Original BMW Six-Cylinder Crankshaft Sprocket, Timing and Oil Pump Chain Drive, for BMW 3 Series, 5 Series, M3, X3, X5, Z3, and Z4 (1991–2006)

Attached to the crankshaft, the Original BMW sprocket 11-21-1-719-984 drives both the timing chain and the oil pump chain on M50, M52, M54, M56, S50, and S52 six-cylinder engines in 1992–2006 BMW 3 Series, 5 Series, M3, X3, X5, Z3, and Z4 models. Each crankshaft rotation turns the timing chain that drives the camshafts, while the same sprocket also turns the chain feeding the oil pump. It is usually a lifetime component, but it is commonly replaced during a timing chain service while the front of the engine is open. The sprocket weighs 264 g (0.6 lb) and is made in Germany.

Original BMW Parts carry a 24-month parts warranty.

BMW has produced this number since September 1989 and lists it for engines from the M50 through the M54 and M56, so one sprocket covers E34 and E36 cars as well as the later E46, E39, E53, E83, E85, and Z3. The M3 versions with the S50 and S52 engines use the same part.

Technical Details

• Manufacturer: BMW
• Part number: 11-21-1-719-984
• BMW name: sprocket, crankshaft
• Weight: 264 g (0.6 lb)
• Production start: September 1989
• Drives: timing chain and oil pump chain
• Country of manufacture: Germany
• Sold individually
• Warranty: 24 months

Common Questions

Does this sprocket wear out?
It is usually a lifetime part, but it is often replaced during a timing chain service.

Does it also drive the oil pump?
Yes. It drives the timing chain and the oil pump chain.

Fitment & Compatibility

Use the table below to verify the year and submodel for your build. Send your VIN and PMB Performance will confirm the fit, drawing on more than 20 years in the trade.