The S65 factory head gaskets specifications are 92mm Bore with a thickness of 0

They started by eliminating any bits of plastic from the design

known for powering models such as the BMW E12

in collaboration with industry professionals from NASCAR

85mm Intake / 9

BimmerWorld Floor-Mount Seat Adapters, BMW F8X M 01806-12 The S65 factory head gasketsFit either driver or passenger side. Safety First: BimmerWorld's Billet Aluminum Seat Floor Mount Adapters were engineered using FEA to model the unit as it would be installed in a car with a seat attached, then applied actual loads as though they were distributed over a set of imaginary seat mounts, simulating various forces that would be induced under cornering, acceleration, and braking. They also performed loading under a crash scenario, using