GM 12-Bolt Spartan Locker — 30 Spline

Drop-in mechanical automatic locker for GM 12-Bolt axle applications. Replaces your open carrier's spider gears — no special tools, no carrier removal required. Includes heavy-duty cross pin shaft.

Features

• Lunchbox-style drop-in — replaces spider gears in existing carrier
• Fully mechanical — no cables, airlines, or electronics
• Includes heavy-duty cross pin shaft
• Automatic locking and unlocking in turns
• Built for off-road, rock crawling, and trail use

Specifications

Compatible Vehicles

• Chevy C/K 10/20 Truck (1964–1987, Rear)
• Chevy Camaro (1965–1972, Rear)
• Pontiac Firebird (1967–1972, Rear)
• Chevy Chevelle/El Camino (1965–1972, Rear)
• Chevy Nova (1968–1972, Rear)
• Chevy Corvette (1965–1979, Rear)
• Pontiac GTO (1965–1972, Rear)
• Buick GS/Skylark (1964–1972, Rear)