





Feuling Parts Test Block (ref. 9070) — A compact and robust tool designed for jet-cooled pistons on Big Twin engines. Designed to control the pressure of the piston cooling jets on Twin Cam and M8 cylinder heads, this test block facilitates workshop diagnostics before starting or finalising an engine assembly.
Whether you are preparing an engine overhaul on a Touring bike or a Vintage/Classic model, this test block is the practical workshop accessory for quickly checking piston cooling circuits. Its red finish makes it easy to spot in the toolbox, and the supplied screws simplify integration with the Feuling 9010 tool. Ideal for mechanics and discerning enthusiasts who want to diagnose the jets before tightening and commissioning.