Description
Part number RD167, the ARB® Air Locker for the Dana 60HD axle, is a 35-spline, 4.10-and-down air-operated locking differential available in rear and front positions, covering the 1996–2022 Ford F-250 Super Duty, F-350 Super Duty, legacy F-250, F-350, F-250 HD, E-Series, and the 1996–2003 Dodge Ram 2500 and 1998–2003 Ram 3500.
IMPORTANT: Several axle shaft variants were used across the covered vehicle range — verify your axle’s spline count prior to ordering. Additionally, reverse-rotation Dana 60 front ends fitted with aftermarket ring and pinion sets may require RD166 or RD167; the correct unit is determined by the ring and pinion, not the vehicle. Confirm your axle configuration before purchase.
The ARB Air Locker is the world’s premier on-demand traction aid, delivering a full 100 percent differential lock at the flick of a switch without any impact on open-road drivability or driveline wear. When activated, the pneumatically operated locking mechanism prevents the internal differential gears from rotating independently, tying both wheels directly to the rotation of the ring gear for maximum possible traction. When disengaged, the unit reverts to a conventional open differential, preserving normal handling characteristics on pavement.
The Air Locker’s locking system operates via air pressure supplied through a solenoid valve and airline, allowing instant engagement from inside the cab at any speed. ARB’s patented timed locking mechanism ensures high-strength engagement and ultra-fast unlocking response. The steel-reinforced, elastomer-bonded annular seal is engineered to withstand the most extreme climatic temperatures encountered in off-road use worldwide.
The two-piece differential housing is constructed from steel and designed for maximum strength with minimal moving parts, reducing mechanical complexity and improving long-term reliability. The Air Locker allows a vehicle to be driven in a slower, more controlled manner on difficult terrain, reducing the likelihood of vehicle damage and environmental impact. ARB backs this unit with a 5-year warranty.
- Fitment: Dana 60HD axle (full-float rear, standard rear, and front applications); 35-spline; 1.50 in. shaft diameter; 4.10 ratio and down. Covers: 1999–2022 Ford F-250 Super Duty | 1999–2022 Ford F-350 Super Duty | 1996–1999 Ford F-250 | 1997–1997 Ford F-250 HD | 1997–1997 Ford F-350 | 1999–2008 Ford E-350 Super Duty | 1997–2002 Ford E-350 Econoline Club Wagon | 1997–1998 Ford E-350 Econoline | 2003–2005 Ford E-350 Club Wagon | 1997–2002 Ford E-250 Econoline | 2003–2014 Ford E-250 | 2008–2013 Ford E-150 | 1996–2003 Dodge Ram 2500 | 1998–2003 Dodge Ram 3500
- Delivers 100% differential lock on demand without affecting open-road drivability or driveline wear
- Pneumatically operated locking system activates instantly from the driver’s seat at any speed
- Patented timed locking mechanism provides high-strength engagement and ultra-fast disengagement
- Two-piece steel construction with minimal moving parts for maximum durability and reliability
- Steel-reinforced, elastomer-bonded annular seal rated for extreme climatic temperatures
- Kit includes: Air Locker differential, activation switch, solenoid valve, air line, and bulkhead fitting
- Air compressor required for operation — sold separately
- Warranty: 5 years
- Sold individually
| Part Number | RD167 |
| Brand | ARB |
| Axle | Dana 60HD (Full Float Rear, Standard Rear, Front) |
| Position | Rear / Front |
| Spline Count | 35 |
| Shaft Diameter | 1.50 in. |
| Ratio Coverage | 4.10 and Down |
| Color | Silver |
| Material | Steel |
| Warranty | 5 Years |
| Price | $1,399.95 |
The RD167 is engineered for the Dana 60HD axle in 35-spline, 4.10-and-down configuration, covering rear and front positions. Covered vehicles: 1999–2022 Ford F-250 Super Duty | 1999–2022 Ford F-350 Super Duty | 1996–1999 Ford F-250 | 1997 Ford F-250 HD | 1997 Ford F-350 | 1999–2008 Ford E-350 Super Duty | 1997–2002 Ford E-350 Econoline Club Wagon | 1997–1998 Ford E-350 Econoline | 2003–2005 Ford E-350 Club Wagon | 1997–2002 Ford E-250 Econoline | 2003–2014 Ford E-250 | 2008–2013 Ford E-150 | 1996–2003 Dodge Ram 2500 | 1998–2003 Dodge Ram 3500. Note: If your vehicle is equipped with a reverse-rotation Dana 60 front axle and an aftermarket ring and pinion, selection between RD166 and RD167 is determined by the ring and pinion gear — verify your gear set before ordering.