OEMTOOLS 37138 Compression Tester Gauge Set

The OEMTOOLS Compression Tester Gauge Set tests compression 0-300 psi on 14 mm and 18 mm spark plug ports (engine compression) and determines engine mechanical condition. Features a flexible rubber hose extension.

• Test Compression 0-300 PSI on 14 mm and 18 mm Spark Plug Ports
• 12" Flexible Rubber Hose Extension
• 2-Step Adapter 14 mm and 18 mm