Differential Identification Pictures

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

The following information is provided to help you identify the differential you are working on. If in doubt, consult one of our differential experts at (800)510-0950! Professional technical support is available Monday thru Friday from 8am to 5pm Pacific Standard Time.


Differential Identification using Tags & Stampings

The most accurate differential identification is provided by the bottom line of the tag number or axle tube stamp. Differential tags can easily be used to identify Dana and Ford differentials.


Dana Spicer Differential Tags

Dana Spicer Differential Identification Tags


Dana Spicer B.O.M. Numbers

Dana Spicer Axle Identification Numbers BOM Bill Of Materials

The Bill of Material (BOM) number is used to identify Dana differentials. The BOM will identify the model number, the gear ratio, the type of differential, and all component parts. Traditional BOM’s are 6 digits followed by 1 or 2 digits and start with the numbers 60 or 61. On some tags, the first 2 digits don’t appear on the tag, but they must be used to identify the axle. For instance, you might see 5561-1 for the BOM, but the 60 has been dropped, and one would need to use 605561-1. Later BOM’s may start with the first 3 digits of 200, but these are typically not dropped from the tag.

*** The B.O.M. Numbers stamped into the long tube of the axle housing are often faint and hard to read. Using a metal scraper will typically reveal the numbers most easily. Cleaning with a wire wheel is not recommended as it usually makes the numbers harder to see ***

The “Dana Expert” website is no longer available. However, the Dana Aftermarket Media Library can be used to identify all aspects of a particular axle using the Bill Of Materials number.

  1. Navigate to the Dana Aftermarket Media Library
  2. Enter the BOM number in the Keyword Search field (top left corner of the page).
  3. Click on the resulting literature link
  4. Search within the document by clicking on the Magnifying Glass at the top, or by simply using “Control-F” and re-entering the BOM number.

Need help identifying your differential or not sure which replacement or performance parts you need? Call our staff of differential experts at (800)510-0950. We’re here to help Monday thru Friday from 8AM to 5PM PST


Ford Differential Tags

Ford Axle and Differential Identification Tag ID

Ford differential tags are very straightforward, as indicated above. The Month of Manufacture uses the following format:
A = January, B = February, C = March, etc.


GM RPO Identification Codes

GM RPO Codes Axle identification

GM Vehicles come with a RPO code tag, usually located in the vehicles glovebox or door jamb. These tags have a wealth of information about your specific vehicle’s equipment and specifications. Read more about GM RPO Axle Identification Codes

Need help identifying your differential or not sure which replacement or performance parts you need? Call our staff of differential experts at (800)510-0950. We’re here to help Monday thru Friday from 8AM to 5PM PST


Identifying the Components you Need

Not sure what the part you need is called? Our Online Catalog has Exploded View Diagrams for nearly every Axle Assembly that we service. You can also use our Generic Exploded View Diagrams to identify the part you want by name. This way we’ll be on the same page when you call!


Visual Differential Identification

Without an ID tag, differentials are 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. Dropout differentials are also referred to as 3rd members or pumpkins.

Use the images below to Help Identify Your Differential.

American Axle AAM 9.25 Inch - Differential, Gear & Axle PartsAAM 9.25″ Chrysler

AAM 9.25″ Parts Catalog

AAM 10.5 Inch Chrysler - Differential, Gear & Axle PartsAAM 10.5″ Chrysler

AAM 10.5″ Parts Catalog

Chrysler 9.25 Inch ZF - Differential, Gear & Axle PartsChrysler 9.25″ ZF

9.25″ ZF Parts Catalog

Chrysler 9.25 Inch ZF RAM Front - Differential, Gear & Axle PartsChrysler 9.25″ ZF Front

Welded Ring Gear

Stay Tuned!

