Original BMW Oil Pump Sprocket Retainer for BMW 1, 3, 5, 6, 7 Series, X1, X3, X5, X6, and Z4 (2006–2019)

The Original BMW oil pump sprocket retainer is a small plastic clip that secures the drive sprocket on the oil pump of N5x-family six-cylinder and S55 BMW engines, fitting models from the 2006 325i through the 2019 X6 xDrive35i. BMW calls it Securing for engine sprocket, and it weighs just 2 g. Its job is to retain the oil pump drive sprocket. BMW has produced this retainer since September 2004, and it is made in Germany.

Original BMW Parts carry a 24-month parts warranty.

Because the retainer is plastic, it wears over time and often breaks apart into many pieces. Those pieces can damage the oil pan or lead to oil starvation, BMW uses the same retainer across a long run of engines: the N51, N52, N52N, and N53 naturally aspirated sixes, the N54 and N55 turbocharged sixes, and the S55. That breadth covers the E8x, E9x, and F3x 3 Series families, E60 and F10 5 Series, E63 and F06 6 Series, F01 and F02 7 Series, E84 X1, E83 and F25 X3, E70 and F15 X5, E71 and F16 X6, and E85, E86, and E89 Z4.

Technical Details

• Manufacturer: BMW, Original BMW Parts
• Part number: 11-31-7-523-891
• BMW part name: Securing for engine sprocket
• Function: retains the oil pump drive sprocket
• Material: plastic
• Weight: 2 g (0.07 oz)
• Production start: September 2004
• Made in Germany
• Sold individually
• Warranty: 24 months on Original BMW Parts

Common Questions

Why replace such a small part?
The plastic retainer wears and can break into pieces that damage the oil pan or starve the engine of oil.

Does it fit both the N54 and N55 engines?
Yes. BMW uses this retainer on the N54 and N55 turbocharged sixes as well as the N51, N52, N52N, N53, and S55 engines.

Fitment & Compatibility

Check the table below for the exact year, model, submodel, and any listed notes. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.