Original BMW Vent Pipe, Intake to Engine Block, for B58 BMW 2, 3, 4, 5, 6 GT, and 7 Series, X3 M40i, and X4 M40i (2016–2021)

On B58-powered BMWs from 2016–2021, this Original BMW crankcase vent pipe is the breather line that runs between the intake pipe and the engine block as part of the positive crankcase ventilation system. An engine builds crankcase pressure as a byproduct of combustion. The ventilation system routes that pressurized air and oil vapor so the oil returns to the engine and the air is burned with the intake charge. BMW names the part a vent pipe. It weighs 24 grams and is made in Germany. With age, ventilation hoses turn brittle from heat, oil vapor, and pressure and begin to leak, and the system can clog with blow-by and oil sludge.

Original BMW Parts carry a 24-month parts warranty.

BMW uses this single vent pipe across a wide spread of chassis, including the F22 and F23 2 Series, the F30, F31, and F34 3 Series, and the F32, F33, and F36 4 Series. It also covers the G30, G31, and G38 5 Series, the G32 6 Series Gran Turismo, the G11 and G12 7 Series, the G01 X3, and the G02 X4. Production of this number began in July 2015. BMW's parts data ties it to the B58 six-cylinder on every one of those cars, so four-cylinder versions of the same models are not covered by this part.

Technical Details

• Manufacturer: BMW (Genuine BMW)
• Part number: 11-15-7-642-546
• BMW part name: vent pipe
• Routing: intake pipe to engine block
• Engine: B58
• Weight: 24 g (0.85 oz)
• Production start: July 2015
• Country of manufacture: Germany
• Sold as: one piece
• Warranty: 24 months on Original BMW Parts

Common Questions

What are the signs of a leaking crankcase vent pipe?
Unmetered air can set a check engine light for an intake leak, and a severe leak can cause rough running or a misfire. Oil residue around the hose and engine, and in bad cases a burning oil smell, are also common.

Does the X3 M40i use the same vent pipe as the 340i?
Yes. BMW uses this one part number on the B58 in both models, along with the other applications above.

PMB Performance ships this vent pipe as a Genuine BMW part for B58 crankcase ventilation repairs.

Fitment & Compatibility

Use the table below to verify the year and submodel for your build. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.