction line for that reason.

What happens when this line leaks?
Unmetered air entering the intake can trigger a check engine light for an air leak and, if severe, a misfire. Escaping vapor also leaves oil residue on the hose and surrounding engine parts.

Does it fit a 2008 or later N52 car?
No 2008 or later model is in this part's fitment, so check the table before ordering.

Fitment & Compatibility

Compare your production year and trim against the table below. PMB Performance has spent over 20 years matching parts to vehicles and can verify this against your VIN.