USA Standard Gear

8.8" Reverse Rotation Ring and Pinion Gear Set, 3.73 Ratio

$376.89

SKU: ZG F8.8R-373R

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

Description

The USA Standard Gear ZG F8.8R-373R is a ring and pinion gear set engineered for Ford 8.8-inch reverse rotation differentials, featuring a 3.73 ratio. This set includes a 30-spline pinion and requires 10 ring gear bolts, with an 8.80-inch ring gear diameter. USA Standard Gear provides a comprehensive selection of ring and pinion sets suitable for numerous common and specialized applications, aiming to enhance installer confidence. This gear set is designed to fit specific Ford and Lincoln vehicles, including the Lincoln Navigator (1998-2014), Lincoln Mark LT (2006-2008), Ford F-250 (1997-1999), Ford F-150 (1997-2017), and Ford Expedition (1997-2014). Proper installation of ring and pinion gears is crucial and may require specialized tools and knowledge, as well as potential adjustments to backlash and gear patterns to ensure optimal performance and durability.

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

BrandUSA Standard Gear
Part NumberZG F8.8R-373R
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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