Yukon Gear & Axle Ford Multiple Models Limited Slip Differential Assembly - Trac Loc Positraction with Carbon Fiber Clutches (’79–’14). This complete Yukon Trac-Loc Positraction carrier is designed as a direct-fit limited-slip replacement for Ford 8.8" axles with 31 splines and provides a durable, serviceable option for enthusiasts updating their drivetrain.

The carrier case is cast and machined to Yukon’s factory tolerances for strength and fit. The Trac-Loc/Positraction design delivers predictable limited-slip behavior under load, while the carbon fiber clutch pack offers consistent engagement and improved heat resistance compared to some traditional materials. This assembly includes the carrier, clutch pack, spider gears and associated internal components for a complete limited-slip differential installation in compatible Ford applications from 1979 through 2014 (Yukon part YC F318-C). Ideal for owners who want reliable on-road traction control without changing axle spline count or housing setup.

Features

• Fits Ford 8.8" differential housings with 31‑spline axles
• Trac-Loc / Positraction limited-slip carrier design
• Carbon fiber clutch pack for consistent engagement and durability
• Cast and machined carrier case for strength and tight tolerances
• Complete assembly including spider gears and internal components

If you have questions about fitment, gearing, or installation, please call us — we’re happy to help. We have installation and customization services at two locations: Austin, Texas and the Los Angeles, California area. Call 512-982-9393 (TX) or 562-981-6800 (CA) to speak with a technician or to schedule service. If you are considering purchasing multiple items, contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov