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Help! What is this part called? I think it is part of the heater core, but can't find it in any parts diagrams. Was leaking coolant, and when I touched it I
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Heater Core
How To Replace a Heater Core
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Heater core - Wikipedia
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Beginner's Guide: What Is a Car's Heater Core and What Does It Do? - Haynes Manuals
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Heater core - Wikipedia
