ARB 4X4 Accessories AMC Model 20 Air Locking Differential, Front 29 Spline (2.73-) RD187 For Use With 29 Spline Axles;For Use Wih 2.73 And Down Gears;Air Activated Selectable Locker; Converts From Open Differential To fully Locked Or Spool; Simple Push Button Operation; Requires Air Compressor Sold Separately ARB 4x4 Accessories ARB AMC Model 20 2.73 Down Air Locking Differential - RD187 RD187 Differentials
