Product description
6.7L Fire Ring gasket .046 thick , 4.560″ wire O.D.
1.25mm gasket, radiused grooves should be .019†in the block and head or .038â€-.039†if only using one groove in either the head or block
For best results please have your head and block machined prior to installation for flatness. For engines under 800hp, cutting grooves in the head or block is adequate, but for higher horsepower engines we suggest cutting grooves in both the head and block.