Super-Pro XtremeBlue A1 C4025/C4030 Filter Cartridge, 4-pack | X15-ULT-A1-M-Q4 C7370 inspect all lateral arms at

inspect all lateral arms at the same time — they are subject to the same mechanical stress and age at the same rate

The Hayward Flame Sensor (IDXLFLS1930) is the OEM replacement flame-sensing component for Hayward Universal H-Series gas pool and spa heaters

featuring a 5/8-inch ID shaft bore

Spas & Hot Tubs: Add 2–4oz directly to water

Your Pentair / Purex CF-105/315 filter requires 3 cartridges for a complete service

Super-Pro XtremeBlue A1 C4025/C4030 Filter Cartridge, 4-pack | X15-ULT-A1-M-Q4 C7370 inspect all lateral arms atSuper Pro aftermarket filter cartridge replacement for use with the Hayward C4025 & C4030 cartridge filters. This is a 4 pack, for full filter servicing. For a single filter cartridge, see here.