{"product_id":"nissens-707278-hvac-heater-core","title":"Nissens 707278 HVAC Heater Core","description":"\u003ch2\u003eNissens HVAC Heater Core 707278\u003c\/h2\u003e\u003cp\u003eThe Nissens 707278 HVAC heater core is built to OE specifications for select Audi and Volkswagen applications. It uses aluminum construction with brazed cooling fins to support consistent heat transfer and a precise fit in the HVAC module cassette.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eAluminum core and aluminum tank construction\u003c\/li\u003e\n\u003cli\u003eBrazed cooling fins for efficient heat exchange\u003c\/li\u003e\n\u003cli\u003e0.75 in inlet and outlet pipe diameters\u003c\/li\u003e\n\u003cli\u003eNormal design for direct HVAC heater core replacement\u003c\/li\u003e\n\u003cli\u003eFinished to fit smoothly into the mounting cassette on the HVAC module\u003c\/li\u003e\n\u003cli\u003ePart number 707278 for easy identification\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Description\u003c\/h2\u003e\u003cp\u003eNissens heater cores are manufactured and tested to OE specifications, with life testing that includes vibration, pressure impulse, thermal expansion, corrosion, and burst evaluation. This process helps reduce the risk of leakage, poor cabin heat output, and residue-related contamination. The 707278 heater core is a direct-fit HVAC heater core for vehicles including the Audi Q3, Volkswagen Golf R, Volkswagen GTI, Audi TT Quattro, Audi TTS Quattro, Volkswagen Arteon, and Audi TT RS Quattro. This part cross-references OE number 5WA819031 for the same application.\u003c\/p\u003e\u003ch2\u003eWhat It Helps Address\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWeak or uneven cabin heat\u003c\/li\u003e\n\u003cli\u003eCoolant leakage at the heater core\u003c\/li\u003e\n\u003cli\u003eRestricted heat transfer from corrosion or internal buildup\u003c\/li\u003e\n\u003cli\u003eHVAC performance loss caused by a damaged core\u003c\/li\u003e\n\u003cli\u003eFitment issues during heater core replacement on select Audi and Volkswagen models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the core dimensions before installation: 170 x 163 x 26 mm, with 0.75 in inlet and outlet pipe diameters. Confirm the HVAC module cassette condition, inspect hoses and seals, and flush the cooling system if contamination is present. This heater core does not include pipes.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eNissens manufactures and tests this heater core to OE-level specifications using durability and leak-focused validation methods. The aluminum construction and brazed fin design are intended to support reliable heat transfer and consistent fitment in the HVAC system.\u003c\/p\u003e","brand":"Nissens","offers":[{"title":"Default Title","offer_id":52725015183541,"sku":"BKMH-707278","price":118.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/N1_707278_Fro.jpg?v=1782022703","url":"https:\/\/www.partcatalog.com\/products\/nissens-707278-hvac-heater-core","provider":"PartCatalog","version":"1.0","type":"link"}