The ARB Air Locking Differential is a complete system. All components are designed & manufactured to ensure reliability, durability and ease of fitment. Complete, front & rear system shown.

Control  switches mount neatly into the dash or console for easy, push button operation.

ARB's World Renowned
Air Locker Locking Differential.

HOW THE AIR LOCKER WORKS

The ARB Air Locker is an air operated, driver controlled differential lock activated by pushing a dash mounted button.

When the dash mounted button is pushed, compressed air, delivered by the ARB 12 volt, on board air compressor is passed via a 12 volt solenoid down an air line into the differential housing. The air travels into the differential center via a specially designed seal housing which seals against an extended bearing spigot.

Via air galleries, the compressed air enters the piston chamber and actuates the piston and clutch gear, moving the gear into the locked position. The clutch gear now locks the side gear to the differential housing instantly stopping any differential action. The diff is now 100% locked, and both axles will deliver 100% traction.

To disengage the differential the dash mounted switch is again pushed, which releases the compressed air via the solenoid and the piston springs return the piston to its original position. The differential is then fully open allowing full, standard differential action.

The ARB Air Locker only takes a split second to engage, making it the only, truly, driver controlled, differential locking system.

Dodge

100, 150, 200, 250, A, B, D, W

Front

All

Dana 44, 1/2 ton truck

33.3 (1.31")

30

3.91 & Up

3.93 & Dn

1975 on

Dana 60, 3/4 ton truck

33.3 (1.31")

30

4.56 & Up

4.10 & Dn

1989-93

Dana 70, 3/4 ton truck

35.8 (1.41")

32

4.56 & Up

4.10 & Dn

1988-95

Dana 60HD, 3/4 ton truck

38.1 (1.50")

35

4.56 & Up

1971-82

4.10 & Dn

Rear

1994 on

Dana 70, 3/4 ton truck

35.8 (1.41")

32

4.56 & Up

4.10 & Dn

1991 on

Dana 70U, 3/4 ton truck

38.1 (1.50")

35

4.56 & Up

4.10 & Dn

1983 on

Dana 60¹

33.3 (1.31")

30

3.54

1972-82

Dana 60

33.3 (1.31")

30

4.56 & Up

4.10 & Dn

300, 350, 400, B, C, M, W

Front

1976-95

Dana 60HD

38.1 (1.50")

35

4.56 & Up

4.10 & Dn

1971-74

Dana 70

35.8 (1.41")

32

4.56 & Up

4.10 & Dn

1955 on

Dana 60

33.3 (1.31")

30

4.56 & Up

4.10 & Dn

Rear

1979-00

Dana 70HD

38.1 (1.50")

35

4.56 & Up

4.10 & Dn

1971-93

Dana 70

35.8 (1.41")

32

4.56 & Up

4.10 & Dn

1993 on

Dana 80

38.1 (1.50")

35

All

1994 on

Dana 80

40.6 (1.60")

37

All

Dakota V6,

1500/2500 Van

Front

1997 on

Dana 30

29.5 (1.16")

27

Rear

1997 on

Chrysler 81/4" dia. r.g., C-clip

30.7 (1.21")

29

All