{"product_id":"aluminum-radiator-for-lincoln-navigator-2003-2004-5-4l","title":"Aluminum Radiator for Lincoln Navigator (2003-2004) 5.4L","description":"\u003ch2\u003eHeavy-Duty 4-Row Aluminum Radiator for 2003-2004 Lincoln Navigator\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eEngineered Cooling Upgrade:\u003c\/strong\u003e Replaces the failure-prone factory radiator with an all-aluminum 4-row core to maximize thermal rejection and stabilize operating temperatures under severe towing loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Navigator Plastic End Tank Vulnerability\u003c\/h3\u003e\n\u003cp\u003eThe factory cooling unit on the U228 platform relies on a thin core crimped to composite nylon end tanks. Repeated thermal expansion cycles embrittle these polymer tanks over time, leading to micro-fractures around the inlet neck and catastrophic seam blowouts. Furthermore, the OEM core capacity lacks sufficient fluid volume, making the 32-valve modular engine vulnerable to rapid heat soak under heavy payload or high ambient trailer pulling.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis high-efficiency replacement features a fully brazed, 4-row aluminum tube-and-fin core matched with hand TIG-welded aluminum end tanks, permanently eliminating brittle plastic seams and leak-prone rubber gaskets. The expanded core depth increases overall cooling capacity and surface area, optimizing laminar fluid crossflow for superior heat dissipation. Built as a direct-fit component, it drops into factory mounting locations while integrating proper clearance for the engine shroud and cooling fan assembly.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e2003-2004 Lincoln Navigator\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e5.4L DOHC InTech V8 \/ U228\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e300 hp \/ 355 lb-ft (Approx)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2003 Lincoln Navigator Base 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2003 Lincoln Navigator Luxury 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2003 Lincoln Navigator Ultimate 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2004 Lincoln Navigator Base 5.4L V8\u003c\/li\u003e\n  \u003cli\u003e2004 Lincoln Navigator Ultimate 5.4L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Lincoln Durability Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle the rigorous demands of full-size towing and high-payload transport, this all-aluminum unit provides dependable thermal efficiency to protect your modular V8 against head gasket failure and cooling system breakdown.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50497319829752,"sku":"DS-EM7UGEAE4","price":308.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/aluminum-radiator-for-lincoln-navigator-2003-2004-5-4l-1.jpg?v=1789257829","url":"https:\/\/performancechiptuning.com\/es\/products\/aluminum-radiator-for-lincoln-navigator-2003-2004-5-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}