Zumbrota Drivetrain

3.73 Ratio Rear Differential Install Kit

$2,197.89

SKU: YGK057

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

Description

The Yukon Gear & Install Kit package YGK057 is a comprehensive differential and rear-end component designed for 2003-2011 Ram 2500 and 3500 trucks, featuring a 3.73 gear ratio. This kit comes from Yukon Gear and Axle and includes all necessary components for a differential upgrade. The package is tailored for Ram 2500 and 3500 models equipped with the 9.25" reverse or 11.5" rear axle. Technical notes highlight an important detail regarding the rear inner pinion bearing for the 11.5" axle. For applications from 2003 to mid-2011, the inner pinion bearing race number HM807010 corresponds to a 4.125" outside diameter. However, for mid-2011 through 2013 rear applications, the inner race number NP673386 indicates a 4.375" outside diameter. It is crucial to verify the specific bearing race in your vehicle to ensure correct fitment.

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 NumberYGK057
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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