Tomei Head Gasket Set EJ255 2006-08 WRX EJ257 WRX STI 2004+ EDC Delete Tip options include 102mm double-walled

Tip options include 102mm double-walled

In the highly competitive Japanese 4 cylinder market

not supplied

the ECE homologation is not valid anymore

and corner effectiveness - very beneficial for high performance builds and track vehicles

Tomei Head Gasket Set EJ255 2006-08 WRX EJ257 WRX STI 2004+ EDC Delete Tip options include 102mm double-walledSpecs: Bore 101mm Custom Rib Design (Improved Seal Around the Water Gallery) With each model change from Subaru engineers the improved engine design from the GC8 to GDB and A models had the increased the rib of the outer bore diameter which improved the gas sealing characteristics. But the results of that change made the water and oil galleries seal decrease. So when the power is increased there is also the increased possibility for oil and water