BC Brian Crower offers 0.8mm thick head gaskets for the 4G63 Evo 9 with an 86mm bore, providing exceptional sealing under extreme boost pressures. Manufactured in Japan, these gaskets are made from die-cut layers of stainless steel, ensuring superior consistency compared to other leading brands. Unlike inferior gaskets with high-profile beads prone to fatigue and leakage, BC gaskets feature a 0.2-micron layer of Nitrile rubber on pre-coated stainless steel, effectively sealing the cylinder head surface. This rubber layer accommodates surface roughness between 10 to 15 microns, ensuring a perfect seal at operating temperatures. In contrast, FKM gaskets fail to fill surface irregularities due to their high heat resistance, preventing proper sealing.
Vehicle Fitment:
2005-2007 Mitsubishi Evo 9
CT9A Evolution IX
(4G63 Engine)
Purchase Includes:
(1) Head Gasket
