Hromee Engine Air Valve Holder and Cylinder Leakage Testing Assistant Tool with M12 or M14 Thread for GM Chevy LS1 LS3 LS6

Description

🔧 Seal it tight, diagnose right – the pro’s secret weapon!

The Hromee HR4145 Engine Air Valve Holder is a precision tool designed for gasoline engines with M12 or M14 spark plug threads. It pressurizes cylinders up to 110psi to hold valves closed, allowing valve seal replacement without engine teardown. Featuring durable brass fittings and abrasion-resistant rubber tubing, it enables quick leakage diagnosis by detecting air escaping during compression. Ideal for cars, trucks, boats, motorcycles, and ATVs, this tool streamlines engine maintenance with a convenient quick coupler and robust construction.