JEGS Dual Gauge Leak-Down Tester

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Use to pinpoint power robbing leakage in the piston bore, rings, valves, heads or gaskets; or to set fuel injector barrel valves. Adjustable regulator provides accurate readings with varying air supply. Includes stainless hi-tech shock proof gauges, tested and matched to 1/4 PSI. Black anodized manifold body. For use in applications where 14mm spark plugs are utilized.