Husqvarna 51, 50 Chainsaw, Piston Kit, 45mm Replaces Part# 503167701 Tooling Ships From Usa HUSQVARNA 51, 50 CHAINSAW, PISTON KIT, 45MM REPLACES PART# 503167701 **Family run business with 25 years of repair experience and parts sales **We strive to provide high quality parts and excellent customer service! NOT MADE IN CHINA OR TAIWAN