BMW N63 Cut Ring Head Gasket Set by Athena-SCE Bore Size - Thickness:90.5 mm - 0.047" this kit features Viton valve

this kit features Viton valve stem seals

including increased clamping force and improved head gasket sealing

this BMW M50 Non-VANOS piston set features:

Why Choose 5150 AutoSport Pro-Xtreme Pistons

Aerospace-grade alloy construction for outstanding strength and longevity

BMW N63 Cut Ring Head Gasket Set by Athena-SCE Bore Size - Thickness:90.5 mm - 0.047" this kit features Viton valveDesigned specifically for the BMW N63 V8 engine to replace BMW part numbers 11127567764 and 11127567765 of the F10 F11 F12 F13 F14 F15 F16 F01 F02 chassis. Sold as a set Includes Bank 1 and Bank 2 Gaskets Factory OEM and 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