BMW S52 Applications:

increasing the volume by 162-percent and the external fin surface area by 412-percent while retaining similar fluid pressures within the system

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Engine block and head surfaces must be clean and properly prepared for the rings to seat correctly

The Mishimoto 335i/335xi/135i radiator is precision engineered for flawless drop-in fitment while providing a 35-percent increase in coolant capacity

BMW B58 Gen1 Cut Ring Head Gasket by Athena-SCE Bore Size - Thickness:84.5 mm - 0.040" BMW S52 Applications:This B58 Gen 1 Head Gasket is specifically engineered to replace OEM part # 11128654268 and # 11128654269 Factory OEM & MLS head gaskets are only engineered to handle a limited amount of cylinder pressures before they start to leak, causing a range of issues, including engine overheating, loss of power, misfires, and in severe cases, catastrophic engine failure. Athena SCE Cut Ring Head Gaskets are uniquely designed to handle increased cylinder