USA Standard Gear

3.73 Ratio Ring and Pinion Gear Set with Install Kit

$526.89

SKU: ZGK2007

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

Description

The USA Standard Gear ZGK2007 "Quick Kit" provides a comprehensive solution for re-gearing an axle. Designed for axles with an 8.5" ring gear diameter, it is compatible with applications requiring a 10-bolt rear cover and a 10-bolt ring gear. This kit specifically accommodates carrier bearings with a 1.781" inside diameter and a 2.891" outside diameter. The inclusion of axle bearings and seals ensures all critical components are provided in a single part number, offering a convenient one-stop shopping experience for common differential repairs at an affordable price. USA Standard Gear maintains rigorous in-house quality testing to ensure its gears meet dimensional, material, and fitment standards, making them suitable for everyday driving, trail running, and spirited use.

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

BrandUSA Standard Gear
Part NumberZGK2007
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

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.

View Full Shipping Policy