Does anyone know the size of the socket for a 2003 Detroit 12.7 DDEC 4 bull gear? (The left hand threaded nut that holds it in) I’ve tried 3 1/4 like others have told me but it doesn’t fit
Detroit 12.7 bull gear
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Detroit series60, Dec 24, 2020.