Used to ream the pressure relief valve seat of the cam plate in all Twin Cam engines and in the oil pump of M8 engines. Compatible with OEM and aftermarket cam plates. Feuling recommends a new relief valve as Feuling fmc-566-110 relief valve, spring & roll pin kit.
Note: Can be used with fmc-566-117 (Twin Cam cam plate) and fmc-588-061 (M8 oil pump) pressure relief valve test tools.
