ARB Air Locker - Toyota 8.9". Pneumatically-activated 100% locking differential. With the flip of a switch, the Air Locker locks both axle shafts to the ring gear for full traction, then returns to full-open operation when released — zero drivetrain wear, no compromises on-road.

Key Specs

• Application: Toyota 8.9"
• 30-spline axle
• 12-bolt ring gear
• 50mm carrier bearing
• 100% lock — no slip, no clutch packs
• Activation at any wheel speed
• Requires onboard air compressor (sold separately)
• ARB 5-year warranty

Install Notes

• Requires air supply — ARB Medium Duty Air Locker compressor (CKMA12 / CKMA24) or any ARB onboard compressor kit.
• Requires switch, solenoid, and air line kit — included with first-time installation. Subsequent installs may not need these.
• Professional installation strongly recommended — differential rebuild required.