Original BMW Drive Belt Idler Pulley Protection Cap for BMW E70 X5 xDrive35d (2009–2013)

The Original BMW protection cap, part 11-28-7-535-867, is the small dust cap that covers the drive belt idler pulley bolt and bearing on the E70 BMW X5 xDrive35d from 2009–2013. An idler pulley guides the accessory drive belt and spins on a sealed bearing held by a center bolt, and the cap closes over that bolt to keep dirt and water away from the bearing. BMW states this cap protects the idler pulley bearing and must be replaced if missing, or premature bearing failure can occur. It weighs 4 g, is made in Germany, and is sold as one cap. BMW shows production of this number starting in September 2004.

Original BMW Parts carry a 24-month parts warranty.

A pulley left uncapped is the case BMW warns about. The same cap appears across a wide range of BMW six-cylinder belt drives, including N52 and N53 gasoline engines and the M57N2 diesel, so one part number covers many pulleys in BMW's range. For the X5 xDrive35d, BMW applies it to the E70 and E70 facelift with the M57N2 engine.

Technical Details

• Manufacturer: BMW (Original BMW part)
• Part number: 11-28-7-535-867
• BMW part name: protection cap
• Position: drive belt idler pulley
• Weight: 4 g (0.14 oz)
• Sold as one cap
• Country of manufacture: Germany
• Production start: September 2004
• Engine: M57N2 diesel (X5 xDrive35d)
• Warranty: 24 months

Common Questions

Does a missing pulley cap really matter?
BMW says it does. The cap protects the idler pulley bearing, and running without it can lead to premature bearing failure.

Is the cap sold with a pulley?
No. This is the cap only, sold as one piece.

Fitment & Compatibility

Confirm your model year and submodel against the table below before ordering. PMB Performance can confirm this against your VIN, backed by more than 20 years of parts and fitment work.