Evo 123 - Brian Crower - 4G63 Head Gasket (86mm / 0.8mm)
MLS Head Gasket for the 4G63T
Brian Crower's 4G63 head gasket is a multi-layer steel (MLS) gasket built for ultimate sealing even at extreme boost pressures. It features individual die-cut layers of stainless steel with superior consistency, pre-coated with a uniform 0.2 micron layer of Nitrile rubber that fills the cylinder head surface and seals at operating temperature. Made in Japan to a precise 86mm bore and 0.8mm thickness.
Specifications
- Material: Multi-layer steel (MLS), die-cut stainless steel layers with Nitrile coating
- Bore: 86mm
- Thickness: 0.8mm
- Origin: Made in Japan
Why it matters on your Evo 1-3
A boosted 4G63 puts huge load on the head gasket, and a failed seal is one of the most common ways a built motor goes down. An MLS gasket rated for high boost holds combustion pressure reliably, and the 86mm bore size leaves room for common overbores while the 0.8mm thickness helps recover compression and quicken spool on a tuned engine.
Fitment
Mitsubishi Lancer Evolution I, II and III (CD9A / CE9A), 1992 to 1995. 7-bolt 4G63T 2.0L turbo.
