This control arm is highly specific to the HRX217 lineup. It works with several variations of this model, typically those equipped with hydrostatic transmissions (HMA, HXA, HYAA, HZAA). Primary Function: Acts as a linkage component within the transmission system to regulate drive engagement or speed changes. Commonly Used With: Often replaced alongside the control arm return spring (part #24134-VE5-A00) or related spring pins. Fits Models: * HRX217 (HMA, HXA, TDA) HRX217K1 through K6 (HYAA, HZAA, HYA, HZA versions)