GM 8.875in 12 Bolt Car Installation Kit

The GM 8.875in 12 Bolt Car Installation Kit from DETROIT LOCKER-TRACTECH is a purpose-built differential upgrade solution designed for General Motors vehicles equipped with 8.875-inch 12-bolt rear axles. This kit serves users who demand maximum traction, load-bearing capability, and differential performance in both street and heavy-duty applications. Whether you're upgrading a performance vehicle, preparing for off-road terrain, or reinforcing a work truck, this installation kit provides the mechanical foundation necessary to optimize power delivery and axle durability under demanding conditions.

DETROIT LOCKER-TRACTECH specializes in precision-engineered differential components, and this 12 Bolt installation kit incorporates their expertise in mechanical lock and limited-slip technology. The kit includes all fasteners, shims, bearing races, and installation components required for proper axle assembly, weighing 6.08 lbs and dimensioned to fit standard 8.875-inch 12-bolt housings. Proper installation ensures correct gear mesh, backlash, and preload—critical factors that determine differential longevity, noise levels, and power transmission efficiency. The kit's compact design (11.65 x 2.3 x 12.2 inches) integrates seamlessly into OEM housing architecture without modification to donor vehicles.

This installation kit is essential for GM vehicle owners performing differential rebuilds, locker upgrades, or axle maintenance on platforms including Camaro, Chevelle, C-10 trucks, and other muscle and classic cars featuring 8.875-inch 12-bolt rear ends. Professional mechanics, restoration shops, and experienced enthusiasts benefit from the complete component set, which eliminates the need to source individual fasteners and bearing hardware separately. Installation requires axle removal and should be performed by technicians familiar with differential assembly procedures; improper installation may result in noise, vibration, or component failure. Verify fitment with your specific vehicle's axle configuration before ordering.