Drivetrain› Differentials and Rear-End Components

Zumbrota Drivetrain

Ring & Pinion Gear Set 4.56 Ratio, Thick

$469.37

SKU: ZG D44HD-456

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Overview

The USA Standard replacement Ring & Pinion gear set is designed for the Dana 44HD differential. This set features a 4.56 ratio and is intended for the rear, thick position.

USA Standard Gear ring and pinion sets are built to exceed OEM specifications and undergo rigorous in-house quality evaluation for dimensional, material, and fitment accuracy. The ZG D44HD-456 is a direct replacement for the Dana 44HD.
Show original supplier description
This specific gear set offers a 4.56 ratio, making it suitable for applications requiring enhanced torque and acceleration, particularly for the rear axle in a thick-mount configuration. Each set undergoes stringent in-house quality control processes, including dimensional, material, and fitment testing, to ensure reliability and performance. This rigorous evaluation guarantees that the gears meet high standards before reaching the customer. This ring and pinion set is a direct replacement component, simplifying installation for technicians familiar with Dana 44HD differentials. While specific vehicle fitment details are not listed in the provided text, the product is explicitly designed for the Dana 44HD axle. Customers are encouraged to consult the "Fitment" section or contact tech support for precise compatibility confirmation for their specific vehicle build. Buyers should be aware of the California Proposition 65 warning associated with this product, which indicates potential exposure to chemicals like arsenic, known to the state to cause cancer. More information is available at P65Warnings.ca.gov.

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

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandZumbrota Drivetrain
Part NumberZG D44HD-456
CategoryDrivetrain

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

Buy with Confidence

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.

View Full Return Policy

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.

View Full Shipping Policy