Tomei HEAD GASKET EJ255 06-08 WRX/EJ257 WRX STI 04+ 101.2-1.2mm WASHER SET 0 × 60°×60° TC 160

0 × 60°×60° TC 160 106 10 8 1

however the stock blow off valve tends to keep releasing boost under high boost and it causes poor response and less peak power

45 115 PONCAM RB25DE(T)

APPLICATION BORE P/N NOTES Evo I-Evo IX φ85

2mm 11044R872M Metal Bead 1

Tomei HEAD GASKET EJ255 06-08 WRX/EJ257 WRX STI 04+ 101.2-1.2mm WASHER SET 0 × 60°×60° TC 160PRODUCT INFO APPLICATION BORE THICKNESS P N MATERIAL STRUCTURE NOTES EJ255 06 08 WRX EJ257 WRX STI 04 101. 2 0. 7mm 1361101071 Metal Super Grommet 2p Set 1. 0mm 1361101101 1. 2mm 1361101121 1. 5mm 1361101151 FEATURE SPEC SUPER GROMMET DESIGN Although the stock product is not metal, yet the sealing performance is limited due to the grommet type design. The sealing performance has been improved considerably with the super grommet,to suit these engines