Pentair 4"x6" Metal Flue Collar Kit (77707-0076) mermade A gear kit like this

A gear kit like this is useful because it helps restore motion-related internal components that support the cleaner’s drive system and overall movement through the water

The Hydro-Quip Baja Spas slide kit 5

Replacing both together can help restore a cleaner plumbing layout and improve confidence in the overall system connection

A thermowell helps position and protect a temperature-sensing component inside the heater system

Burner tubes are useful because they help support proper combustion performance within the heater

Pentair 4"x6" Metal Flue Collar Kit (77707-0076) mermade A gear kit like thisThe Pentair 4"x6" Metal Flue Collar Kit (77707 0076) is a replacement heater component used with compatible Pentair pool and spa heater systems. The flue collar helps connect and support the heater venting path, making it an important part of safe and proper heater assembly configuration. Because heater components are exposed to heat, airflow, and equipment room conditions, worn or damaged venting parts should be replaced with the correct matching