What is a positraction differential and why would I want one?

A positraction, or limited-slip differential, sends power to both drive wheels simultaneously. This is an improvement over an open differential, which sends power to only one wheel, especially when traction is uneven. It helps you get moving and maintain control in slippery conditions or during spirited driving.

What vehicles does this specific Yukon Dura Grip fit?

This YDGF8.8-31-1 model is designed for Ford 8.8-inch rear axles that use 31-spline axle shafts. This includes many Ford trucks, SUVs, and performance cars from the 1970s through the 2010s, such as the Mustang, F-150, Bronco, and Explorer.

Does this differential come with everything needed for installation?

This listing is for the Yukon Dura Grip positraction differential unit itself. Installation typically requires additional components such as bearings, seals, ring gear bolts, and potentially a new gear set if you are changing your gear ratio. It's recommended to consult the manufacturer's installation guide or a professional mechanic for a complete parts list and procedure.

Yukon Gear Dura Grip Positraction For Ford 8.8in w/31 Spline Axles

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Specifications

Brand: Yukon Gear & Axle
Part #: YDGF8.8-31-1
UPC: 883584260066

Yukon Gear Dura Grip Positraction For Ford 8.8in w/31 Spline Axles

Name: Yukon Gear Dura Grip Positraction For Ford 8.8in w/31 Spline Axles
Brand: Yukon Gear & Axle
Price: 901.89 USD
Availability: InStock

$901.89

On Backorder — Expected to ship by Apr 10, 2026

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

Yukon Gear Dura Grip positraction for Ford 8.8in axles with 31 spline. Provides smooth, aggressive traction for many Ford vehicles.

Key Features

Fits Ford 8.8-inch axles with 31-spline axles, compatible with all gear ratios.
Yukon Dura Grip positraction limited slip differential provides smooth yet aggressive traction.
Constructed with a high-strength nodular case for durability.
Features forged 4320 chromoly spider gears with strong, precisely cut teeth.
Includes composite clutches for reliable and consistent limited-slip performance.
Completely rebuildable design for long-term serviceability.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Will this fit your vehicle?

Product Details

If you're looking to improve traction on your Ford vehicle, this Yukon Gear & Axle Dura Grip positraction limited slip differential is a solid option. It's built for the Ford 8.8-inch axle with 31-spline axles, a common setup in many Ford trucks, SUVs, and performance cars like the Mustang, Bronco, and F-150. This unit replaces your open differential to send power to both wheels simultaneously, giving you better grip when you need it most, whether you're on the street, trail, or track.

What sets the Dura Grip apart is its well-built construction. It features a strong nodular case and forged 4320 chromoly spider gears, which are cut to ensure the strongest possible teeth for durability. The unit also uses composite clutches for smooth engagement and aggressive traction. Because it's completely rebuildable, you can maintain its performance for a long time. It's also proudly assembled in the USA, backed by extensive product testing and advanced software design.

This positraction unit is designed to work with all gear ratios for the Ford 8.8-inch axle. It's a significant upgrade for vehicles that see a variety of driving conditions, offering a noticeable improvement in grip and confidence.