1978 GMC C15 Differential Pinion Seals
Save up to 40% on original replacement 1978 GMC C15 Differential Pinion Seals. Navigate our online catalogue to find Differential Pinion Seals and other parts designed specifically to fit a 1978 GMC C15.







Differential Pinion Seal - Rear
$10.22
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
1.739 Shaft Diameter 2.812 Bore Diameter 2.816 Outside Diameter Seal 0.594 Width with 8.875 Ring Gear Speedi-Sleeve # 99170
1.739 Shaft Diameter 2.812 Bore Diameter 2.816 Outside Diameter Seal 0.594 Width with 8.875 Ring Gear Speedi-Sleeve # 99170






Differential Pinion Seal - Rear
$7.40
Limited Stock
Ships: Same or Next Business Day
Pick-Up: Same Business Day (Order before 12pm)
Pick-Up: Same Business Day (Order before 12pm)
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
1.938 Shaft Diameter 2.762 Bore Diameter 2.766 Outside Diameter Seal 0.500 Width with 8.5 Ring Gear
1.938 Shaft Diameter 2.762 Bore Diameter 2.766 Outside Diameter Seal 0.500 Width with 8.5 Ring Gear







Differential Pinion Seal - Rear
$17.24
$15.47
10+ In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
8.5 In. Ring Gear
8.5 In. Ring Gear



Differential Pinion Seal - Rear
$23.48
$21.78
10+ In Stock
Ships: Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Pick-Up: Ready in 1 Hour Monday Sep. 22nd
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
8.88 in. Ring Gear
8.88 in. Ring Gear



Differential Pinion Seal - Rear
$12.80
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
with 8.5 (in) or 8.75 (in) Ring Gear with GMC Axle
with 8.5 (in) or 8.75 (in) Ring Gear with GMC Axle



Differential Pinion Seal - Rear Outer
$16.23
Call For Availability
Condition: New
Required Per Vehicle: 1
Required Per Vehicle: 1
Vehicle Fitment Notes:
with 8.875 (in) Ring Gear with GMC Differential
with 8.875 (in) Ring Gear with GMC Differential