Pentair Flameholder Kit - Model 400 | MasterTemp | 77707-0204 inSPAration The coil/tubesheet sealing O-rings form

The coil/tubesheet sealing O-rings form the critical pressure boundary between the heat exchanger coil and the tubesheet in the MasterTemp 125 combustion and water circuit

always install a freshly lubricated O-ring at the same time — a worn O-ring is the most common cause of leaks at this connection point

Replacing a worn or broken locking bar restores the structural integrity of the cleaner head assembly

⚠️ IMPORTANT: Compatibility Restricted to Models Manufactured in 2001 and Newer

The Pentair 190041 is the OEM replacement filter lid for 44/88 GPM Warrior Filter Systems

Pentair Flameholder Kit - Model 400 | MasterTemp | 77707-0204 inSPAration The coil/tubesheet sealing O-rings formThe Pentair Flameholder Kit (77707 0204) is the OEM replacement flameholder assembly for the MasterTemp 400 gas heater burner system, covering both natural gas (400NA) and liquid propane (400LP) configurations. IMPORTANT: KIT LISTING MULTIPLE COMPONENTS INCLUDED This listing is a kit, not a single component. It includes Item Nos. 10, 11, 12, 13, and the Flameholder Insert as a complete assembly. Verify all included items against your equipment's