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Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

30 Spline Differential Locker

Name: 30 Spline Differential Locker
Brand: Zumbrota Drivetrain
SKU: YGLD44-4-30

$1,062.89

SKU: YGLD44-4-30

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

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Moderate — 2–4 hours

Overview

The Zumbrota Drivetrain YGLD44-4-30 is a differential locker replacement for Dana Spicer 44 axles with 30 spline axles and a 3.92 gear ratio or numerically higher. It features 8620 internals for enhanced strength and a patented internal design engineered to minimize common locker failures. This locker is assembled in the USA.

Show original supplier description

The Yukon Gear and Axle YGLD44-4-30 is a replacement locker designed for Dana Spicer 44 differentials, specifically for applications with 30 spline axles and a 3.92 gear ratio or numerically higher. Constructed with 8620 internals, this locker offers increased strength and durability for demanding off-road use. The unit is assembled in the USA. It is drilled for 7/16" ring gear bolts. If your application uses 3/8" bolts, you will need to purchase ten YSPBLT-027 spacers separately for proper installation.

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	YGLD44-4-30
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.

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