Oni Tools Fuel Injection Pump Rotaring Tool is a direct replacement for OEM part numbers T83T9000C, 303228 and OTC7461. Applications for this specialty tool include for Ford Navistar 6.9L & 7.3L diesel engines found in F250 and F350. Our tool was designed to work on Stanadyne rotary fuel pumps for International 6.9 Liters and 7.3 Liter engines. This tool securely grips the front of the fuel injection pump so you can rotate it while fine tuning the system. Maximum fuel economy requires precise injector timing. Oni Tools ensures quality automotive products and stands behind top of the line manufacturing. We guarantee our products to last and offer support for our mechanics along the way.