Australia-wide shipping on performance, 4x4 and vehicle-specific upgrades.

Arb

ARB Airlocker 11.5In 30 Spl Aa&M S/N.

SKU: ARBRD139

Differential Carriers

ARB Air Lockers

Arb

ARB Airlocker 11.5In 30 Spl Aa&M S/N.

SKU: ARBRD139

Differential Carriers

ARB Air Lockers

A$2,650.07
IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
View cart
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

The world's premier traction aid, an ARB Air Locker(TM) 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.

Product Overview

The world's premier traction aid, an ARB Air Locker(TM) 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 and Benefits

  • Employs Minimal Moving Parts Ensuring Maximum Reliability
  • 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)

Product Details

Add-On:N/A
Color:Silver
Description:Air Locker Differential
Fitment Info 1:Axle: AAM 11.5 in; Postion: Rear; Shaft: 1.56 in; Spline: 30; Ratio: All
Material:Steel
Part Number:arbRD139
Prop 65 Yes/No:No
Title:ARB - RD139 - Air Locker Differential
WARNING CA Proposition 65:No

Application Summary

S/N...

Part Type

Differential

Data: v4.2 - Upd: 2026-10-12 01:27:56

Features

  • Air compressor required for operation (sold separately)
  • Easy, convenient operation allows the user to concentrate on the terrain without leaving the comfort and safety of the driver's seat
  • Employs Minimal Moving Parts Ensuring Maximum Reliability
  • Kit includes: Air Locker differential, activation switch, solenoid valve, air line and bulkhead fitting
  • Patented ?timed' locking mechanism offers high strength and ultra-fast unlocking
  • Provides 100 percent traction on demand without affecting on-road drivability or driveline wear
  • Steel reinforced, elastomer bonded annular seal designed to handle the most extreme climatic temperatures on Earth
  • Two-piece design is ultra-durable and extremely strong ? minimal moving parts ensure maximum reliability

Specifications

Product Attributes - UPC
881348011909
Product Attributes - Brand
ARB
Product Attributes - Quantity
Sold as a kit.
Product Attributes - Part Type
Differential Carriers
Product Attributes - Product Line
ARB Air Locker Differentials
Product Attributes - Carrier Material
Nodular iron
Product Attributes - Aftermarket Carrier Style
Air locker
Product Attributes - Carrier Bearings Included
No
Product Attributes - Axle Shaft Spline Quantity
30
Product Attributes - Manufacturer's Part Number
RD139
Product Attributes - Differential Case Design Type
AAM 11.5 in. 14-bolt

Reference Information

Brand Name/s Arb
StreetFX SKU arbRD139
SFX Item ID 4383551
Supplier Item Code 4383551
Manufacturer SKU RD139
Manufacturer UPC 881348011909
Alternative References 11.5In

Compatibility

S/N...

Loading compatibility information...

Keep shopping

More from Arb