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Front axle ARB Locking Differential - RD121 fits models:
• Front axle - Toyota Land Cruiser Prado - models produced after 2003
• Front axle - Toyota HiLux, Pickup, Hiace, Fortuner - models produced after 2005
• Front axle - Toyota 4Runner, LN61, YN63 - models produced after 2003
• Front axle - Toyota T100, Tacoma - models produced after 2005
• Front axle - Toyota FJ Cruiser - models produced after 2005
• Front axle - Lexus GX - models produced after 2003
*For gear ratios of 3.91 and higher, use RD111 locking differential
Models: with independent front suspension (IFS)
Internal diameter of satellite gear basket bearings: 53 mm
Crown wheel diameter: 203.20 mm (8")
Axle shaft diameter: 33 mm (1.31")
Number of spline teeth: 30
Gear ratio: 3.73 and lower
For more information on RD121 locking differential parts, refer to the exploded diagrams on the last pages of the locking differential manual - download manual.
