FITS Chevy GMC GM 8.6" Posi Unit - 30 Spline Limited-Slip Locker Eaton-Style

Limited-Slip Posi Unit for Chevy GMC GM 8.6"

This 30 spline limited-slip posi unit is an Eaton-style differential carrier that fits GM 8.6 inch rear axles, delivering consistent traction to both rear wheels.

Overview

This 30 spline posi unit is a limited-slip differential carrier built for GM 8.6 inch rear axles. It replaces an open carrier to send torque to both rear wheels for better traction. Ideal for Chevy and GMC truck owners rebuilding a rear end or upgrading an open differential.

Built For Performance

• 30 spline side gears to match common GM 8.6 inch axle shafts
• Eaton-style limited-slip design for balanced torque distribution
• Clutch-type posi operation engages smoothly under load
• Direct replacement fit for GM 8.6 inch 10-bolt carriers
• Steel carrier construction for durability under drivetrain stress

Fits These Machines

• for Chevy Silverado 1500 with GM 8.6 inch rear axle
• for GMC Sierra 1500 with GM 8.6 inch rear axle
• for Chevy Tahoe with GM 8.6 inch rear axle
• for GMC Yukon with GM 8.6 inch rear axle
• for Chevy Suburban with GM 8.6 inch rear axle

On-The-Job Use

• Rear axle rebuilds and differential carrier replacements
• Towing and hauling where extra rear traction is needed
• Daily drivers that see wet or loose surface conditions
• Light off-road and work truck applications

Specs At A Glance

Good To Know

Q: Does this posi unit fit any GM 8.6 inch rear axle? A: It is built for GM 8.6 inch 10-bolt rear axles with 30 spline axle shafts. Confirm your axle spline count before ordering.

Q: Is this an original Eaton product? A: No, this is an Eaton-style limited-slip posi unit made as a replacement for GM 8.6 inch axles. It is not an original brand part.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.