Zodiac R0456800 Polymer Header High-Limit Plug Replacement for Select Zodiac Jandy Legacy and LXi Pool and Spa Heaters, Set of 3 Polymer header high-limit plug replacement Fits Zodiac Jandy Legacy LRZE, LRZM pool and spa heater models 125, 175, 250, 325, 400 Also fits Zodiac Jandy LXi Low NOx pool and spa heater models 250, 300, 400 Includes 3 plugs per set