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Differential and Axle Technical Help
These pages are intended to answer the most common questions and help you solve the most common problems with differential and axle identification, repair, setup, modification and problem diagnosis. If you don’t find the technical help that you need on these pages, contact us, and talk to a differential and axle expert at (800)510-0950.
Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. Read More
Differential carriers are designed to accommodate a range of Ring & Pinion gear ratios for the various tire sizes and vehicle applications. Read More
Use our Differential Gear Ratio Calculator page to determine the best ring and pinion gear ratio for your vehicle. Read More
Noises, vibrations and other irregular driving characteristics can often help diagnose a differential or driveline problem. Read More
Accurate measurement of axle shafts is a crucial step in getting the right axle for your application. We stock tons of axle shafts. Read More
A visual inspection of the failed or damaged ring and pinion gears and/or bearings will usually indicate the cause of most failures. Read More
By following these differential installation instructions carefully, you will achieve proper set up, hoping these instructions are helpful. Read More
Our staff of Differential Experts is ready to help with your specific axles and differentials questions Monday thru Friday from 8am to 5pm. Read More
The following are recommended Differential Set-Up Specifications for various differentials. If in doubt, consult our staff of differential parts specialists. Read More
GM RPO Codes, or General Motors “Regular Production Option” codes contain lots of valuable information about your GM vehicle. Read More
Improper gear break-in procedures may cause overloading and overheating of the ring and pinion gears as well as break down of the gear oil. Read More
Exploded views of typical differential and axle assemblies with part names indicated.