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The Rinnai 104000033 Heat Exchanger Kit is designed for use with the Rinnai R75LSe model. This kit includes a heat exchanger, O-rings, and packings. It is a genuine OEM replacement part and is essential for maintaining the efficiency of your water heater. Verify the part number is correct for your model before ordering.
Genuine Rinnai heat exchanger kit including O-rings and packings designed for select Rinnai water heater models.
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