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SKU:
NLT2S01204
Ships for free in 2–4 business days.
GM 8.5-Inch 10-Bolt Rear Limited-Slip Differential & Ring/Pinion Kit – 28-Spline, 3.73 Ratio
$853.39
In Stock
$853.39
Sale price
$853.39
Regular price
This rear limited-slip differential kit is designed for GM 8.5-inch 10-bolt rear axles with 28-spline shafts and a 3.73:1 final-drive ratio. Axle configuration and carrier break must be verified before installation.
Estimated delivery between
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- GM 8.5-inch 10-bolt rear axle — 28-spline shafts, 3.73 gear ratio
- Chevrolet and GMC rear-drive axle builds using matching 8.5-inch carrier/gearset
Important Fitment Note: Confirm 8.5-inch versus 8.625-inch axle version, spline count, carrier series, pinion depth, bearing sizes and 3.73 gear ratio. Correct differential setup is required; model names alone are insufficient.
Product Overview
The carrier distributes torque between the axle shafts while the ring-and-pinion establishes the final drive ratio.
A worn open differential or damaged gear set can be upgraded or rebuilt with matching limited-slip components, provided the axle housing is suitable.
Confirm 8.5-inch versus 8.625-inch axle version, spline count, carrier series, pinion depth, bearing sizes and 3.73 gear ratio. Correct differential setup is required; model names alone are insufficient.
Key Features & Performance
- Part & Application: GM 8.5-Inch 10-Bolt Rear Differential Limited-Slip Carrier & Ring/Pinion Kit — 28 Spline, 3.73 Ratio. GM 8.5-inch 10-bolt rear axle — 28-spline shafts, 3.73 gear ratio
- Part Identification: Use the original assembly dimensions and equipment identification
- Package Contents: Limited-slip carrier/locking hardware and matched ring-and-pinion parts only if shown; verify the complete kit before purchase.
- Fitment Priority: Confirm original part, configuration, and mounting features before installation.
Specifications
- Product: GM 8.5-Inch 10-Bolt Rear Differential Limited-Slip Carrier & Ring/Pinion Kit — 28 Spline, 3.73 Ratio
- Brand: Northline Parts aftermarket replacement or accessory (unless otherwise stated by the original listing)
- Northline Parts SKU: NLT2S01204
- Important Details: 8.5-inch GM 10-bolt axle; 28 spline; 3.73 ratio
Replaces / Cross-References
No independently confirmed OEM interchange number has been established for this listing. Identify the replacement using the model information, measurements and original component before ordering.
What Is Included
Limited-slip carrier/locking hardware and matched ring-and-pinion parts only if shown; verify the complete kit before purchase.
Installation & Fitment Notes
Confirm 8.5-inch versus 8.625-inch axle version, spline count, carrier series, pinion depth, bearing sizes and 3.73 gear ratio. Correct differential setup is required; model names alone are insufficient.
Follow the service procedure for the specific equipment or vehicle. Compare the replacement with the original part before installation; professional installation is recommended for steering, braking, suspension, electrical and drivetrain components.
Frequently Asked Questions
Is this an OEM part?
No. This listing is for an aftermarket replacement or accessory unless the product is specifically described as genuine. Manufacturer names and OE numbers are provided for fitment identification.
How do I know whether it will fit?
Confirm 8.5-inch versus 8.625-inch axle version, spline count, carrier series, pinion depth, bearing sizes and 3.73 gear ratio. Correct differential setup is required; model names alone are insufficient.
When should this part be replaced?
A worn open differential or damaged gear set can be upgraded or rebuilt with matching limited-slip components, provided the axle housing is suitable.
What is included?
Limited-slip carrier/locking hardware and matched ring-and-pinion parts only if shown; verify the complete kit before purchase.
Part Summary
Part: GM 8.5-Inch 10-Bolt Rear Differential Limited-Slip Carrier & Ring/Pinion Kit — 28 Spline, 3.73 Ratio
Applications: GM 8.5-inch 10-bolt rear axle — 28-spline shafts, 3.73 gear ratio; Chevrolet and GMC rear-drive axle builds using matching 8.5-inch carrier/gearset
Reference Numbers: Not independently verified
Purpose: The carrier distributes torque between the axle shafts while the ring-and-pinion establishes the final drive ratio.
Northline Parts SKU: NLT2S01204
Keywords: GM 8.5-Inch 10-Bolt Rear Differential Limited-Slip Carrier & Ring/Pinion Kit — 28 Spline, 3.73 Ratio, NLT2S01204, Northline Parts, GM 8.5-inch 10-bolt rear axle, Chevrolet and GMC rear-drive axle builds using matching 8.5-inch carrier/gearset.