Powertrax 1821-LR Lock-Right Locker; Ford 8.8" axle w/ any gear ratio, 3/4" cross-shaft, and 31-spline shafts
Updated: Aug 10, 2026 Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product.
The Powertrax Lock-Right locker (part # 1821-LR) for the Ford 8.8" axle (with any gear ratio, 3/4" cross-shaft, and 31-spline shafts) is easily installed in existing case assemblies without any special tools or setup equipment. The Lock-Right locker has been extensively used in extreme off-road applications around the world demanding 100% traction output and high-strength. The Lock-Right locker eliminates wheel spin-up and therefore all associated driveline stress is eliminated, which in effect strengthens the differential case and other driveline components. Cases that are prone to failure with open or limited-slip differentials become one of the strongest links in the drive train when equipped with a Powertrax Lock-Right locker.
Powertrax 1821-LR is for use on 1987 and newer Ford 8.8" axles with any gear ratio with 31-spline shafts and a 3/4-inch diameter cross-shaft
Advantages of a Lock-Right locker
- Positive Gear Action: No friction plates are used so there's nothing to wear out.
- Automatic Operation: No need to engage or disengage the Lock-Right unit and it automatically operates in forward or reverse.
- Strong and Durable: Locks tight for use in the toughest situations.
- Easy Installation: Requires minimal tools and time for installation. You can install it at home.
- No Special Fluids: No special lubricants or adjustments required to operate the unit.
View the entire Powertrax Application Guide.
