Yukon Gear & Axle
Yukon Gear & Axle YG GM12T-373 High Performance Gear Set For GM 12 Bolt Truck in a 3.73 Ratio
Yukon Gear & Axle YG GM12T-373 High Performance Gear Set For GM 12 Bolt Truck in a 3.73 Ratio
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Overview
Genuine Yukon Gear & Axle part.
Yukon Gear & Axle high-performance ring and pinion gear sets are the benchmark of quality in the automotive gear industry. Yukon engineers use state-of-the art design, advanced heat-treating techniques, and leading-edge quality testing processes to ensure the structure and surface finish meet exacting specifications and quality standards. Yukon offers its Y.E.S. Plan, a lifetime, comprehensive, no-questions-asked protection plan covering your gear set for as long as you own your vehicle. Whether you’ve added tons of horsepower under the hood, upgraded to bigger tires, are just want to optimize the traction performance of your ride, Yukon offers the widest selection of gear ratios on the market to accommodate every need.
Key Features
- 8.875 in. Ring Gear Diameter
Fitment
- Fits the GM 12 axle
- Fits 1969-1974, 1987 Chevrolet Blazer
- Fits 1963-1986 Chevrolet C10
- Fits 1967-1981 Chevrolet G10
- Fits 1967-1986 Chevrolet K10
- Fits 1975-1986 Chevrolet K5 Blazer
- Fits 1987 Chevrolet R10
- Fits 1963-1966 Chevrolet Suburban
- Fits 1987 Chevrolet V10
- Fits 1975-1978 GMC C15
- Fits 1967-1974 GMC C15/C1500 Pickup
- Fits 1967-1974 GMC C15/C1500 Suburban
- Fits 1979-1986 GMC C1500
- Fits 1975-1978 GMC G15
- Fits 1967-1974 GMC G15/G1500 Van
- Fits 1965-1966, 1979-1987 GMC G1500
- Fits 1975-1978 GMC G25
- Fits 1967, 1970-1974 GMC G25/G2500 Van
- Fits 1979-1981 GMC G2500
- Fits 1975-1978 GMC K15
- Fits 1966-1974 GMC K15/K1500 Pickup
- Fits 1967-1974 GMC K15/K1500 Suburban
- Fits 1979-1986 GMC K1500
- Fits 1987 GMC R1500
- Fits 1963-1966 GMC Suburban
- Fits 1987 GMC V1500
Product Details
| Brand | Yukon Gear & Axle |
| Manufacturer Part Number | YG GM12T-373 |
| Type | Ring & Pinion Gear Set |
| Axle Model | for GM 12 |
| Gear Ratio | 3.73 |
| Ring Gear Bolts | 12 |
| Application | Sold by axle specification — match the axle model, gear ratio, spline count and dimensions to your own axle before ordering |
Product image is for reference only; actual item may differ.
WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
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Manufacturer's Warranty — Yukon Gear & Axle
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Manufacturer's Warranty — Yukon Gear & Axle
Yukon Gear & Axle warrants to the original retail purchaser that its products are free from defects in materials and workmanship, and the term is set by product line rather than by one figure for the whole catalogue. Ring & pinion gear sets, carriers, yokes, install kits (BK, MK, PK, YK), spider gear kits, tools and YP-series parts carry one (1) year; Positraction differentials carry one year and exclude premature clutch wear and abuse. Zip Lockers carry six (6) years and Grizzly Lockers one year, each with collateral parts and labor coverage up to $2,000 on the terms Yukon publishes. 1541H front and rear axles carry ten (10) years, while 4340 chromoly axles (YA W series), spools, Super Joints, YHC drive flanges, Hardcore locking hubs and Hardcore diff covers carry a Limited Lifetime warranty for as long as the original purchaser owns the vehicle the part was first installed in (not transferable). Coverage assumes the product was installed and maintained per Yukon instructions and not modified, abused or damaged in an accident, and Yukon may void the warranty on vehicles running tires larger than its Maximum Recommended Tire Size for that axle. On a verified defect Yukon will repair or replace the product at its choice. Labor, road service, loss of vehicle use and other incidental or consequential damages are excluded, as is axle damage caused by the failure of a non-Yukon component. Yukon also sells an optional Yukon Extended Service (Y.E.S.) plan that upgrades select products to lifetime coverage; it must be purchased within 30 days of ordering the Yukon product. This warranty gives you specific legal rights, and you may have other rights that vary from state to state.
Warranty terms are set by the manufacturer and may change. Full details and claims are handled directly by Yukon Gear & Axle. Contact us if you need help with a warranty claim.

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