Yukon YG GM8.5-308 Ring & Pinion Gear Set 3.08 Ratio for GM 8.5/8.6 Rear Axle

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Product Specification:

SKU:YUKYG GM8.5-308

MPN: YG GM8.5-308

UPC: 883584244929

Weight: 16.9 lb

Inventory: 2

Type: Final Drive Gears

Vehicle Fitment

1999-2018 Chevrolet Silverado 1500 (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
2007 Chevrolet Silverado 1500 Classic (GM 8.5" or 8.6" Rear Differential)
1999-2018 GMC Sierra 1500 (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
2007 GMC Sierra 1500 Classic (GM 8.5" or 8.6" Rear Differential)
1999-2018 Chevrolet Tahoe (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
1999-2018 GMC Yukon (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
1999-2014 Chevrolet Suburban 1500 (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
2000-2014 GMC Yukon XL 1500 (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
2002-2013 Chevrolet Avalanche 1500 (All Trims, RWD/4WD, GM 8.5" or 8.6" Rear Differential)
1999-2002 Cadillac Escalade (GM 8.5" or 8.6" Rear Differential)
2002-2013 Cadillac Escalade EXT (GM 8.5" or 8.6" Rear Differential)
2003-2014 Cadillac Escalade ESV (GM 8.5" or 8.6" Rear Differential)

Fitment Notes

Fits GM 8.5" and 8.6" (8.625") 10-bolt rear differentials only - verify differential size before ordering
Compatible with both 28-spline and 30-spline axle configurations on the GM 8.5" axle
Pinion includes ABS tone ring provision - compatible with factory ABS systems
Requires a 2.73-and-up ratio carrier; confirm carrier ratio range before installation
Professional installation is strongly recommended - requires specialized setup tools and precise measurements

Features

High-grade steel construction in both ring and pinion for superior strength and long-term durability
Precision-engineered gear tooth surface finish reduces friction and heat during high-torque and extended-use conditions
Designed to OEM dimensional specs for proper fit and straightforward setup
ABS tone ring provision on pinion maintains factory anti-lock brake system compatibility
Manufactured using state-of-the-art design processes and validated through two in-house Yukon quality labs
Optimized 3.08 ratio balances highway fuel efficiency with solid everyday towing and hauling performance
Quiet operation engineered through advanced tooth geometry and precision machining tolerances
Backed by Yukon's Y.E.S. Plan - a lifetime no-questions-asked protection plan available for as long as you own the vehicle

Specifications

Part Number: YG GM8.5-308
Gear Ratio: 3.08
Ring Gear Diameter: 8.50" (216mm)
Ring Gear Bolt Count: 10
Pinion Spline Count: 30
Differential Application: GM 8.5" / 8.6" (8.625") 10-Bolt Rear
Position: Rear Axle
ABS Provision: Yes

Included Components

1x Ring Gear
1x Pinion Gear

Product Description

The Yukon YG GM8.5-308 is a high-performance ring and pinion gear set built specifically for GM 8.5" and 8.6" 10-bolt rear differentials. The 3.08 gear ratio is an ideal choice for drivers who want to maintain strong highway fuel economy while retaining adequate torque for everyday towing and hauling. Whether you're restoring a worn-out differential or re-gearing after a tire size change, this set delivers the precision and reliability that Yukon Gear & Axle is known for.

Yukon engineers the tooth surface finish on these gears to minimize friction and heat buildup - a critical factor during long tows, high-load scenarios, or spirited driving. High-grade steel is used throughout, and every set is built to OEM dimensional tolerances so setup is clean and predictable. The pinion includes an ABS provision, keeping factory anti-lock brake systems fully functional after installation. A 30-spline pinion and 10-bolt ring gear configuration ensure a direct-fit application for all supported GM platforms from 1999 through 2018.

This gear set fits a wide range of GM half-ton trucks and SUVs, including the Silverado 1500, Sierra 1500, Tahoe, Yukon, Suburban 1500, Yukon XL 1500, Avalanche 1500, and Cadillac Escalade variants equipped with the GM 8.5" or 8.6" rear differential. Professional installation is recommended, as proper gear setup requires precise measurement and specialized tools. For a complete differential rebuild, pair this gear set with a Yukon master overhaul kit for all necessary bearings, seals, and hardware.