SKU: YG GM14T-321 | UPC: 883584244653
Yukon Gear Ring and Pinion Gear Set 10.5in GM 14 Bolt Truck / 3.21 ratio
Upgrade your GM 14 Bolt 10.5-inch rear differential with this Yukon Gear high performance ring and pinion gear set in a 3.21 ratio. Engineered for Chevrolet and GMC trucks, vans, Suburbans, and SUVs from 1973-2015 including Silverado 2500/3500 HD, Express 2500/3500, Sierra 2500/3500 HD, and more. Built to handle added horsepower, larger tires, long races, and high torque with reduced friction and heat for reliable performance.
Key Features
- State-of-the-Art Design: – Yukon engineers apply advanced processes and 2 in-house quality labs to meet exact specifications.
- Gear Tooth Finish: – Smooth surface reduces friction and heat in demanding conditions.
- High Grade Steel: – Both ring and pinion use premium steel for strength and durability.
- OEM Specifications: – Precise fitment matches factory dimensions for easy install.
- Wide Ratio Selection: – Choose from Yukon's broadest range including this 3.21 for optimal gearing.
- Comprehensive Warranty: – 1-year against manufacturing defects plus optional Y.E.S. Plan for lifetime coverage.
Specifications
| Detail | Value |
|---|---|
| Brand | Yukon Gear & Axle |
| Type | Ring & Pinion Gear Set |
| Ratio | 3.21 |
| Axle | GM 14 Bolt 10.5-inch Truck |
| Weight | 27.85 lbs |
| Shipping Dimensions | 19 x 19 x 9 inches |
| Country of Origin | USA (designed & tested) |
| Warranty | 1 Year Manufacturing Defects + Y.E.S. Lifetime Plan |
Whats Included
- 3.21 Ratio Ring Gear
- 3.21 Ratio Pinion Gear
Product Notes
- Requires professional installation with proper gear setup tools and procedures.
- Compatible with GM 14 Bolt 10.5" differentials in 2WD/4WD trucks/vans/SUVs.
- Special order item - confirm fitment for your specific vehicle.
This Part Fits
| Year Range | Make | Model | Notes |
|---|---|---|---|
| 2002-2006 | Chevrolet | Avalanche 2500 | Base, LS, LT |
| 1975-1986 | Chevrolet | C20 Pickup | Cheyenne, Custom, Scottsdale, Silverado |
| 1973-1986 | Chevrolet | C20 Suburban | Base, Custom, Scottsdale, Silverado |
| 1988-2000 | Chevrolet | C2500 | Base, Cheyenne, LS, Scottsdale, Silverado, WT |
| 1992-1999 | Chevrolet | C2500 Suburban | Base, LS, LT, Silverado |
| 1975-1986 | Chevrolet | C30 | Cheyenne, Custom, Scottsdale, Silverado |
| 1988-2000 | Chevrolet | C3500 | Base, Cheyenne, LS, Scottsdale, Silverado |
| 1996-2015 | Chevrolet | Express 2500/3500 | Base, LS, LT |
| 1975-1996 | Chevrolet | G20/G30 | Beauville, Chevy Van, Sportvan, Hi-Cube |
| 1975-1986 | Chevrolet | K20 Pickup/Suburban | Cheyenne, Custom, Scottsdale, Silverado |
| 1988-2000 | Chevrolet | K2500/K3500 | Base, Cheyenne, LS, Scottsdale, Silverado, WT |
| 1992-1999 | Chevrolet | K2500 Suburban | Base, LS, LT, Silverado |
| 1977-1986 | Chevrolet | K30 | Cheyenne, Custom, Scottsdale, Silverado |
| 1987-1991 | Chevrolet | R/V20/R/V2500/R/V30 | Cheyenne, Custom Deluxe, Scottsdale, Silverado |
| 1999-2006 | Chevrolet | Silverado 2500/2500 HD/3500 HD | Base, LS, LT, WT, High Country, LTZ, Classic |
| 2000-2013 | Chevrolet | Suburban 2500 | Base, LS, LT, LTZ |
| 1975-1978 | GMC | C25/C35/C25 Suburban | Base, High Sierra, Sierra Classic/Grande |
| 1979-2000 | GMC | C2500/C3500 | Base, High Sierra, Sierra, Classic, SL/SLE/SLT/SLX, Grande |
| 1979-1999 | GMC | C2500 Suburban | Base, High Sierra, Classic, SLE, SLT, Grande |
| 1979-1996 | GMC | G3500 | Magnavan, Rally, STX, Vandura, Camper Special |
| 1975-1993 | GMC | K25/K2500/K3500 | Base, High Sierra, Sierra, Classic, SL/SLE/SLT/SLX, Grande |
| 1996-2015 | GMC | Savana 2500/3500 | Base, LS, LT, SLE, SLT |
| 1999-2015 | GMC | Sierra 2500/2500 HD/3500 HD/Yukon XL 2500 | Base, SL/SLE/SLT, Denali |
Why Choose Yukon Gear?
- Engineered and tested in 2 in-house labs for precise quality.
- Reduces gear friction and heat for high-torque durability.
- High-grade steel construction matches OEM fitment.
- Offers widest gear ratio availability for custom builds.
Frequently Asked Questions
- Q: What vehicles does this 3.21 ring and pinion fit?
- A: Fits GM 14 Bolt 10.5" axles in Chevy/GMC 2500/3500 trucks, vans, Suburbans from 1973-2015 - see fitment table.
- Q: Is professional installation required?
- A: Yes, gear setup needs specialized tools for proper backlash and pattern.
- Q: What warranty is provided?
- A: 1-year against manufacturing defects. upgrade to Y.E.S. Plan for lifetime no-questions-asked coverage.
Shipping & Handling
- Method: UPS/FedEx Ground
- Availability: Special order – ships within 1-3 business days
- Packaging: Secure box 19x19x9 inches, 27.85 lbs
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