84757389 Rear Steel Drive Axle Shaft — 33-Spline, 40-5/16" | 2020–2025 Chevy Silverado 3500 HD / GMC Sierra 3500 HD
SKU
447-11312
Price
$250.00
Core Charge
$0.00
Description
Features and Benefits
Newly manufactured steel drive axle shaft — not remanufactured — providing new-part reliability and eliminating the wear variables of core-based alternatives.
33-spline inboard engagement and 40-5/16" inner shaft length match OE specifications exactly for direct bolt-in fitment on 2020-2025 Silverado 3500 HD and Sierra 3500 HD.
Rust-resistant coating applied to shaft surfaces protects against corrosion in road salt, mud, and moisture environments common in heavy-duty truck operation.
Manufactured in the United States — supporting domestic production and meeting the quality expectations of professional technicians and fleet operators.
US Powertrain engineers review OE designs prior to production and incorporate corrections for known design deficiencies, delivering a shaft engineered to outlast the original.
Fits both Chevrolet Silverado 3500 HD and GMC Sierra 3500 HD platforms (2020-2025), providing broad application coverage from a single part number.
Brand: US Powertrain
2020-2023 Chevrolet Silverado 3500 HD
2020-2023 GMC Sierra 3500 HD
Axle Shaft
New Rear Axle Shaft 2020-2023 Sierra/Silverado 3500 33 Spline 40 5/16"
Direct Replacement for Proper Fit
Inboard Spline Quantity: 33
Inner Shaft Length: 40 5/16"
Shaft Material: Steel
Interchange:
Applications:
2020-2023 Chevrolet Silverado 3500 HD
2020-2023 GMC Sierra 3500 HD
Axle Shaft
New Rear Axle Shaft 2020-2023 Sierra/Silverado 3500 33 Spline 40 5/16"
Direct Replacement for Proper Fit
Inboard Spline Quantity: 33
Inner Shaft Length: 40 5/16"
Shaft Material: Steel
Interchange:
- General Motors: 84757389
Applications:
- 2020-2023 Chevrolet Silverado 3500 HD - PartType: Drive Axle Shaft - Position: Rear
- 2020-2023 GMC Sierra 3500 HD - PartType: Drive Axle Shaft - Position: Rear
Installation
Installation Instructions
INS_FORM.docx
(171.9 KB)
Core Charge
Core Charge
$0.00
Dimensions
Dimensions
42 × 8 × 8 in
Weight
25 lb
Fitment
Vehicle Fitment
2020 Chevrolet Silverado 3500 HD
2021 Chevrolet Silverado 3500 HD
2022 Chevrolet Silverado 3500 HD
2023 Chevrolet Silverado 3500 HD
2020 GMC Sierra 3500 HD
2021 GMC Sierra 3500 HD
2022 GMC Sierra 3500 HD
2023 GMC Sierra 3500 HD
2024 GMC Sierra 3500 HD
2024 Chevrolet Silverado 3500 HD
2025 Chevrolet Silverado 3500 HD
2025 GMC Sierra 3500 HD
Fitment Qualifiers
with 33 Splines
Application Summary
2020-2025 Chevrolet Silverado 3500 HD - Rear
2020-2025 GMC Sierra 3500 HD - Rear
Specifications
Category
Driveline and Axles
Axle Shaft
Part Type
Brand
US Powertrain
Position
ABS Tone Ring Included
No
Axle Nut Included
No
Axle Shaft Seal Included
No
Bearing(s) Included
No
Brake Hardware Included
No
CV Joints Included
No
Grade Type
Regular
Inboard Spline Quantity
33
Inner Shaft Length
40 5/16"
Prop 65 - Long Label
This product may contain a chemical known to the state of California to cause cancer or birth defects. www.p65warnings.ca.gov
Prop 65 - Short Label
WARNING: Cancer – www.p65warnings.ca.gov
Prop 65 Y/N
Yes
Rust Resistant Coating
YES
Shaft Material
Steel
Wheel Nuts Included
No
