ARB Air Locker 10.5-Inch 30-Spline Full Float — Fits 1972-1975 Chevy & GMC 14-Bolt

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Heavy-Duty Traction for GM 14-Bolt Axles

Transform your classic Chevy or GMC truck with the legendary ARB Air Locker, designed for the robust 10.5-inch 14-bolt full-float rear axle. This premium locking differential is the gold standard for off-road traction, offering the driver complete control over when to lock the axle. With a simple pneumatic activation, you can instantly lock your differential to conquer mud, snow, and uneven terrain, ensuring both wheels turn in unison for maximum grip.

Key Features and Performance

• 100% Selectable: Engage or disengage the locker instantly via an in-cab switch.
• Full-Float Compatibility: Engineered specifically for 30-spline 10.5-inch GM 14-bolt axles.
• Durability: High-strength components designed to handle heavy loads and high-torque applications.
• Versatility: Perfect for classic K20, C20, and G-series van builds requiring superior traction.

The ARB Air Locker works by pneumatically locking the side gears to the carrier, forcing both axle shafts to rotate at the same speed regardless of surface traction. This eliminates the limitations of an open differential, allowing you to traverse obstacles that would otherwise stop a standard truck. When unlocked, the differential returns to its open state, maintaining excellent road manners and tire wear characteristics. Whether you are restoring a vintage K20 or building a dedicated trail rig, this locker provides the reliability needed for heavy-duty use. Enhance your vehicle's off-road potential with this professional-grade differential solution from GGCRACING.

…and 263 additional fitments. Contact us to confirm yours.