A 7" (17.8 cm) diesel compression tester extension designed for use with the TU-15 Diesel Compression Tester to provide additional reach in cramped engine compartments. It utilizes male and female quick couplers to clear the valve train and access difficult-to-reach testing ports. This added length facilitates a direct connection when standard adapters are obstructed by engine components.

A 7" (17.8 cm) diesel compression tester extension designed for use with the TU-15 Diesel Compression Tester to provide additional reach in cramped engine compartments. It utilizes male and female quick couplers to clear the valve train and access difficult-to-reach testing ports. This added length facilitates a direct connection when standard adapters are obstructed by engine components.