Original BMW S63N Cylinders 1 to 4 Crankcase Vent Hose for M5, M6, and M6 Gran Coupe (2012–2019)

BMW's crankcase vent hose for cylinders 1 to 4 carries blow-by gas out of the crankcase on the S63N engine in the F10 M5, F12 and F13 M6, and F06 M6 Gran Coupe. Blow-by builds up in the crankcase as a byproduct of combustion, and pressure left there can cause seals to fail. The crankcase vent system routes that gas through the air/oil separator, sending oil vapor back to the engine and the remaining air into the intake charge to be burned. Because the hose lives with oil vapor, heat, and pressure, it is a common failure item in the system and must be replaced as it ages. This hose weighs 49 grams, is made in Germany, and is sold as a single piece.

Original BMW Parts carry a 24-month parts warranty.

BMW marks this hose for cylinders 1 to 4, so match that designation to the hose being replaced on your engine. Production began in September 2011, and BMW applies the part across the S63N M cars of the F-series range. That covers the F10 M5 sedan, the F06 M6 Gran Coupe and its facelift, the F12 M6 Convertible, and the F13 M6 Coupe. All of these share the same part number regardless of body style.

Technical Details

• Manufacturer: BMW, Original BMW Parts
• Part number: 11-15-7-843-150
• BMW name: vent hose, cylinders 1 to 4
• Engine: S63N
• Weight: 49 g (0.1 lb)
• Production start: September 2011
• Sold as: one piece
• Made in Germany
• Warranty: 24 months

Common Questions

What are the signs this vent hose has failed?
Look for cracks, splits, or oil residue on or around the hose. Unmetered air from a leak can set a check engine light for an intake leak, and a severe leak can cause a misfire.

Can the connectors break during other work?
Yes. The plastic turns brittle with heat and oil exposure, and the clips or connectors can break during removal or nearby service.

Does it fit both the M6 Coupe and the Gran Coupe?
Yes. BMW applies it to the F13 Coupe, the F12 Convertible, and the F06 Gran Coupe, as well as the F10 M5.

Fitment & Compatibility

Use the fitment table below to confirm year, model, submodel, and application notes before ordering. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.