Original BMW Crankshaft Woodruff Key, 5 x 6.5 mm, for BMW 3 Series, 5 Series, 7 Series, 840Ci, M3, X3, X5, Z3, and Z4 (1982–2013)

Measuring 5 x 6.5 mm, this Original BMW Woodruff key locks drive components to the crankshaft on BMW engines across the 3 Series, 5 Series, 7 Series, 840Ci, M3, X3, X5, Z3, and Z4. A Woodruff key is a half-round key that sits in a matching slot cut into the shaft, while its exposed edge engages a keyway in the part fitted over it, so that part turns with the shaft instead of slipping. BMW has made this key since January 1978. It weighs 2 g (0.07 oz) and is made in Germany.

Original BMW Parts carry a 24-month parts warranty.

BMW has kept one number on this key through decades of engine changes, so it turns up in engine families that otherwise share very little. For the cars on this page, BMW's data shows it on the M20 and M21 in the E28 and E30, the M42 and M44 in the E30 and E36 318 models and the Z3, and the M50 and M52 in the E34, E36, and E39. It also covers the M54 and M56 in the E46, E53, E83, and E85, the M60 and M62 in the E31, E32, and E38, the S50 and S52 in the E36 M3 and Z3 M Roadster, and the M57N2 diesel in the E90 335d and E70 X5 xDrive35d. A 1980s 325e and a 2009 335d take the same key.

Technical Details

• Manufacturer: BMW, Original BMW part
• Part number: 07-11-9-951-480
• BMW name: Woodruff key
• Size: 5 x 6.5 mm
• Weight: 2 g (0.07 oz)
• Production start: January 1978
• Made in: Germany
• Sold as: one key
• Warranty: 24 months

Common Questions

What does this key lock on the crankshaft?
On chain-driven engines, it locks the timing chain and oil pump chain sprocket to the crankshaft.

How many keys come in an order?
One. Each key is sold on its own, so order the quantity your job calls for.

Small hardware like this is easy to overlook, and PMB Performance can help you round out a BMW engine parts order.

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.