Oil Pump Worm Gear for Stihl 038 MS380 MS381 Chainsaw 

Fits Stihl chainsaw models:

038, 038 AV, 038 Super, 038 Magnum, MS380, MS381

Does not fit Stihl MS360, MS361, MS440, MS460, MS660, or 044, 046, 066 chainsaw models.