The Perfect Blend

Transtar has everything you need to complete your next Differential job. When you partner with Transtar, you get a rich blend of quality parts, expertise, and exceptional customer service, with same or next-day delivery.

Expertise that Extends Beyond the Transmission

Transtar is known for our transmission expertise, but we also carry rear, front, 4-wheel and all-wheel drive differential rebuild kits, components and accessories from the brands you know and trust.


More Parts, More Places

With our comprehensive line of differential and drivetrain products, combined with our extensive nationwide distribution network, you will have the parts you need, when you need them. And, everything is covered under our Limited Warranty.


  • Transtar's limited warranty: products are warranted to be free of defects in material and workmanship for a period of 12 months or 12,000 miles from the date of purchase, whichever occurs first.

    Any manufacturer, third-party, extended warranties, or limited lifetime warranties, should be handled through the manufacturer.

  • Yes, even a ¼” of difference in tire diameter will cause a differential to fail due to excessive stress placed on the internals of the carrier. The results can be catastrophic.

  • Have you tried our Gear Ratio Calculator? CLICK HERE to find the ideal RPM for your vehicle when applying different ratios to the equation.