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ARB Air Locker
for Toyota 8" Clamshell IFS, 3.73 & Down (& “Thick” gears), 30 Spline

ARB Toyota 8" Reverse IFS Short Clamshell ARB

Price: $1,049.00

Product Code: ARBRD121

Description Vehicle Applications Warranty Information

Toyota 8" Reverse IFS
ARB RD121 Air Locker

2003 & Newer Toyota 4Runner
2003-2008 Lexus GX470
2009 & Newer Lexus GX460
2002-2008 Toyota Landcruiser Prado 120
2003-2009 Toyota Hilux Surf
2005 & Newer Toyota Fortuner
2009 & Newer Toyota Landcruiser Prado 150
2005 & Newer Toyota Tacoma
2007-2014 Toyota FJ Cruiser
2005 & Newer Toyota Hilux Pickup

Differential: 8" Rev. IFS Clamshell
Gear Ratio: 3.73 & Down OE, also
Nitro 4.10 4.56 & 4.88 "thick"
Axle Splines: 30
Ring Gear Bolts: 10 (not included)
Manufacturer: ARB
Warranty: 5 Years

Fits Front 8" Clamshell IFS diff found in:
-2005 & Newer Toyota Tacoma
-2005 & Newer Toyota Hilux & Fortuner
-2003 & Newer Toyota LC Prado 120 & 150 series
-2003 & Newer Lexus GX470 & GX470
-2007 & Newer Toyota FJ Cruiser

**This locker fits on models with OEM 3.58 or 3.73 ratio. Also fits Nitro Gear 4.10 4.56 & 4.88 Ratio "thick" Gearsets T8S-410RT-NG, T8S-456RT-NG, T8S-488RT-NG.
**This locker fits on models with OEM 3.58 or 3.73 ratio. Also fits Nitro Gear 4.10 4.56 & 4.88 Ratio "thick" Gearsets P/n T8S-***RT-NG
Required Parts:
These parts are required for installing this product on your vehicle.
CKSA12 air compressor (extremely compact, operates up to 2 air lockers, not intended for oversized tire inflation) or
CKMA12 air compressor (compact, operates up to 2 air lockers and will inflate tires when paired with a 171302) or
CKMTA12 air compressor (still compact, operates up to 2 air lockers when paired with 171503, will inflate tires AND run air tools when paired with a 171302 and will run even faster when paired with a171501 air tank

Optional Parts:
These parts are not required for installing this product on your vehicle.
ALSB3 - bracket for mounting three (3) rocker switches. Manufactured from steel and powder-coated black. (Suitable for moutning both a front and rear air locker and a compressor switch.)

"With our improved two piece design available right across the range, along with the addition of forged gears and an industry leading five year warranty, ARB Air Lockers are now better built and better backed than ever before.

Created to provide 100% traction on demand, without sacrificing any of your vehicle's highway driving performance, ARB Air Lockers employ a 12 volt ARB Air Compressor designed to activate (and deactivate) a solid and durable locking mechanism inside the differential. This gives you the traction you need, when you need it, all at the flip of a switch and all within the comfort of the driver's seat.

The advantage of the ARB Air Locker lies in the pneumatically operated locking system inside the differential. When activated, the Air Locker prevents the 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 just like a conventional 'open' differential.

In addition to providing outright improvements to a 4x4's off road capabilities, the Air Locker offers significant environmental benefits. 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."

ARB Air Locker Animation.
  • Features & Benefits:
  • 5 Year Warranty*
  • Provides 100% traction on demand without affecting on road drivability or driveline wear.
  • Vastly improved traction means less reliance on momentum, which reduces the likelihood of vehicle damage and environmental impact.
  • Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver s seat.
  • Ultra durable and extremely strong - only the highest quality materials used in construction.
  • Incredibly simple yet effective design that employs minimal moving parts, thereby ensuring maximum reliability.
  • Thoroughly tested and proven design trusted and used in over 80 countries around the world.
  • Front and rear Air Lockers available for most makes and models.
  • 4WD & 2WD applications.
  • Easy installation and maintenance no special tools, skills or additives required.

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