Husqvarna 503 10 49-02 OEM Worm Gear for 40, 45, 49, 50, 51, 55 Chainsaws 503104902
HVP 503 10 49 02
OEM worm gears are a high quality replacement option for your Husqvarna chainsaws. Worm gears (also known as pinion gears) are one of those wear items that get little attention until they quit working. Like all moving parts, they will eventually give out with prolonged use and need to be replaced, especially when running low quality bar oil or used motor oil. We recommend having a couple of spares around.