What vehicles does this spider gear set fit?

This USA Standard Gear spider gear set is designed for Ford 9-inch rear differentials with a 31-spline, 4-pinion setup. It fits a variety of Ford vehicles, including many Bronco, E-Series vans, F-Series trucks, Fairlane, Falcon, Galaxie, Gran Torino, Granada, LTD, Maverick, and Mustang models from the late 1950s through the late 1980s.

What parts are included in this kit?

This kit comes with everything needed for a complete spider gear replacement. You'll receive two side gears, four pinion gears, the cross pin shaft, roll pins, and spider gear thrust washers.

Is this a direct replacement for my Ford 9-inch differential?

Yes, this spider gear set is intended as a direct replacement for Ford 9-inch differentials that are specifically configured for 31-spline axles and a 4-pinion design. It's important to confirm your differential's specifications match this kit's requirements.

Yukon Gear & Axle Ford 9in Spider Gear Set ZIKF9-S-31-4

Name: USA Standard Gear Standard Spider Gear Set For Ford 9in / 31 Spline / 4-Pinion Design
Brand: Yukon Gear & Axle
Price: 270.89 USD
Availability: InStock

USA Standard Gear Standard Spider Gear Set For Ford 9in / 31 Spline / 4-Pinion Design

$270.89

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Yukon Gear & Axle Standard Spider Gear Set for Ford 9in / 31 Spline / 4-Pinion Design. Essential for rebuilding your differential.

Key Features

Fits Ford 9in rear differentials with 31 spline axles and a 4-pinion design.
Includes two side gears, four pinion gears, cross pin shaft, roll pins, and thrust washers.
Well-built materials and manufacturing for a longer-lasting spider gear set.
Designed for a complete and proper spider gear set replacement.
Fits a wide range of classic Ford vehicles including Bronco, F-100, Mustang, and more.

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Will this fit your vehicle?

Product Details

If you're rebuilding the differential in a classic Ford, especially one with a 9-inch rear end, a spider gear set is a critical component. This USA Standard Gear spider gear kit is designed for the 31-spline, 4-pinion Ford 9-inch differential, a popular setup in many Ford trucks and cars from the 1950s through the 1980s.

This kit includes all the necessary pieces for a complete replacement: two side gears, four pinion gears, the cross pin shaft, roll pins, and spider gear thrust washers. USA Standard Gear uses well-built materials and manufacturing techniques to ensure this set lasts, offering a solid option for your differential rebuild without breaking the bank. It's designed to fit right into your existing 4-pinion Ford 9-inch housing.

This set is a good choice for a wide range of Ford vehicles, including popular models like the Bronco, F-100, Mustang, and many Econoline vans. Make sure to verify fitment for your specific application to ensure you have the correct 31-spline, 4-pinion setup.