Rheem Water Heater Parts SP20170A Water Heater Gas Control Thermostat/Burner Assembly Retrofit KitSP20170A Water Heater Gas Control Thermostat Burner Assembly Retrofit Kit delivers reliable control for your gas powered Rheem unit. This OEM style retrofit kit is designed for NG (natural gas) systems, providing precise temperature regulation and dependable burner operation. Whether you're repairing, upgrading aging components, or restoring efficiency, this kit replaces worn gas control, thermostat, and burner elements to keep your water hot and your

ensuring straightforward maintenance

By selecting this OEM-compatible replacement

and the swing radius is 2

Designed for seamless Truezone compatibility

Part numbers: NXH518GKA100

With adjustable timing ranges of 1–20 seconds (On) and 40–110 seconds (Off)

Its sound-dampening design contributes to a quieter indoor environment without sacrificing airflow or performance

ensuring smoother starts and longer component life

the easy-wiring design supports quick installation and reliable operation within control circuits

and Thermostat Assembly

reduces risk of misfires

With adjustable timing