Piston Cooling Jet Pressure TesterThis tool allows you to test all Twin Cam and M8 piston cooling jets. Leaking piston cooling jets can send too much oil into the crankcase, causing high engine oil sump levels. Clogged cooling jets can reduce or eliminate lubrication to the pistons and cylinders. Helps diagnose or prevent issues prior finishing up an engine build. Offered in 2 options. "Plate only" is designed to be used with Feuling's #9010 TC camplate tester. "Stand alone kit"