General description When replacing glow plugs, it is essential to clean the glow plug aperture to ensure the new glow plug can effectively transfer its heat to the engine's incoming air. This tool is designed to clear carbon deposits prior to fitting glow plugs, ensuring their effective operation. Technical specifications Compatible with 8mm and 9mm glow plugs Cleaner tip designed for 8.9mm glow plugs with 5mm diameter tips Compatibility and accessories M9 glow plugs are specific to Alfa Romeo, Fiat, Saab, and Vauxhall engines Other information Made in Sheffield