and X5M/X6M models—with 5150 AutoSport’s Pro-Xtreme Forged Pistons

accessing your ECU files to modify configurations completely remote

making them ideal for forced induction and racing applications

This service strengthens your factory axles by replacing key internal components with aerospace-grade materials and high-strength Chromoly upgrades

- 5150 High Performance Main Bearing Set

Genuine BMW Rear Main Seal, BMW B48 3.0 and X5M/X6M models—with 5150 AutoSport’sThe 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