Original BMW Crankcase Vent Hose for BMW 135i, 1 Series M, 335i, 335is, 535i, and Z4 (2007–2016)

Running from the PCV valve in the valve cover to the intake manifold, this Original BMW crankcase vent hose returns crankcase vapors to the intake on N54 and N54T engines in the 135i, 1 Series M, 335i, 335is, 535i, and Z4. BMW calls it the vent hose. It is part of the positive crankcase ventilation system. The hose sits at the back of the intake manifold toward the firewall. BMW gives its weight as 60 g (0.1 lb), and production of this number began in June 2006. It is made in France and sold as a single hose. Every running engine builds crankcase pressure from combustion blow-by, and the PCV hoses route that air and vapor back into the intake to be burned, not vented to the atmosphere.

Original BMW Parts carry a 24-month parts warranty.

Heat, pressure, and oil vapor wear on this hose over time. The PCV system can clog with blow-by and oil sludge, and the hose can turn brittle and start to leak. Its plastic connectors and securing clips can snap during removal or during other service work near the intake. A cracked or split hose lets unmetered air in. That can set a check engine light with intake leak or airflow codes, and a severe leak can cause rough running and misfires. Escaping vapor also leaves oil residue on the hose and nearby parts, and in bad cases you will smell burning oil.

Technical Details

• Manufacturer: BMW (genuine part)
• Part number: 11-15-7-553-949
• BMW part name: vent hose
• System: crankcase ventilation, PCV valve to intake manifold
• Engines: N54 and N54T
• Weight: 60 g (0.1 lb)
• Production start: June 2006
• Country of manufacture: France
• Warranty: 24 months on Original BMW Parts

Common Questions

Where is this hose located?
It sits at the back of the intake manifold toward the firewall and connects the PCV valve in the valve cover to the intake manifold.

Can a cracked vent hose cause a misfire?
Yes. A severe leak lets in enough unmetered air to cause rough running and misfires, often with a check engine light.

PMB Performance supplies genuine BMW PCV parts for the full N54 lineup.

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, submodel, and any application notes before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.