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Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Grizzly Locker, Dana 30, 27 Spline

Name: Grizzly Locker, Dana 30, 27 Spline
Brand: Zumbrota Drivetrain
SKU: YGLD30-4-27

$852.89

SKU: YGLD30-4-27

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Overview

The Yukon Grizzly locker is a mechanical locking differential designed for Dana Spicer 30 axles with 27 spline axles and a 3.73 or higher gear ratio. It features a patented internal design to reduce common failures and 8620 internals for added strength. This locker is assembled in the USA and is double drilled for both 3/8" & 7/16" ring gear bolts.

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This unit provides 100% power to both tires, ensuring maximum grip, while its design still allows for reliable disengagement when navigating turns. Constructed with durable 8620 internals for superior strength, the Grizzly Locker boasts a patented internal design that significantly reduces common locker failures. It is specifically made to fit Dana Spicer 30 axles featuring 27 spline axles and is compatible only with gear ratios of 3.73 and up. The product is proudly assembled in the USA and is double drilled to accommodate both 3/8" and 7/16" ring gear bolts for versatile installation. This differential locker is an ideal upgrade for those seeking improved performance and reliability in demanding driving conditions. Its ability to lock both axles ensures consistent power delivery, crucial for off-road adventures or competitive driving scenarios.

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	YGLD30-4-27
Category	Drivetrain

Videos

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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.

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