Original BMW Crankcase Vent Hose for BMW M5 and M6 (1987–1988)

This Original BMW vent hose is a crankcase ventilation line for the S38 engine in the BMW M5 and M6 from 1987–1988. Every piston engine pushes some combustion gas past the rings into the crankcase. A crankcase vent hose gives that blow-by gas a path out so it can be drawn back into the intake and burned instead of building pressure inside the engine. The line carries warm, oil-laden vapor under pressure, and crankcase breather hoses are a common failure item in the ventilation system. BMW names this part simply a vent hose and supplies it as a single piece. It is made in China.

BMW covers this hose with a 24-month parts warranty as an Original BMW Part.

BMW introduced this number in April 1984, and the hose is still produced today. The same number serves both the E28 M5 and the E24 M6. An owner running both cars can stock one hose number for the two of them.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-15-1-306-958
• BMW part name: vent hose
• System: crankcase ventilation
• Engine: S38
• Chassis: E28 M5 and E24 M6
• Production start: April 1984
• Sold as: one piece
• Made in China
• Warranty: 24 months

Common Questions

Is this the same hose for the M5 and the M6?
Yes. BMW uses the single number 11-15-1-306-958 on the S38-powered E28 M5 and E24 M6.

Is this a new part or a used one?
It is a new Original BMW part from current production.

PMB carries this hose for owners keeping an S38 M car sealed and running as BMW built it.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.