1985 GMC C2500 | Base, High Sierra, Sierra, Sierra Classic, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 6 Cyl 4.8 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS, 8 Cyl 7.4 L GAS
Notes: w/Large Drive End Opening;w/Small Drive End Opening Prevents Debris from Entering Starter (for Off-Road Use);w/115mm (4 1/2") Dia Starter Case; w/Large Drive End