This tool is used to cut an O-ring receiver groove into the block for holding the high cylinder pressures a 6.5L turbo diesel produces. Any build can benefit from this modification in the long run since they all have high compression regardless of power level. Once installed, the metal adds additional support to hold the fire ring of the head gasket in place so it won't shift and blow out with the high cylinder pressures seen with added fuel and boost.
Includes 1lb spool of copper wire.
Will include instructions from the manufacturer along with our instruction sheet on how to apply their concepts to a 6.2 or 6.5L turbo diesel block.
Note, this tool is for use during a full rebuild where you can properly prep a block before final assembly.