USA Standard Gear

3.73 Thin Ring & Pinion Gear Set with Master Install Kit

$2,041.89

SKU: ZGK2166

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

Description

The USA Standard Gear ZGK2166 is a comprehensive differential ring and pinion gear set and master install kit package. This kit is engineered for durability and performance, featuring a 3.73 thin ring and pinion gear set compatible with axles that have a 10-bolt rear cover and a 12-bolt ring gear. The package includes a Yukon Dura Grip clutch-style limited slip differential (LSD), known for its rebuildable design. This ensures that vehicles can be quickly put back on the road after installation. The ring gear diameter for this specific set is 11.25 inches, and it utilizes 35 spline components. This kit is suitable for various Ford F-350 models from 1988-1997 and Dodge Ram trucks from 1994-2002, including RAM 2500 and RAM 3500. The Master Install kit contains all the necessary small parts for a complete installation, offering an affordable and reliable option for drivetrain upgrades or repairs.

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 NumberZGK2166
CategoryDrivetrain

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

Call us, follow along, or come say hi.

(760) 282-4645 Instagram Google

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