Guaranteed Quality Parts!
Since 1998, Differential Repair Professionals and DIY Installers have relied on Sierra Gear & Axle for Guaranteed Quality Differential and Axle components. Sierra Gear & Axle is the OEM quality alternative to high priced OEM parts.
Differential Installation Kits
Our Differential Repair Rebuild and Installation Kits are the most complete in the industry!
Work or Play, On Road or Off…We’ve Got you Covered!
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Doing a gear ratio change but not sure what you what’s best? Try our Calculator!
From Gear Ratio Calculators to complete Installation Instructions. You’ve found the place!
Featured Products, News & Specials
Careful identification of the differential you are working on will make sure you get the right parts for the job the first time. Need help with your differential identification …