Chevrolet, GMC Differential - Rear - Zumbrota Drivetrain - RAA435-277A

Rear Axle Assembly
RAA435-277A
Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts
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Reman 11.5" Rear Diff Assembly, Silverado/Sierra 3500, DRW, PU, 3.73 Ratio, Open
Remanufactured 11.5" Rear Differential Axle Assembly, GM Silverado and Sierra 3500, DRW, Non-Cab Chassis, 3.73 Ratio, Open
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.
All tubes are inspected to ensure they are straightened to OEM specifications.
All housings are tested for surface wear and cracks.
100% inspection of all internal parts, including Ring and Pinion’s, Internal Gears, Clutch’s and Carrier’s
100% replacement of bearings, seals, crush sleeves, pinion nuts and shims.
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.
Correct rolling torque established using inch pound measurement’s for precision setup and longevity
All tubes are inspected to ensure they are straightened to OEM specifications.
All housings are tested for surface wear and cracks.
100% inspection of all internal parts, including Ring & Pinion’s, Internal Gears, Clutch’s & Carrier’s
100% replacement of bearings, seals, crush sleeves, pinion nuts and shims.
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.
Correct rolling torque established using inch pound measurement’s for precision setup and longevity
Axle Type: Full 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 Capacity: 3.17
Fluid Included: No
Gear Ratio: 3.73
Grade Type: Regular
Housing Cover Bolt Quantity: 14
Ring Gear Diameter: 11.5

Detailed Fitment Results
Year Make Model Body Type Fitment Notes 2011 Chevrolet Silverado 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2011 GMC Sierra 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2012 Chevrolet Silverado 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2012 GMC Sierra 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2013 Chevrolet Silverado 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2013 GMC Sierra 3500 HD Crew Cab Pickup
Standard Cab Pickup
Extended Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2014 Chevrolet Silverado 3500 HD Crew Cab Pickup
Standard Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts 2014 GMC Sierra 3500 HD Crew Cab Pickup
Standard Cab Pickup Ratio: 3.73; AAM 11.5 Inch Ring Gear, Dual Rear Wheels, Ratio Option GT4, Without Widetrack Option GTY, Without Posi Traction, Does Not Include Hubs, Brakes, Backing Plates, Or Axle Shafts