OFF-ROAD Diff Lockers & Associated Equipment ARB Diff Lockers, Air Compressors & Equipment Those who enjoy heading off the beaten track in their 4×4 know that even the most familiar tracks can present you with unexpected conditions. Whether you’re up against a steep incline, uneven & rocky terrain or a slippery muddy track, being able to take advantage of traction is one of the most important elements. In a vehicle with open differentials in 4WD mode, drive can only go to two wheels at any given time. At the flick of a switch, an ARB Air Locker can send equal drive to both wheels on an axle allowing you to take advantage of the wheels that have traction and push forward along the track. ARB Diff Lockers > Provides 100% traction on demand without affecting on road driveability or driveline wear > Vastly improved traction means less reliance on momentum, thus reducing the likelihood of vehicle damage and environmental impact > Easy, convenient operation allows the driver to concentrate on the terrain without leaving the comfort and safety of their 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 > Easy installation and maintenance - no special tools, skills or additives required > Two year warranty guarantees the Air Locker will be free of defects in materials Air Locker locking differentials allow you to tackle the toughest terrain. As the world’s premier traction aid, ARB Air Lockers keep you moving in all conditions. Ultra durable and extremely strong - only the highest quality materials used in construction. Notes - 1. If vehicle was manufactured during 1993, check spline count. 2. Air Locker not available for vehicles equipped with high load option. 3. Ring gear spacer required. Longer ring gearbolts (not supplied) are also necessary - (Land Roverpart no. 576521). 4. When an RD127 AirLocker is to be installed in Range Rovers manufactured prior to 1980 (approx.), special carrier bearings (No. K11300/K11162) may also be necessary - Land Rover part no. RTC3426. 5. Some vehicles have crown wheel bolts which cannotbe reused and must be replaced. Consult servicemanual. 6. P38A is most commonly found in traction control equipped vehicles. Identify P38A type diff by large 205mm [8.07”] flange diameter. P38A was not used on North ARB products available in the UK only. American delivered Discoverys - use DA4193. Part Axle Shaft Shaft Number Vehicle/Model Year Location Description Diameter Spline Ratio Series RD1272,3 Series 1 / Series 2 / Series 3 1948 - 1985 Front Rover type 28.2 (1.11”) 10 4.7 RD1272,3 Series 1 / Series 2 / Series 3 1948 - 1985 Rear Rover type 28.2 (1.11”) 10 4.7 Defender RD1271 Defender 90 1984 - 1993 Front Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5 Defender 90 1993 onwards Front Rover type 31.5 (1.24”) 24 3.54 DA4193 1,6 Defender 90 2007 - 2016 Front Rover type 31.5 (1.24”) 24 3.54 RD1271,2 Defender 90 1983 - 1993 Rear Rover type, 4 cyl. petrol & diesel engines 28.2 (1.11”) 10 3.54 DA4193 1,6 Defender 90 1993 onwards Rear Rover type 31.5 (1.24”) 24 3.54 DA4344 6 Defender 90 2002 onwards Rear Rover type, P38A 31.5 (1.24”) 24 3.54 DA4193 1,6 Defender 90 with 2 pin rear diff 2007 - 2016 Rear Rover type 31.5 (1.24”) 24 3.54 DA4344 6 Defender 90 with 4 pin rear diff 2007 - 2016 Rear Rover type, P38A 31.5 (1.24”) 24 3.54 RD1271 Defender 110 / 130 1983 - 1993 Front Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5 Defender 110 / 130 1993 onwards Front Rover type 31.5 (1.24”) 24 3.54 DA4193 1,6 Defender 110 / 130 2007 - 2016 Front Rover type 31.5 (1.24”) 24 3.54 DA4192 Defender 110 / 130 1983 - 2002 Rear Salisbury type 31.5 (1.24”) 24 3.54 DA4193 6 Defender 110 / 130 2002 onwards Rear Rover type 31.5 (1.24”) 24 3.54 DA4344 6 Defender 110 / 130 2002 onwards Rear Rover type, P38A 31.5 (1.24”) 24 3.54 DA4344 6 Defender 110 / 130 2007 - 2016 Rear Rover type, P38A 31.5 (1.24”) 24 3.54 Discovery RD1271 Discovery 1 Up to 1993 Front Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5 Discovery 1 1993 - 1998 Front Rover type 31.5 (1.24”) 24 3.54 RD1271 Discovery 1 Up to 1993 Rear Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5 Discovery 1 1993 - 1998 Rear Rover type 31.5 (1.24”) 24 3.54 DA4193 1,5 Discovery 2 All Front Rover type 31.5 (1.24”) 24 3.54 DA4193 6 Discovery 2 All Rear Rover type 31.5 (1.24”) 24 3.54 DA4344 6 Discovery 2 2002 onwards Rear Rover type, P38A 31.5 (1.24”) 24 3.54 RD217 Discovery 3 All Front IRS, Clamshell type 31.5 (1.24”) 29 All Note- Checkdiff ratio before ordering this part. RD218 Discovery 3 All Rear IRS, Clamshell type 33.6 (1.32”) 31 All Range Rover RD1271,4Range Rover Classic Up to 1992 Front Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5Range Rover Classic 1993 - 1996 Front Rover type 31.5 (1.24”) 24 3.54 RD1271,4Range Rover Classic Up to 1992 Rear Rover type 28.2 (1.11”) 10 3.54 DA4193 1,5Range Rover Classic 1993 - 1996 Rear Rover type 31.5 (1.24”) 24 3.54 DA4344 5Range Rover P38 1996 - 2002 Front Rover type, P38A 31.5 (1.24”) 24 3.54 DA4344 5Range Rover P38 1996 - 2002 Rear Rover type, P38A 31.5 (1.24”) 24 3.54 RD217 Range Rover Sport 2005 - 2013 Front IRS, Clamshell type 31.5 (1.24”) 29 All ARB Diff Cover Defender - rear Salisbury axles. High tensile solid nodular iron structure (tougher and harder than solid carbon steel) protects the differential and ring & pinion set from the obstacle impact hazards of competition rock crawling, or extreme off road trails. More information available online. DA8926 Red 0750001B Black 122