Chevrolet, GMC (4WD) Differential - Rear - Zumbrota Drivetrain - RAA435-1249BE

Rear Axle Assembly
RAA435-1249BE
Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts
Reman Axle Assy, GM 10 Bolt 8.5 In., 2.73 Ratio, w/o Posi Traction
8.5" AXLE ASSY '81-'88 GM BLAZER/JIMMY and K10, 4WD, 2.73 OPEN 28spl
Zumbrota Drivetrain Axle Assemblies are rebuilt to the highest quality standards of precision and reliability. Each Axle assembly is thoroughly inspected for straightness, cracks and surface wear. All internal components are fully inspected and tested including ring and pinions, internal gears, clutches and carriers. All bearings and seals are replaced. Gears are fully inspected for optimal tooth contact patterns and correct rolling torque using inch pound measurements for precise setup and longevity. Correct gear backlash is set to ensure proper gear lubrication and quiet operation. Axle tubes are inspected to ensure OEM standards of straightness. Zumbrota uses an exclusive hydro-blast rinse and sandblasting procedure on internal and external parts, followed by a proprietary shot-enticed deep cleaning, setting the standard for Axle assembly remanufacturing.
Correct rolling torque established using inch pound measurement’s for precision setup and longevity
All housings are cleaned utilizing our state of the art hydro blasting and rinsing process. This process is what brings all cases back to the OEM finish.
100% replacement of bearings, seals, crush sleeves, pinion nuts and shims.
100% inspection of all internal parts, including Ring and Pinion’s, Internal Gears, Clutch’s and Carrier’s
All housings are tested for surface wear and cracks.
All tubes are inspected to ensure they are straightened to OEM specifications.
Correct rolling torque established using inch pound measurement’s for precision setup and longevity
All housings are cleaned utilizing our state of the art hydro blasting and rinsing process. This process is what brings all cases back to the OEM finish.
100% replacement of bearings, seals, crush sleeves, pinion nuts and shims.
100% inspection of all internal parts, including Ring & Pinion’s, Internal Gears, Clutch’s & Carrier’s
All housings are tested for surface wear and cracks.
All tubes are inspected to ensure they are straightened to OEM specifications.
Axle Type: Semi Floating
California Proposition 65: WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.
Cover Included: Yes
Fluid Included: No
Gear Ratio: 2.73

Detailed Fitment Results
Year Make Model Drive Type Fitment Notes 1981 Chevrolet K10 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1981 Chevrolet K10 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1981 GMC K1500 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1981 GMC K1500 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 Chevrolet K5 Blazer 4WD Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 Chevrolet K10 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 Chevrolet K10 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 GMC K1500 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 GMC K1500 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1982 GMC Jimmy 4WD Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 Chevrolet K5 Blazer 4WD Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 Chevrolet K10 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 Chevrolet K10 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 GMC K1500 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 GMC K1500 Suburban Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1983 GMC Jimmy 4WD Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1984 Chevrolet K5 Blazer 4WD Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 1984 Chevrolet K10 Ratio: 2.73; GM 10 Bolt 8.5 Inch Ring Gear, 28 Spline Axles, Ratio Option GU2, Without Posi Tr…