General description An individual diesel compression test adaptor (dummy glow plug) designed for use with Laser compression and cylinder leakage kits (Part Nos. 2596, 4510, and 5140). This adaptor is also compatible with many other common compression test kits, expanding its range of applications. It allows for connection to Fiat/GM engines equipped with M9 glow plugs, providing a quicker alternative to removing injectors for testing. Technical specifications Thread size: M9 x 1mm Equivalent to OEM: Y9003AS Compatibility and accessories Designed for use with Laser Part No. 2596 diesel engine compression kits Compatible with Part No. 4510 diesel compression test kit Compatible with Part No. 5140 cylinder leakage tester