Genuine BMW Rear Main Seal, BMW S58 3.2L - Stability Under Boost: The

- Stability Under Boost: The improved sealing provided by O-rings ensures that the engine maintains stable performance under high boost pressures

These premium bearings feature Calico coatings that significantly reduce friction

Piston Sets** Include:

2L Porsche 911 Carrera engines with 127 mm Rods and 23 mm Pins

Genuine BMW Rear Main Seal, BMW S58 3.2L - Stability Under Boost: TheThe rear main seal, also known as the rear crankshaft seal, is a crucial component in an engine. Genuine BMW Part Number: 11148664904 Purpose 1. Prevents Oil Leaks: The primary function of the rear main seal is to prevent engine oil from leaking out of the rear end of the crankshaft. It seals the gap between the crankshaft and the engine block or the transmission housing, ensuring that the oil remains within the engine. 2. Maintains Oil Pressure: By