What vehicles does this spider gear set fit?

This spider gear set is designed for Ford 8.8-inch Trac Loc differentials with 31 spline axle shafts. It fits a broad range of Ford vehicles, including many F-150s, Mustangs, Broncos, Crown Victorias, and E-Series vans from 1979 to 2014.

What is the main function of spider gears in a differential?

Spider gears are a crucial part of the differential's internal mechanism. They allow your wheels to rotate at different speeds when you turn corners, while still ensuring that power is sent to both wheels, preventing one from spinning freely.

USA Standard Gear Standard Spider Gear Set For Ford 8.8in Trac Loc Posi / 31 Spline

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Specifications

Brand: Yukon Gear & Axle
Part #: ZIKF8.8-T/L-31
UPC: 883584390329

USA Standard Gear Standard Spider Gear Set For Ford 8.8in Trac Loc Posi / 31 Spline

Name: USA Standard Gear Standard Spider Gear Set For Ford 8.8in Trac Loc Posi / 31 Spline
Brand: Yukon Gear & Axle
Price: 299.89 USD
Availability: InStock

$299.89

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Yukon Gear & Axle spider gear set for Ford 8.8" Trac Loc differentials with 31 spline. Replaces worn internal differential gears for proper power transfer.

Key Features

Fits Ford 8.8-inch Trac Loc differentials with 31 spline axle shafts.
Includes two side gears, two pinion gears, cross pin shaft, cross pin bolt, and spider gear thrust washers.
Constructed with high-quality materials for improved longevity.
Designed to replace worn internal differential gears for proper operation.
Ensures smooth power transfer to both wheels in a posi-traction differential.

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Will this fit your vehicle?

Product Details

This USA Standard Gear spider gear set is built with strong materials and solid manufacturing techniques, designed to last longer in your Ford 8.8-inch differential. If your differential is making noise during turns or not engaging properly, worn spider gears could be the culprit. This kit includes all the necessary components to get your differential working right again, ensuring smooth power delivery to both wheels when needed.

Inside this kit, you'll find two side gears, two pinion gears, the cross pin shaft, a cross pin bolt, and spider gear thrust washers. These parts work together within your Trac Loc posi-traction unit to allow your wheels to rotate at different speeds when turning, while still sending power to both. This set is specifically for the 31-spline axle shafts found in many Ford vehicles, including popular models like the F-150, Mustang, and Bronco, as well as Crown Victoria and E-Series vans.

Replacing these internal differential components is a job that requires careful attention to detail and proper setup. If you're rebuilding your differential, this well-built spider gear set is a solid option to restore its function and ensure reliable performance for a wide range of Ford trucks, cars, and SUVs.