USA Standard Gear

Ring and Pinion Gear Set 3.73:1

$429.89

SKU: ZG GMBOP-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 GMBOP-373 is a ring and pinion gear set engineered for 8.2-inch GM axles found in various Buick, Oldsmobile, and Pontiac vehicles. This set features a 3.73:1 gear ratio, intended to provide a reliable OE replacement for a range of classic GM models. Each product undergoes stringent in-house testing to ensure it passes dimensional, material, and fitment standards. This commitment to quality is backed by a one-year warranty against manufacturing defects, offering buyers peace of mind. The specific application list includes a variety of Buick, Oldsmobile, and Pontiac models from the mid-1960s to early 1970s, all utilizing the GM 8.2-inch axle. The product requires 10 cover bolts for installation and features a 27-tooth ring gear, with axle seals not included.

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 GMBOP-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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