Yukon Grizzly Locker for GM 10.5″ 14 bolt truck with 30 spline axles

YGLGM14T-30 Yukon Grizzly Locker for GM 10.5″ 14 bolt truck with 30 spline axles The Yukon Grizzly Locker is the ultimate in mechanical locking differentials for street, off-road, and drag racing. Grizzly Lockers provide 100% power to both tires, while still allowing for disengagement while negotiating turns. 8620 internals for added strength Assembled in the USA Fits GM 10.5″ 14 bolt truck Installs into standard open carrier Patented internal design reduces common locker failures Technical Notes: This unit installs into a bare factory open case. This unit does NOT use the factory thrust washers. Failure to remove the factory thrust washers will cause the unit to act improperly and can cause damage to the unit. Manufacturer: Yukon Grizzly Locker Weight: 9.97 lbs Shipping Length: 6 inches Shipping Width: 6 inches Shipping Height: 6 inches COMPATIBLE DIFFERENTIALS GM 10.5" 14 Bolt Truck, '84-'85 Only GM 10.5" 14 Bolt Truck, '88 & older (excluding '84-'85) GM 1