USA Standard Gear

3.73 Ring and Pinion Gear Set

$367.89

SKU: ZG GM14T-373

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

Description

The USA Standard Gear ZG GM14T-373 is a high-performance ring and pinion gear set engineered to upgrade your vehicle's differential. Designed for 10.5-inch GM 14 Bolt Truck axles, this set features a 3.73 gear ratio and a 10.50-inch ring gear diameter, with 12 ring gear bolts and a 30-spline pinion. These gears are an ideal solution for restoring performance lost due to oversized tires or for enhancing capabilities in towing, off-roading, and racing applications. By correcting acceleration losses from larger tires or by providing a higher ratio for towing and racing, they help your engine operate more efficiently, put more power to the ground, and reduce stress on the transmission. The product is backed by a one-year warranty against manufacturer defects, offering confidence in its quality and longevity. Installation of new gears typically requires common hand tools along with a hydraulic press and dial indicator. It is also recommended to use a master overhaul kit, which includes essential components like new bearings, seals, shims, and a pinion crush sleeve to ensure quiet and reliable operation.

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 GM14T-373
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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