Oil Pump Nut and Shim for Pump Sprocket-1600/2002/2002tii, 320i (77-83), M3 (88-91) -13 sets available . Slight oxidation on some of the shims as they are uncoated metal. The shims are NLA from BMW.
Part number 07119921616 is a Genuine BMW Hex Nut (M10x1). It features a flat, low-profile design and a fine thread pitch used heavily across classic BMW passenger cars, vintage BMW Motorrad motorcycles, and the classic M50/S50-era oil pump assemblies. Part number 07119932634 is a Genuine BMW Spacer / Shim
- Thread Size: M10 x 1.0 (Metric 10mm outer diameter with fine 1.0mm thread pitch)
- Design Profile: Flat / Low-profile style (
FLACH)
- Material Class: Often specified in stainless steel (V2A) or dark metal variants depending on factory application.
This specialized fine-thread fastener is notably used across three major BMW categories:
- Engine Oil Pump: Serves as the critical Oil Pump Gear/Sprocket Nut securing the sprocket to the oil pump shaft on older classic powerplants—such as the M10, M20, M30, and early M50/S50 variants (found in 1600, 2002, 320i, early 3-Series, 5-Series, and E30 M3 models).
- Vintage Motorcycles (BMW Motorrad): Extensively utilized for securing the rear shock top threads, brake pedal assemblies, and rear brake lever mechanisms on classic Beemers like the R50, R60, R69S, and R75/6.
- Chassis & Body Trim: Found on unique components, such as specific assembly points on the rare BMW Z8 roadster.
This component frequently cross-references or swaps out with updated self-locking equivalents. For high-vibration applications like the oil pump sprocket, BMW diagrams often swap or substitute this part with numbers like 07129922436 (a self-locking M10x1 collar nut) to prevent backing out.
