ARB's World Renowned
            Air Locker Locking Differential.

HOW THE AIR LOCKER WORKS

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.

CJ(5, 6, 7 & 8), Wrangler, YJ, TJ, Mini-Wagoneer, Mini-Cherokee, XJ, ZJ, WJ & Australian Vehicles e.g., XJ Cherokee Sport & Limited ZJ Grand Cherokee

Front

1971 on

Dana 30

29.5 (1.16")

27

3.73 & Up

RD30⁴

3.54 & Dn

RD31⁴

Rear

1990-98

Dana 35¹, C-clip, XJ, YJ, ZJ, TJ

29.5 (1.16")

27

2.73-3.31

RD68⁴

3.54 & Up

RD69⁴

1997-00

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

30.7 (1.21")

29

All

RD93

1997 on

Dana 44, TJ & WJ model only

33.3 (1.31")

30

3.92 & Up

RD06³

3.73 & Dn

RD07³

1985-89

Dana 35¹, non C-clip

29.5 (1.16")

27

2.73-3.31

RD38

3.54 & Up

RD39

1978-89

Dana 44, Comanche truck

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1986-91

Dana 44, XJ w/ metric ton package

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1987-mid 87

Dana 44, XJ utility

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1976-86

AMC Model 20, 87/8" dia. r.g

31.8 (1.25")

29

3.08 & Up

RD60

2.73 & Dn

RD47⁶

1969-75

Dana 44-3R

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1966-68

Dana 44-R

31.8 (1.25")

19

3.92 & Up

RD18²

Jeep Liberty KJ

Front

2001 on

Dana 30³

NA⁵

Rear

2001 on

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

30.7 (1.21")

29

All

RD93

Grand Wagoneer, Full size AMC Cherokee

Front

1974 on

Dana M44-1F

33.3 (1.31")

30

3.92 & Up

RD06³

3.73 & Dn

RD07³

1971-73

Dana 30

29.5 (1.16")

27

3.73 & Up

RD30

3.54 & Dn

RD31

Rear

1986 on

Dana 44

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1980-86

AMC Model 20, 87/8" dia. r.g.

31.8 (1.25")

29

3.08 & Up

RD60

2.73 & Dn

RD47⁶

1969-79

Dana M44-3R

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1966-69

Dana M44-R

31.8 (1.25")

19

3.92 & Up

RD18²

3.73 & Dn

RD19²

J10, Light Truck FC150, 170 Honcho

Front

1971 on

Dana 44-1F

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

Rear

1980-86

AMC Model 20, 87/8" dia. r.g.

31.8 (1.25")

29

3.08 & Up

RD60

2.73 & Dn

RD47⁶

1970-79

Dana M44-R

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

1966-69

Dana M44-R

31.8 (1.25")

19

3.92 & Up

RD18²

3.73 & Dn

RD19²

J20, Medium Truck J30, Heavy Truck

Front

1970-88

Dana M44-1F

33.3 (1.31")

30

3.92 & Up

RD06

3.73 & Dn

RD07

Rear

1974-88

Dana M60-3R

33.3 (1.31")

30

4.56 & Up

RD21

4.10 & Dn

RD22

1969-73

Dana M60-2R

38.1 (1.50")

35

4.56 & Up

RD35