Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Master Overhaul Kit, 30 Spline Rear Differential

$246.27

SKU: ZK D44-REAR

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Zumbrota Drivetrain ZK D44-REAR is a master overhaul kit designed as a replacement for Dana 44 rear differentials. This kit provides all the necessary components for a differential overhaul in one part number, saving time and money. It features Koyo bearings and races and is designed for 30 spline axles.
Show original supplier description
The USA Standard Gear Master Overhaul Kit, model ZK D44-REAR, is engineered to provide all essential components for a complete differential overhaul for Dana Spicer 44 rear axles. This comprehensive kit streamlines the process by consolidating all needed parts into a single part number, offering both cost and time savings for your specific installation. Included in the master overhaul kit are carrier bearings and races, pinion bearings and races, a pinion seal, a complete shim kit, ring gear bolts, a pinion nut, oil baffles and slingers, thread locker, and marking compound with a brush and gasket, ensuring you have everything needed for a thorough rebuild.

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

BrandZumbrota Drivetrain
Part NumberZK D44-REAR
CategoryDrivetrain
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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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