Spartan locker for GM 8.5IN with 28 spline axlesIN includes heavy-duty cross pin shaft.

Name: Spartan locker for GM 8.5IN with 28 spline axlesIN includes heavy-duty cross pin shaft.
Brand: USA Standard (Yukon)
SKU: U018 SL GM8.5-28
Price: 661.89 USD
Availability: InStock

$661.89

SKU: U018 SL GM8.5-28

In Stock

Ships by Jun 19

Free Shipping

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Description

The USA Standard Spartan Locker (SL GM8.5-28) is a lunchbox-style automatic mechanical locker designed for GM 8.5-inch differentials with 28-spline axles. It provides 100% lockup traction, is made from 9310 steel for durability, and features a spring and pin design for easy installation.

Fitment

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Specifications

Brand	USA Standard (Yukon)
Part Number	U018 SL GM8.5-28

Videos

How-to Install a Spartan Locker in a GM 8.5 10-Bolt (No Gear Reset Needed)

Spartan Locker Installation Walkthrough

USA Standard Gear Spartan Locker Unboxing

USA Standard Unboxing - Spartan Locker

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Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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