Yukon Gear Grizzly Locker For GM 8.5in & 8.6in / 30 Spline / 2.73+

The Yukon Grizzly Locker is the ultimate in locking differentials for street; off-road;/drag racing. Grizzly Lockers provide 100% power to both tires; while still allowing for disengagement while negotiating turns. The Yukon Grizzly locker is a mechanical locking differential. It features 8620 internals for maximum strength. It s patented design reduces common locker failures. All units assembled in the USA! All Grizzly Lockers are backed by the best warranty in the business! Yukon covers the replacement unit and covers any collaterally damaged parts and associated labor; up to $2;000!This Part Fits: Year Make Model Submodel 1980-1989 Buick Electra Estate Wagon 1980-1989 Buick Electra Limited 1980-1989 Buick Electra Park Avenue 1989 Buick Electra Park Avenue Ultra 1985-1989 Buick Electra T-Type 2004-2007 Buick Rainier CXL 2004-2005 Buick Rainier CXL Plus 1980-1987 Buick Regal Base 1982-1983 Buick Regal Estate Wagon 1987 Buick Regal GNX 1984-1987 Buick Regal Grand