Replacement gasket for FEULING tool #9010. #9010 Pressure test tool is a must for any H-D Twin Cam engine builder. Bench test each camplate before installation, cycle the pressure relief valve, testing operation and assuring the valve moves freely, seats and seals each time, any leakage at the relief valve will reduce oil pressure. This tool allows the engine builder to know what PSI the relief valve opens; the spring tension can be adjusted to achieve the desired pop off PSI. Tool includes: air regulator, 0 - 100 psi pressure gauge, gasket & needed hardware, fits all Twin Cam engine camplates. Feuling recommends the camplate valve be seated 0-30 psi with full pop off at 55-60 psi. Made in the U.S.A.