Zumbrota Drivetrain

4.56 Ratio 10.5-Inch Ring Gear Differential Ring and Pinion Gear Set

$891.89

SKU: ZGK2121

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The Zumbrota Drivetrain ZGK2121 is a comprehensive differential repair package, combining a USA Standard ring and pinion gear set with a master installation kit. This kit is specifically designed for applications utilizing a 14-bolt rear cover and a 12-bolt ring gear, featuring a 4.56 gear ratio and a 10.5-inch ring gear diameter. Each Quick Kit, like the ZGK2121, is engineered for efficiency, bundling all the essential components needed for a differential repair. The primary benefit of these kits is the convenience of a single part number that contains everything required to get vehicles back on the road quickly and affordably. The ZGK2121 is compatible with carrier cases designed to accommodate gear ratios of 4.10 and lower. This product offers a streamlined approach to differential maintenance and repair, saving both time and money by consolidating necessary parts into one package.

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 NumberZGK2121
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.

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