Husqvarna 435 OEM Worm Gear No. 544212402.This is an OEM worm gear that replaces part number 544 21 24-02 and 544-21-24-02. This is the worm gear only.
Husqvarna 455 Rancher Worm Gear No. 537-25-26-01. This is an original equipment worm gear. Replaces part numbers 537252601, 537 25 26 01 and 537 25 26-01