1978 GMC P15 Differential Pinion Seals
Save up to 40% on original replacement 1978 GMC P15 Differential Pinion Seals. Navigate our online catalogue to find Differential Pinion Seals and other parts designed specifically to fit a 1978 GMC P15.







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
$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 Outer
$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