One New Aftermarket Replacement Reverse Idler Gear Fits Allis Chalmers TractorsThis aftermarket replacement reverse idler gear fits into the transmission and rear axle assembly of Fits Allis-Chalmers (A-C) WC, WF, WD, and WD45 tractors. The gear functions as the idler in the reverse gear train, transferring power to enable rearward movement. It is a precision-fit drivetrain component machined to match the original Fits Allis-Chalmers gear specifications.Specifications Teeth: 24 outer / 20 inner Application: Transmission reverse gear train Compatible ModelsFits Allis-Chalmers (A-C) W-Series Tractors: WC, WFFits Allis-Chalmers (A-C) WD-Series Tractors: WD (Serial Number up to 127007), WD45 (Serial Number up to 127007)Note: For WD and WD45 models, this gear fits Serial Numbers up to and including 127007 only. Verify your serial number before ordering.Replaces Part Number(s):70226113New aftermarket replacement part - not remanufactured, not used.