Differential Identification

Differential Identification Chart - Sierra Gear & Axle

The first and most important step in any differential repair or ratio change is accurate differential identification!

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? Call Sierra Gear & Axle at (800)792-2714. Our differential experts are available from 8am to 5pm PST Monday thru Friday.

Differentials can be identified most accurately by the tag number or axle tube stamp. Whenever possible, reference the tag numbers when ordering parts for your Differential. If the ID tag or stamp is missing or unreadable, differentials can be identified by the number of cover bolts, the distinctive shape of the cover, the number of ring gear bolts, and ring gear diameter. They can also be identified by whether the center section is an integral or dropout design. The chart below shows various differential covers and 3rd Members.

Found your application and need parts? Locate a Sierra Gear & Axle Distributor near you, or call (800) 792-2714

Differential Identification AAM 9.25 Image Differential Identification AAM 10.5 Image Differential Identification AAM 11.5 Image

AAM 9.25

AAM 10.5″ Chrysler

AAM 11.5″ GM / Chrysler

AMC Model 20

AMC Model 35

Chrysler 7.25″

Chrysler 8.25″

Chrysler 9.25″

Dana 30™

Dana 44™

Dana 60™

Dana 70™

Dana 80™

Ford 7.5″

Ford 8.8″

Ford 8″ 3rd Member

Ford 9″ 3rd Member

Ford 9.75

Ford 10.25″ & 10.5″

GM 7.5″

GM 8″

GM 8.2″

GM 8.5″

GM 8.6″

 GM 12 Bolt Passenger

 GM 12 Bolt Truck

GM 10.5″ 14 Bolt

Toyota Landcruiser

 Toyota 3rd Member


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The Dana® Trademarks referred to herein are Trademarks of Dana Limited. The Dana® Trademarks are used for informational purposes only, and there is no connection between Sierra Gear & Axle and Dana®.