Differential and Axle Technical Help

Differential & Axle Technical Help Topics

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.


Axle and Differential Rear End Identification

Accurate Differential Identification is the first and most important step in your differential repair, upgrade or overhaul project. Read More

Rear End Carrier Breaks Brakes High Low Ratio Carrier

Differential carriers are designed to accommodate a range of Ring & Pinion gear ratios for the various tire sizes and vehicle applications. Read More

RPM Calculator Tire Size conversion Rear End Gear Ratio Calculator

Use our Differential Gear Ratio Calculator page to determine the best ring and pinion gear ratio for your vehicle. Read More


Differential Noise Rear End Problems Howling Chatter

Noises, vibrations and other irregular driving characteristics can often help diagnose a differential or driveline problem. Read More

Axle Length, Axle Splines, Brake Offset, Bolt Circle

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

Broken Ring Gear Reasons Differential Broken pinion Gear

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


Ring & Pinion Gear Install Instructions How To DIY

By following these differential installation instructions carefully, you will achieve proper set up, hoping these instructions are helpful. Read More

What gear ratio do I need Posi Locker Open Differential

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

Differential Torque Specs Ring Gear Torque

The following are recommended Differential Set-Up Specifications for various differentials. If in doubt, consult our staff of differential parts specialists. Read More


GM axle ratio identification codes G Codes

GM RPO Codes, or General Motors “Regular Production Option” codes contain lots of valuable information about your GM vehicle. Read More

Differential rear end gear break in procedure

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

New Ring & Pinion Break In Rear end gears

For more information, inquiries about our products and services, please don’t hesitate to contact us. We look forward to serving you! Contact Us