ARB Airlocker Dana30 27Spl 3.73&Up S/N.

ARB Air Locker for Dana 30 differentials. Instantly locks for maximum traction when you need it, operates as an open diff when unlocked.

Key Features

• 27 spline count — fits Dana 30 differentials.
• Designed for 3.73 and numerically higher gear ratios.
• Pneumatically operated locking system — provides instant lock-up.
• Prevents independent gear rotation — ensures both wheels turn at the same speed.
• Operates as an open differential when unlocked.
• Activation possible at any speed.