SeaTech"s permanent by-pass kits allow you to winterize your system and save 6 to 10 gallons of anti-freeze when by-passing the water heater. SeaTech"s quick connect technology saves time without the need of installation tools. SeaTech"s robust high performance plastic fittings are taste and odor free, freeze resistant, corrosion proof, and will last the life of your system. 8 INCH BY-PASS KIT MFG# 35WK-03 35WK03 UPC# 000352311038