PowerTrax No-Slip Ford 9" Differential Locker 31 Spline -Fits Open Differential | Compatible for Ford, Lincoln, Mercury | Replaces Eaton 187SL17B, Auburn Gear 542036 | Heavy-Duty Performance

⚙ Upgrade your vehicle’s traction with the PowerTrax NO-SLIP Differential Locker, engineered for Ford 9" open differentials with 31 splines. Designed for enhanced performance, this locker is perfect for off-road, towing, and high-horsepower applications.🚗 Features & Benefits:Automatic Locking Action – Provides maximum power transfer while maintaining smooth engagement for on & off-road use.Drop-In Installation – No special tools or professional modification required; fits directly into Ford 9" open differentials.Extreme Durability – Built from heat-treated, precision-machined materials for ultimate strength and reliability.Ideal for High-Torque Applications – Designed for muscle cars, trucks, and SUVs that require enhanced traction and control.Built for Performance & Longevity – Perfect for daily driving, off-roading, and heavy-duty work applications.🔄 Applications & Compatibility:Compatible with vehicles equipped with Ford 9" axles:🚗 Ford:Bronco (1966-1986), E-100/E-150 Econoline (1969-1986), F-100/F-150 (1975-1986)Fairlane (1957-1970), Falcon (1965-1970), Mustang (1965-1978), Ranchero (1957-1979)Gran Torino (1972-1976), LTD (1965-1979), Thunderbird (1955-1979), Torino (1968-1976)🚗 Lincoln:Continental (1958-1979), Mark III (1968-1971), Versailles (1977-1980)🚗 Mercury:Cougar (1967-1979), Grand Marquis (1975-1978), Marauder (1963-1970), Montego (1968-1976)Monarch (1975-1980), Bobcat (1975-1980), Comet (1964-1977)🔧 Replaces For:PowerTrax: 1810-LR, GT109031, LK109031, LS109031Eaton: 187SL17B, 913A586Auburn Gear: 542036, 544909ARB: RD119🛡 Warranty & Why Choose PowerTrax?PowerTrax is a leader in high-performance traction technology, offering reliable, durable solutions for vehicles requiring superior grip. Backed by a 2-year/100,000-mile warranty for peace of mind.

• ✅ Enhanced Traction & Control – PowerTrax NO-SLIP locker delivers superior grip, perfect for off-road, towing & performance vehicles.
• ✅ Easy Drop-In Installation – No special tools needed; fits Ford 9" open differentials with 31-spline axle shafts for quick setup.
• ✅ Durable & Heavy-Duty Build – Precision-machined & heat-treated components ensure maximum strength & long-lasting performance.
• ✅ Wide Vehicle Compatibility – Designed for Ford Mustang, F-150, Lincoln Continental, Mercury Cougar & more (see full list below).
• ✅ Direct Replacement Fit – Replaces Eaton 187SL17B, Auburn Gear 542036, PowerTrax 1810-LR & other OE parts for a seamless install.