6540-171 Stainless Barb with 6540-263 Oring. : ADAPTER:1/4-18 NPSM TO 3/8 Barb. Used on Sundance Pumps 2000+ Models Pumps Old part number 6540-030 plastic part
Important!
The thread pitch on this item is unique. You cannot buy a standard barb
at a local hardware store or you will damage the threads on your pump.