The Rheem-Ruud 51-104905-08 Module is a genuine OEM replacement part designed for high-efficiency air handlers and furnaces

making it suitable for large-scale HVAC damper actuators and heavy valve assemblies

Attempting to modify the bore will compromise the balance and integrity of the part

Always cross-reference the model number on the compressor nameplate with the manufacturer’s technical datasheet

integrating tamper-resistant bonnet screws and a non-mechanical seat-to-disc alignment for reliable

Laars Heating Systems R0457501 HSI 318973-401 The Rheem-Ruud 51-104905-08 Module isThe Laars Heating Systems R0457501 HSI is a high performance silicon carbide hot surface ignitor engineered specifically for Jandy Legacy LRZE and Teledyne Laars pool heaters. For technicians servicing LRZ models 125, 175, 250, 325, and 400, this OEM component is the standard for restoring reliable ignition sequences. Unlike generic alternatives, this pool heater ignitor is designed to handle the high temperature environment of the burner assembly