Mustang National Differential Pinion Seal 6.75"/7.25"/8" Ring Gear 1965-1974
National
Part Number: NATIONAL 8181NA
National Differential Pinion Seal for 1965-1974 Mustangs with a 6.75", 7.25" or 8" Ring Gear.
The pinion seal is responsible for sealing in the gear oil at the front of the differential where the driveshaft connects. National seals are manufactured to meet or exceed OE specifications.
Measurements:
-Shaft Size: 1.812 in. (46.02 mm.)
-Housing Bore: 2.623 in. (66.62 mm.)
-Outside Diameter: 2.627 in. (66.73 mm.)
-Flange Outside Diameter: 2.94 in. (74.68 mm.)
-Width: 0.455 in. (11.56 mm.)