Dicke Metallkopfdichtung 1.8T Motorenteile Zylinderkopfdichtungen VAG Thick metal head gasket for 1.8T Headgasket to reduce compression ratio Thicker headgasket for any 1.8T engine This head gasket reducing compression ratio by 0,5 - 1,0 points, depending on stroke. The reduction of the compression ratio is required at a certain point to achieve higher boost levels without risking knock or detonation. Depending on engine model this gasket is required to achieve power outputs beyond 250hp. Thickness: 2,35mm Bore Size: 82,30mm