Flex Drive Compression Tester

The Star Products TU-7 Flex Drive Compression Tester is a must-have tool for any automotive enthusiast or professional mechanic. This tester is designed to test the compression of gasoline engines, and it can be used on both domestic and foreign cars and trucks. The TU-7 comes with a variety of adapters, including 14mm and 18mm adapters, as well as a 14mm long reach adapter. This allows you to test a wide range of engines, including small engines.

The TU-7 is easy to use. Simply screw the tester into the spark plug hole and turn the handle until the piston reaches the top of the cylinder. The gauge will then display the compression reading. The TU-7 also features a side release valve, which allows you to re-test the compression without removing the tester.

The TU-7 is a durable and reliable tool that will provide you with accurate compression readings for years to come. It is backed by a one-year warranty.

Key Features

Tests domestic & foreign cars and trucks with gasoline engines.
Has 14mm & 18mm adapters attached to end of 12" hose. Has separate 14mm long reach adapter that can be screwed onto end of hose adapter by hand.
By adding our 10mm & 12mm adapters (available separately), it is the ideal tester for small engines.
Tester can be screwed into spark plug hole by hand with just a few turns for testing.
Side release valve allows multiple re-testing without removing tester.
The 2-1/4" gauge has a dual scale dial with ranges from 0-300 PSI and 0-21 bar.