How do I identify my Ford rear differential?

Identifying Your Ford Rear Differential
To identify your Ford rear differential, you can follow these steps:
1. Check the tag number or axle tube stamp: The most accurate way to identify your differential is by checking the bottom line of the tag number or the axle tube stamp. These tags can easily be used to identify Dana and Ford differentials.
2. Use the Bill of Materials (BOM) number: The BOM number is used to identify Dana differentials. It provides information about the model number, gear ratio, type of differential, and component parts. Traditional BOMs are 6 digits followed by 1 or 2 digits and usually start with the numbers 60 or 61. Some tags may not display the first 2 digits, but they are still necessary for identification.
3. Consult a differential expert: If you’re still unsure about the identification process, you can consult one of the differential experts at West Coast Differentials. They provide professional technical support Monday through Friday from 8am to 5pm Pacific Standard Time. You can reach them at (800)510-0950.
It’s important to note that there are various Ford rear differentials available, such as the Ford 7.5″, Ford 8″, Ford 8.8″, Ford Super 8.8″, Ford 9″, Ford 9.75″, and Ford 10.25″/10.5″. The specific identification process may vary depending on the model and year of your Ford vehicle.
I hope this helps you identify your Ford rear differential! Let me know if you have any other questions.

How do I identify the differential on my Ford truck?

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.

How do you decode a Ford differential tag?

Gives most of the Fords will have the same format. So your super duties your f-150 is your Mustangs. Pretty much follow the same setup. You’ll have the ratio you’ll have the differential. Diameter.

How do I identify my Ford Dana axle?

The Dana Axle Bill of Material Number will tell us what your axle model is, the ratio, and what parts your particular axle was built with. There should be a metal Dana BOM Tag held on by two of the diff cover bolts. There should also be a white Ford assembly decal on the right axle beam.

How do you identify a Ford rear axle assembly?

FORD AXLE IDENTIFICATION TAGS
The location of Ford identification tags will vary by model, but most are located on a carrier cover bolt. The Ring Gear Size (differential type) and the Gear Ratio will be printed on the tag (as well as whether or not the differential is limited slip).

How to tell the difference between Ford 8.8 and 9.75 rear end?

On the passenger’s side upper and lower corners, there’s two semi-circular divots that can easily be seen when looking at the cover from straight on. While the Super 8.8’s cover has a bulge for the ring gear, it’s not anywhere near as pronounced as the 9.75’s.

How do I identify my Ford axle?

FORD AXLE IDENTIFICATION TAGS
The location of Ford identification tags will vary by model, but most are located on a carrier cover bolt. The Ring Gear Size (differential type) and the Gear Ratio will be printed on the tag (as well as whether or not the differential is limited slip).

How do I identify my 8 inch Ford rear end?

Of course, the simplest way to ensure you have an 8-inch rear is to find the ID tag still attached to one of the differential mounting bolts. Axle codes would be a four- or five-digit letter designation for the top row of numbers on the tag.

What Ford rear end do I have?

The ID tag can be your friend. It will tell you the gear ratio, rearend style, and whether it has limited-slip. Also on the tag is an ID number, which, until 1985, included four to five letters, no numbers. Almost all 8.8s—and all post-1986 Ford rearends—have letters and numbers.

Can you tell gear ratio from VIN?

You don’t. That information is not contained in the VIN, UNLESS a specific model only gets one rear end ratio. VIN tells country of manufacture, vehicle make, class, engine type, size, date of manufacture, plant and serial number. That is the ONLY information contained by the VIN.

How do I know what kind of rear differential I have?

How to Identify Your Differential and Axle Type

1. Cover Bolt Count. Since most differentials have a unique cover bolt pattern i.e. 10-bolt, 12-bolt, or 14-bolt, counting them up will narrow the field and help you with identification.
2. Axle Flotation.
3. Get Your Spline In Line.
4. Spec Out Your Hub.
5. Pinion Size & Ring Gear Diameter.