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How do I identify my differential?

How do I identify my differential?

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.

How do I identify a Ford front differential?

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 know if I have a limited slip differential?

The easiest way to tell if you have an open differential is to jack up the car and spin one of the rear tires. If the other wheel spins in the opposite direction, you have an open differential. If it spins in the same direction, you have a limited slip differential, or LSD.

How do you find the gear ratio on a Ford?

Open the front door on the driver’s side. Locate the Truck Safety Compliance Certification Label on the door pillar near the door latch. Locate the two-digit code in the box labeled “AXLE,” which is just below the bar code. Match the code on the label to the corresponding rear axle ratio.

What happens if you don’t add limited slip additive?

What happens if you don’t use limited slip additive? Friction modifier makes the fluid “slicker” so without the additive the limited slip clutches will grab and it will shudder going around tight turns. And yes, eventually it will destroy the clutches and render the limited slip useless.

Where can I find list of Ford differentials?

You can use the social sharing buttons to the left, or copy and paste the website link: As part of my research, I went to renowned Currie Enterprises and gathered one of just about every different 9-inch axle variant.

What is the base number for a Ford axle?

In fact, sub-assemblies or accessory kits often had a letter in the second position of the basic number. For example, the base number for shift level is 7213 while the indicator for the shift level is 7A213. The C-washers for axle retention are 4N237, axle brackets are 4A263, and even the differential bearing shims are 4A451.

How big of a differential does a Ford axle need?

So again, unlike the GM and Dana axles that require a unique differential with different ratios, the Ford 8.8-inch differential is common across all of the ring-and-pinion ratios. There is a ton of aftermarket support for this axle (see Chapters 3 and 4 for more details).

What is the Axle code for a 2004 Ford Excursion?

2004 Ford Super Duty Axle Codes: 31 — 3.73 non-limited slip, F-250/Excursion 32 — 4.10 non-limited slip, F-250 41 — 3.73 non-limited slip, F-350