Jims Piston Tester Jet - M8 730

Tester Block - Piston Cooling/Jet Pressure - Twin Cam/M8 9070

Modified to handle upgraded stroker flywheels strokeWorks with all stock and high-performance flywheel assembliesMade in the U.S.A.

• A complete kit including the tool plate, gauge, regulator and hardware • Allows you to test all Twin Cam and M8 piston cooling jets • Helps diagnose or prevent issues prior finishing up an engine...