Oni Tools Engine Barring/Turning Socket Wrench Tool for Caterpillar(CAT),EUI/MUI & Mack Engines. Fits 3176/3196/3200/3208/3300/3400/3406/3500/3508/3512 Series, C9, C10, C12, C13, C15 and C16 & E-7, E-7 ETEC. Direct replacement to OEM J-38587-A,Caterpillar 9S9082 0508477 and OTC6749. Designed to manually turn the engine when servicing. Works great, by allowing you to pin the flywheel without the help of another person. The perfect hand tool for turning over the engine, makes adjusting injectors and valve lash faster and easier. The tool's dimensions are 8 Splines x 1.725�(43.815mm); 1/2" Square Drive. Manufactured from high quality 42CrMo Steel to ensure great tolerance and resistance to corrosion and rust.
