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Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Grizzly Locker

Name: Grizzly Locker
Brand: Zumbrota Drivetrain
SKU: YGLGM11.5-38

$1,064.66

SKU: YGLGM11.5-38

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Overview

The Yukon Grizzly Locker is a differential designed for GM and Chrysler 11.5" axles with 38 spline axles. It features a patented internal design to reduce common locker failures and 8620 internals for added strength. This locker is assembled in the USA.

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The Yukon Grizzly Locker is a robust differential designed for GM and Chrysler 11.5-inch axles featuring 38-spline axles. Its patented internal design is engineered to significantly reduce common locker failures, while the use of 8620 internals provides enhanced strength and durability for demanding applications. This locker is assembled in the USA, ensuring quality manufacturing. For installation, please note that factory spindles will require modification. Specifically, they will need to be bored out using tool part number YT H32 to properly accommodate the 38-spline axles that this locker utilizes.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	Zumbrota Drivetrain
Part Number	YGLGM11.5-38
Category	Drivetrain

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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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