Genuine BMW Rear Main Seal, BMW B48 1303410 and features advanced engineering to

and features advanced engineering to optimize combustion and increase power output

the Mishimoto Performance Air-to-Water Performance intercooler makes for not only the perfect addition to your F8X build

The Mishimoto thermostat comes pre-installed in a durable OEM-quality housing and fits many BMWs including E46

Photos for reference only - B48 cylinder head pictured

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Genuine BMW Rear Main Seal, BMW B48 1303410 and features advanced engineering toThe 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