ARB RD166 Air Locker Differential for 99-24 F-250/F-350 Dana 60HD 35-Spline
- Regular price
-
$1,399.95 - Regular price
-
$1,399.95 - Sale price
-
$1,399.95
In Stock: 8
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Product Specification:
SKU:ARBRD166
MPN: RD166
UPC: 881348012210
Weight: 41.7 lb
Inventory: 8
Type: Differentials
Vehicle Fitment
- 1999-2024 Ford F-250 Super Duty (Dana 60HD Front Axle, 35-Spline, 4.56 & Up Gear Ratios)
- 1999-2024 Ford F-350 Super Duty (Dana 60HD Front Axle, 35-Spline, 4.56 & Up Gear Ratios)
Features
- Provides 100% traction on demand without affecting on-road drivability
- Pneumatically operated locking system for instant engagement
- Two-piece design with minimal moving parts ensures maximum reliability
- Patented 'timed' locking mechanism offers high strength and ultra-fast unlocking
- Steel-reinforced, elastomer-bonded annular seal handles extreme temperatures
- Compatible with ARB air compressors (sold separately)
- Designed and manufactured in Australia for rugged off-road conditions
- Backed by ARB's comprehensive 5-year warranty
Specifications
- Part Number: RD166
- Axle Type: Dana 60HD
- Axle Spline Count: 35 Spline (Ø38.1mm / 1.50")
- Gear Ratio Compatibility: 4.56 and Up
- Ring Gear ID: 162.0mm (6.38")
- Ring Gear OD: 248mm (9.75")
- Ring Gear Bolts: 12 bolts on Ø191mm (7.50") circle
- Ring Gear Torque Spec: 149Nm (110 ft-lb)
- Backlash: 0.15-0.25mm (0.006-0.010")
- Bearing Cap Torque: 108Nm (80 ft-lb)
- Position: Front Differential
- Material: High-grade steel
- Color: Silver
- Warranty: 5 Years
Included Components
- 1 x ARB RD166 Air Locker Differential
- 1 x Activation Switch
- 1 x Solenoid Valve
- Air Lines and Bulkhead Fittings
- Installation Guide and User Manual
Product Description
The ARB RD166 Air Locker Differential is engineered to enhance the off-road capability of your Ford F-250 or F-350 Super Duty equipped with a Dana 60HD front axle and 35-spline shafts. Designed for gear ratios of 4.56 and up, this air locker provides 100% traction on demand, allowing you to tackle challenging terrains with confidence.
When engaged via a dash-mounted switch, the RD166 uses compressed air to lock the differential, ensuring both wheels turn in unison for maximum traction. Its robust two-piece design minimizes moving parts, enhancing reliability and longevity. The patented 'timed' locking mechanism ensures rapid engagement and disengagement, while the steel-reinforced, elastomer-bonded annular seal withstands extreme temperatures and conditions.
Compatible with ARB's air compressor systems (sold separately), the RD166 is a must-have upgrade for off-road enthusiasts seeking improved performance without compromising on-road drivability. Whether navigating rocky trails or slippery slopes, the ARB RD166 Air Locker delivers the traction you need when you need it most.













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