72mm x 0.045" Head Gasket - For GX200 and Small Block Clones

72mm bore x 0.045" thick fiber head gasket with fire ring.  Standard head gasket for 225cc, 236cc, 240cc, and other 72mm bore GX200 clone engines with pistons sitting at zero deck at top dead center. *You must always have a minimum of 0.030" of quench clearance (piston crown to head deck) to avoid having the piston hit the bottom of the head. These gaskets are thick enough to maintain that distance even if the piston is 0.010" above the deck at top dead center.* If your piston is down in the cylinder 0.020" when at top dead center, then you might aught to use a thinner 0.010" metal head gasket to avoid a drop in compression. Calculate your compression ratio to know what is right for your specific engine combination. Click here for a compression ratio calculator