QU50813U Used 1977-1991 GM 10 Bolt 1310 Series Pinion Yoke with Slinger

QU50813U Used 1977-1991 GM 10 Bolt 1310 Series Pinion Yoke with Slinger for Chevy and GMC Blazer, Jimmy, Suburban, 1/2 ton and 3/4 ton 4x4 trucks with GM 8-1/2" ring gear, 10 Bolt, beam type front axles. QU50813U also fits 1978 G20 Van and 1979-1981 C10/C15 1/2 ton, 10 Bolt, 8-1/2" ring gear rear axles. QU50813U is a used 30 spline Yoke that uses QU40768 U-Bolts to retain the u-joint instead of straps and bolts.

Need More Info? Use the handy Links below to access over 40 years of Dan's product and vehicle specific Tech Notes to easily get the information you need for your vehicle's repair, maintenance, or upgrade project!

Dan the Gear Man® Tech Notes:
U-Joint Specs
Verify U-Joint Size
GM 10 Bolt vs. Dana 44
8.5" Front/Rear
Lubricate
Matching Parts
Applications

Tech Note 1: U-Joint Specs
QU50813U accepts external snap ring u-joints made to Spicer 1310 series dimensional specifications. Cup diameter is 1-1/16", overall width of installed u-joint is 3-7/32". Matching u-joints are TK40720 or QU40784.

Tech Note 2: Verify U-Joint Size
General Motors used 8-1/2" 10 Bolt Rear axle in a number of different light duty vehicle types. Some years and models use different size u-joints. Before ordering this yoke for your rear axle, verify your u-joint size!

Tech Note 3: GM 10 Bolt vs. Dana 44
The 8.5" GM 10 Bolt beam type front axle was used in most 1977.5-1980 GM Blazer, Jimmy, Suburban plus 1/2 ton and 3/4 ton pickups. During those years, GM also used Dana 44 axles. The two axles are easy to tell apart by the cover. 10 Bolt Covers are fairly oval with only one straight edge. The Dana 44 cover is an irregular hexagon with six distinct flat edges. Dana 44 axles also have a 26 spline pinion stem.

Tech Note 4: 8.5" Front/Rear
GM 8.5" front and rear axles use the same pinion yoke, but different pinion seals.

Tech Note 5: Lubricate
Both the Seal Lip and Pinion Yoke hub must be lubricated with a film of clean grease to provide initial lubrication.

Tech Note 6: Matching Parts
Matching Parts for QU50813U Pinion Yoke:
QU40768 U-Bolt Kit for Universal Joint
QU10863 Pinion Nut
QU30003 Pinion Washer
QU30035 Crush Sleeve
QU30105 Pinion Seal for Front Axle
QU30106 Pinion Seal for Rear Axle
TK40720 Premium U-Joint with Cold-Forged Cross
QU40784 Greaseable U-Joint
Chevy & GMC Shop Manuals

Applications
Chevy and GMC:
K5 Blazer/Jimmy: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991
K10/K15/K1500 1/2 ton Suburban and Truck: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987
K20/K25/K2500 3/4 ton Suburban and Truck: 1977, 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987
V1500, V2500 Suburban: 1988, 1989, 1990, 1991
G20 Van with GM 10 Bolt Rear Axle: 1978
C10, C15 Truck with GM 10 Bolt Rear Axle: 1979, 1980, 1981