Dana 20 - Differential, Gear & Axle PartsDana 28 IFS Front

Dana 28 Parts Catalog

Dana 28 IRS Escape Rear - Differential, Gear & Axle PartsDana 28 IRS Rear

Dana 28 Parts Catalog

Dana 30 M186 Jeep JL Wrangler / JT Gladiator Front - Differential, Gear & Axle PartsDana 30 M186 Jeep JL Front

D30 JL Front Parts Catalog

Dana 35 Advantek M200 Jeep JL Wrangler Rear - Differential, Gear & Axle PartsDana 35 AdvanTEK® Jeep JL Rear

D35 JL Rear Parts Catalog

Dana 44 Advantek M210 JL Wrangler / JT Gladiator Rubicon Front - Differential, Gear & Axle PartsDana 44 AdvanTEK® Jeep JL/JT Front

D44 JL/JT Front Parts Catalog

Dana 44 Advantek M220 JL Wrangler / JT Gladiator Rubicon Rear - Differential, Gear & Axle PartsDana 44 AdvanTEK® Jeep JL/JT Rear

D44 JL/JT Rear Parts Catalog

Dana M256 Super 60 Front Axle - Gear Axle and Differential PartsDana M256 Front

Dana Super 60 Parts Catalog

Dana M275 10.8" Rear Axle - Differential Gear and Axle Parts CatalogDana M275 10.8″ Rear

Dana M275 Parts Catalog

Dana M300 11.8" Rear Axle - Differential, Gear & Axle PartsDana M300 11.8″ Rear

Dana M300 Parts Catalog

GM 55 Passenger - Differential, Gear & Axle PartsGM ’55 Passenger

GM 55P Parts Catalog

GM 55 Truck - Differential, Gear & Axle PartsGM ’55 Truck

GM 55T Parts Catalog

GM 7.25 Inch IFS - Differential, Gear & Axle PartsGM 7.25″ IFS

GM 7.25″ Parts Catalog

GM 8.875 Inch 12 Bolt Passenger - Differential, Gear & Axle PartsGM 12-Bolt Passenger

GM 12-Bolt Parts Catalog

GM 8.875 Inch 12 Bolt Truck - Differential, Gear & Axle PartsGM 8.875″ 12-Bolt Truck

