Differential Identification

Differential Axle Identification Image

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, 3rd Members and housings.

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 Chrysler Front
AAM 10.5″ Chrysler
AAM 11.5″ GM / Chrysler
AMC Model 20
Chrysler 8 inch IFS Front Differential
AMC Model 35
Chrysler 7.25″
Chrysler 8″ IFS
Chrysler 8.25″
Chrysler Dodge Plymouth 8.75 Third Member Dana-28-Differential
Chrysler 8.75″
Chrysler 9.25″
Dana 28™
Dana 30™
Dana 44™
Dana 50™
Dana 60™
Dana 70™
Dana S110 Differential Parts Ford 8 inch 3rd member Dropout Differential
Dana 80™
Dana S110
Ford 7.5″
Ford 8″ 3rd Member
Ford 8.8″
Ford 9″ 3rd Member
Ford 9.75″
 Ford 10.25″ & 10.5″
GM '55 Passenger 3rd Member Differential GM '55 Truck 3rd Third Member Dropout GM 7.25" IFS Front Differential S10 Trailblazer Astro 4WD
GM ’55 Passenger
GM ’55 Truck
GM 7.25″ IFS
GM 7.5″/7.625″
8.2' BOP B.O.P. Differential Chevy Blazer Tahoe Suburban Avalanche Silverado Escalade GMC Yukon K10 K25 Sierra Envoy Front Differential
GM 8″
GM 8.2″
GM 8.2″ B.O.P.
GM 8.25″ IFS
GM 8.5″
GM 8.6″
GM 12 Bolt Passenger (8.875″)
GM 12 Bolt Truck (8.875″)
Chevy Avalanche Express Van Hummer H2 GMC K20 K35 Silverado Yukon Sierra Suburban Front IFS Differential Chevy Avalanche Silverado Tahoe Suburban C15 C25 Express Van GMC Sierra Yukon K10 K25 Hummer H2 Rear Differential
GM 9.25″ IFS 
GM 9.5″ 
GM 10.5″ 14 Bolt
Toyota Landcruiser
Toyota 7.5" 3rd Member Early Style Toyota 8" Dropout Pickup 4Runner Differential Toyota Landcruiser 8" Third Member Dropout Differential Toyota Landcruiser 9.5" 3rd Member Dropout Differential
Toyota 7.5″
 Toyota 8″
 Toyota Landcruiser 8″ 
 Toyota Landcruiser 9.5″
Toyota 7.5 Reverse IFS Clamshell Differential Toyota 8" Dropout Pickup 4Runner Differential Toyota-Landcruiser-8-Reverse-IFS-Front Differential Toyota 8.75" Front Differential IFS
Toyota 7.5″ IFS Front
 Toyota 8″ Rear Tacoma/ T100
 Toyota Landcruiser 8″ Reverse IFS 
 Toyota Landcruiser 8.75″ Reverse IFS

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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®.