What is the advantage of a 30 spline pinion?

A 30 spline pinion offers more contact points between the pinion and the ring gear compared to a lower spline count. This increased surface area helps distribute load more effectively, leading to a stronger and more durable connection for your drivetrain.

What does 'thin' style gear set mean for the GM 12 Bolt?

The 'thin' designation refers to the specific design of the ring gear and its mounting pattern for the GM 12 Bolt differential. This set is intended for applications that originally came with or have been modified to accept this particular style of gear, often associated with 4.10 and numerically higher ratios.

Does this gear set come with installation hardware?

This ring and pinion gear set includes the gears themselves. Installation typically requires additional components such as bearings, seals, and shims, which are usually sold separately. Always refer to the manufacturer's installation instructions for a complete list of required parts.

Yukon Gear USA Standard Ring & Pinion Gear Set For GM 12 Bolt Car in a 3.73 Ratio

Specifications

Brand: Yukon Gear & Axle
Part #: ZG GM12P-373-4
UPC: 883584361688

Yukon Gear USA Standard Ring & Pinion Gear Set For GM 12 Bolt Car in a 3.73 Ratio

Name: Yukon Gear USA Standard Ring & Pinion Gear Set For GM 12 Bolt Car in a 3.73 Ratio
Brand: Yukon Gear & Axle
Price: 376.89 USD
Availability: InStock

$376.89

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Yukon Gear & Axle 3.73 ratio ring and pinion gear set for GM 12 Bolt cars. Features a 30 spline pinion for improved durability.

Key Features

Fits 1964-1972 Buick Wildcat, Chevrolet Bel Air, Biscayne, Camaro, Caprice, Chevelle, Chevy II, El Camino, Impala, Monte Carlo, Nova, and Pontiac Firebird, GTO.
Features a 3.73 gear ratio for a balance of acceleration and cruising.
Includes a 30 spline pinion for a strong connection.
Designed to exceed OEM specifications for improved performance.
Undergoes rigorous in-house quality evaluation for dimensional, material, and fitment testing.
This is a "thin" style gear set for the GM 12 Bolt differential, compatible with 4.10 and numerically higher ratios.

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Will this fit your vehicle?

Product Details

The 30 spline pinion on this Yukon Gear & Axle USA Standard Ring & Pinion set is a notable detail, offering a stronger connection for the driveshaft. This set is designed for the GM 12 Bolt car differential and comes in a 3.73 ratio, which is a popular choice for a good balance between acceleration and highway cruising for many classic muscle cars and trucks.

USA Standard Gear ring and pinion sets are built to go beyond what the original equipment specifications call for. Each set undergoes thorough in-house quality checks to make sure they meet strict standards for dimensions, materials, and how well they fit. This attention to detail means you're getting a well-built gear set that's ready to perform. This specific set is for the "thin" style GM 12 Bolt, designed to fit with 4.10 and numerically higher ratios.

This gear set fits a wide range of GM vehicles from the mid-60s to early-70s, including popular models like the Chevrolet Chevelle, Impala, and Pontiac Firebird. It's a solid option if you're looking to replace worn-out gears or change your vehicle's final drive ratio for improved performance.