Powertrax Lock-Right 1822 Ford 8.8" differential locker. Powertrax Lock-Right Lockers are brute force devices for rugged truck applications. Best suited for extreme off-road to severe on-road truck applications. Proven in the most demanding applications worldwide. The Lock-Right has been used in the harshest conditions by hard-core off-roaders, in towing applications, and even United nation vehicles in rugged terrain. Provides the best value for greatly increasing the traction of both 2 wheel and 4 wheel drive trucks. Designed for the Ford 8.8" differential with 10 bolt cover and 31 spline axles. Because the Lock-Right eliminates wheel spin, its associated driveline trauma is negated. The strength and integrity of the surrounding original case and other driveline componets are substantially increased. Cases that occasionally fail with open or limited slip-posi differentials become one of the strongest links in the drivetrain when equipped with the Powertrax Lock-Right Locker. The Lock-Right's operation is fully automatic. Designed to send the engine power to the wheels with the most traction, the lock-Right will help get you where you want to go. While traveling straight the Lock-Right will lock the axles together similar to a spool. However, when the wheels need to differentiate in a turn, the Lock-Right will allow the outside wheel to rotate faster to complete the turn. The internal gears on the Lock-Right will overrun each other to allow this differentiation. The Lock-Right will always send the engine power to the wheel that needs it most. For example, if you are on a slippery surface with one wheel slipping, the other wheel will recieve the engine power and keep you going. Whether it be snow, sand, mud, ice, etc, the Lock-Right will give you the traction you need. Installation is simle because the ring and pinion setups are not altered. you are simply replacing the spider gears in your existing, stock differential case. No special tools or oils are required for installation. Can be installed by a good home mechanic. Detailed, model specific installation instructions are included. NOTE: In some vehicles, you may hear a light clicking noise as the gears are overruning themselves and allowing the wheels to differentiate in a turn. This is normal. For quiter, smoother operation, we recommend the Powertrax Traction system, found in the truck section of this website. Powertrax Lock Right 1822 1987-2001 Ford truck 8.8 differential locker 1822APPLICATIONS:: 1987-1996 F-250 8.8 REAR1987-2001 F-150 8.8 REAR1999-2001 F-150 8.8 FRONT1991-2001 EXPLORER 8.8 REAR1997-2000 EXPEDITION 8.8 REAR1987-1996 BRONCO FULLSIZE 8.8 REAR We welcome CANADIAN customers! For ordering information, click on "Canadian Order Info" at the top left side of this page. LOW COST SHIPPING! Just $12.95 to ship your entire order by U.P.S. ground within the continental United States. Purchase any quantity of items and you pay just $12.95 to have it shipped! The more you order, the more you save! (Orders to Hawaii, Puerto Rico, Virgin Islands, and some parts of Alaska will have additional shipping charges. Customers located in these areas will be emailed the shipping costs for approval before we ship the order.) We use Postal Priority for APO and FPO addresses only. Additional shipping charges may apply to these addresses.