The 400-5491B Waterway Heater Part is an essential component for keeping your heater running smoothly. It has a 1-1/2" Split Nut With Screws and can replace most 1.5" split nut heater unions, including those from Balboa, Gecko, Hydro-Quip, Spa Builders, Correct-Tech, and many others. It is not intended for use with spa pumps – it is only for heaters. Make sure your heater operates at its best performance by replacing old or broken parts with the 400-5491B Waterway Heater Part. It will ensure that you get the most out of your heating system.

• Color - Black
• Heater Union Part Type - Split Nut
• First Plumbing Connection Size - 1-1/2"
• First Plumbing Connection Type - Female Buttress Thread (fbt)
• Replaces most 1.5" split nut heater unions, including balboa, gecko, hydro-quip, spa builders, correct-tech and many others

Fitment guidelines:
For use with Spa Hot Tub Heater and Waterway Above-Ground In-line Chlorinator

Additional Information:
Alternate part numbers - 121108015, 400-5421, 4005491, 415-4021, 415-4050, 415-4051, 415-4051B, 415-5461, 42-0007B, 700400, 806105081896, RPL1-15-201S, WW4005491B, WWP-851-8088, WW4005421B