Ring Gear - Pinion

Application:
EXPEDITION 18-24 rear axle, 8.8" ring gear, 3.31 ratio
EXPEDITION 25 rear axle, 8.8" ring gear
FORD F150 PICKUP 15-17 Rear Axle; 8.8" ring gear, 3.31 ratio
FORD F150 PICKUP 18-25 rear axle, 8.8" ring gear, 3.31 ratio
MUSTANG 15-20 (8.8" ring gear), 3.31 ratio
MUSTANG 21-23 3.31 ratio