Raypak R405 Brass Heat Exchanger Assembly (005251F)

Raypak R405 Brass Heat Exchanger Assembly (005251F) is a Raypak replacement heat exchanger assembly for R405 heater applications. This item is best used when the original component is damaged, deteriorated, missing, or no longer performing correctly. Because many Raypak heater parts look similar across model families, the safest ordering approach is to match the complete part number 005251F, the heater model, and any ignition, voltage, fuel, or cabinet details shown on the existing unit.

This component helps support a proper service repair when troubleshooting heat performance. The brass heat exchanger construction is used in the water-heating section where durability, water contact, and proper heat transfer are critical. Always compare the part number, model family, and heater configuration before ordering, especially on older Raypak units with similar model names. For heater repairs, installation should follow the manufacturer service procedure and local code requirements. Before replacing the part, inspect nearby gaskets, fasteners, wiring, headers, combustion components, and venting surfaces so the repair does not leave a related failure point unresolved.

• Replacement heat exchanger assembly for the Raypak model/application listed in the product title.
• Use part number 005251F to verify fit before ordering or installing.
• Helpful for service repairs involving heat transfer, burner, cabinet, venting, control, or safety-related heater components.
• Recommended for professional installation when gas, electrical, or combustion-system work is involved.
• Compare the original part, heater rating plate, and service manual to confirm the correct configuration.