The Echo 4179000 Pump Assembly helps support consistent fluid movement in compatible outdoor power equipment, contributing to reliable system operation. Designed as a replacement pump assembly, it moves fluid through the equipment’s designated system as required during operation. Replacing a worn, damaged, or malfunctioning pump can help restore proper fluid flow and reduce performanc... https://www.wholetoolbox.com/echo-4179000-pump-assembly/4179000.html