GM 12-Bolt Parts Catalog

GM 9.25 Inch IFS - Differential, Gear & Axle PartsGM 9.25 IFS Front

GM 9.25″ Parts Catalog

GM 9.25 Inch IFS - Differential, Gear & Axle PartsGM 9.25 11+ Front

GM 9.25″ Parts Catalog

GM 9.5 Inch 14 Bolt - Differential, Gear & Axle PartsGM 9.5″ 14-Bolt Rear

GM 9.5″ Parts Catalog

GM 9.5 Inch 14 Bolt - Differential, Gear & Axle PartsGM 9.5″ 14-Bolt Rear

GM 9.5″ Parts Catalog

GM 9.5 Inch 14 Bolt - Differential, Gear & Axle PartsGM 9.5″ 12-Bolt Rear

GM 9.5″ Parts Catalog

GM 9.76 Inch - Differential, Gear & Axle PartsGM 9.76″ 2014+ Rear

GM 9.76″ Parts Catalog

GM 10.5 Inch 14 Bolt - Differential, Gear & Axle PartsGM 10.5″ 14-Bolt

GM 10.5″ Parts Catalog

Chevrolet Camaro V6 195mm Rear - Differential, Gear & Axle PartsCamaro V6 195mm

Camaro V6 Parts Catalog

Chevrolet Camaro V8 218mm Rear - Differential, Gear & Axle PartsCamaro V8 218mm

Camaro V8 Parts Catalog

Pontiac GTO - Differential, Gear & Axle PartsGTO ’04 – ’06

Late Model GTO Parts Catalog

Chevrolet Corvette - Differential, Gear & Axle Parts’63 – ’79 Corvette

’63-’79 Corvette Catalog

Corvette Dana 36 - Differential, Gear & Axle PartsCorvette D36 ’84-’96

Corvette D36 Parts Catalog

Corvette Dana 44 - Differential, Gear & Axle PartsCorvette D44 ’80-’82

Corvette D44 Parts Catalog

Corvette Dana 44 HD - Differential, Gear & Axle PartsCorvette D44HD ’84-’96

Corvette D44HD Catalog

Corvette GETRAG Rear Axle - Differential, Gear & Axle PartsGETRAG ’97-’05

Corvette GETRAG Catalog

Mercedes Sprinter Vanlife - Differential, Gear & Axle PartsMercedes Sprinter

07+ MB248 Parts Catalog

Nissan M226 Titan Rear - Differential, Gear & Axle PartsNissan M226 ’04-’07

Nissan M226 Parts Catalog

Nissan Titan M226Rear Axle - Differential, Gear & Axle PartsNissan M226 ’08+

Nissan M226 Parts Catalog

Nissan M205 Titan, Pathfinder and Armada Front - Differential, Gear & Axle PartsNissan M205 Front

Nissan M205 Parts Catalog

Nissan R200 Frontier & XTerra Front - Differential, Gear & Axle PartsNissan R200 Front

Nissan R200 Parts Catalog

Nissan C200K Frontier & XTerra Rear - Differential, Gear & Axle PartsNissan C200K Rear

Nissan C200K Parts Catalog

Toyota 7.5 Inch - Differential, Gear & Axle PartsToyota 7.5″ Early

Toyota 7.5″ Parts Catalog

Toyota 7.6 - Differential, Gear & Axle PartsToyota 7.5″ IFS Standard Rotation

Toyota 7.5″ Parts Catalog

Toyota 7.5 Gear Reverse Clamshell Front - Differential, Gear & Axle PartsToyota 7.5″ IFS Reverse Clamshell

Toyota 7.5″ Parts Catalog

Toyota 8 Inch - Differential, Gear & Axle PartsToyota 8″ 4-Cylinder Front/Rear

Toyota 8″ Parts Catalog

Toyota 8 Inch V6 - Differential, Gear & Axle PartsToyota 8″ V6 / Turbo Rear

Toyota 8″ Parts Catalog

Toyota Tacoma 8 Inch E-Locker - Differential, Gear & Axle PartsToyota 8″ w / E-Locker Rear

Toyota 8″ Parts Catalog

Toyota 8 Reverse Clamshell 4Runner, FJ, Tacoma & GX Front - Differential, Gear & Axle PartsToyota 8″ IFS Rev. Clamshell

8″ Reverse Parts Catalog

Toyota 8.2 Inch - Differential, Gear & Axle PartsToyota 8.2″ Rear Third Member

Toyota 8.2″ Parts Catalog

Toyota 8.4 Tacoma. T100 & Tundra Rear - Differential, Gear & Axle PartsToyota 8.4″ Rear Third Member

Toyota 8.4″ Parts Catalog

Tacoma 8.75 Tacoma Rear - Differential, Gear & Axle PartsToyota 8.75″ Rear Third Member

Toyota 8.75″ Rear Parts Catalog

Toyota Tundra & Land Cruiser 8.75 IFS Front - Differential, Gear & Axle PartsToyota 8.75″ Reverse IFS Front

Toyota 8.75″ IFS Parts Catalog

Toyota 10.5 Inch Tundra 5.7 Rear - Differential, Gear & Axle PartsToyota 10.5″ Rear Third Member

Toyota 10.5″ Parts Catalog

Landcruiser 8 Inch Reverse Front - Differential, Gear & Axle PartsToyota Land Cruiser 8″ Rev. Front

Land Cruiser 8″ Front Parts

Toyota Land Cruiser Landcruiser 9.5 Inch - Differential, Gear & Axle PartsToyota Land Cruiser 9.5″ Front / Rear

Land Cruiser 9.5″ Parts

 Toyota Land Cruiser 200 Series - Differential, Gear & Axle PartsToyota Land Cruiser 9.5″ Late Rear

Land Cruiser 9.5″ Parts

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Our full-time staff of LIVE Differential and Axle Parts Experts are ready to help you Monday thru Friday from 8AM to 5 PM Pacific Standard Time.

Differentials are all we do….Let us take the guesswork out of your project!

(800) 510-0950

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