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Flat Rate Shipping on Roof Racks - $99

For a limited time, get any roof rack delivered for a flat rate of just $99. Expand your overlanding capabilities with ARB's sleek range of 4x4 roof racks.

Some exclusions may apply. Valid for orders within the contiguous U.S. only.

Flat Rate Shipping on Bumpers - $99

Get your ARB bumpers delivered straight to your door for a flat rate of just $99. Whether you're upgrading your off-road setup or replacing an old favorite, we've made shipping straightforward and affordable.

Some exclusions may apply. Valid for orders within the contiguous U.S. only.

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Air Locker Differential LR Discovery 3 + 4, FR, 29 SPL RD217

$1,113.95
|

Part Number: RD217

Size Chart
ARB Warranty

ARB Warranty

45-Day Returns

45-Day Returns

Fast Shipping

Fast Shipping

The world's premier traction aid, an ARB Air Locker keep you moving in all conditions. With the flick of the switch an Air Locker gives instant lock at any moment and its super strong design allows activation at any speed allowing you to tackle the toughest terrain. The advantage of the Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the internal differential gears from rotating and therefore prevents the axle shafts from turning independently of each other. With both wheels tied directly to the rotation of the ring gear, the vehicle maintains maximum possible traction at all times. When unlocked, it operates like a conventional open differential. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact. ;

Features & Benefits

  • Provides 100 percent traction on demand without affecting on-road drivability or driveline wear
  • Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver's seat
  • Two-piece design is ultra-durable and extremely strong ? minimal moving parts ensure maximum reliability
  • Patented ?timed' locking mechanism offers high strength and ultra-fast unlocking
  • Steel reinforced, elastomer bonded annular seal designed to handle the most extreme climatic temperatures on Earth
  • Kit includes: Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting
  • Air compressor required for operation (sold separately)
  • Not compatible with vehicles installed with OE lockers
  • Color Silver
  • Material Steel
  • Fitment Info Axle: Land Rover; Position: Front; Shaft: 1.24 in; Spline: 29; Ratio: All
  • Prop 65 No
  • Fitment Info Axle: Land Rover; Position: Front; Clamshell-type; IFS; Shaft: 1.24 in; Spline: 29; Ratio: All
  • Warranty 5 YR
YearMakeModelSubmodelLiterCylindersFuel typeDoors
2005-2009Land RoverLR3HSE4.48GAS4
2005-2009Land RoverLR3SE46GAS4
2005-2009Land RoverLR3SE4.48GAS4
2011-2013Land RoverLR4Base58GAS4
2010-2013Land RoverLR4HSE58GAS4
2012-2013Land RoverLR4HSE Lux58GAS4
2010-2013Land RoverLR4SE58GAS4
2006Land RoverLR3Base46GAS4
2009Land RoverLR3HSE Lux4.48GAS4
2010Land RoverLR4V858GAS4
2014Land RoverLR4Base36GAS4
2014Land RoverLR4HSE36GAS4
2014Land RoverLR4HSE Lux36GAS4
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