{"product_id":"aluminum-coolant-overflow-expansion-tank-for-lincoln-ls-2000-2006-3-0l-3-9l","title":"Aluminum Coolant Overflow Expansion Tank for Lincoln LS (2000-2006) 3.0L 3.9L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Aluminum Coolant Expansion Tank for 2000-2006 Lincoln LS (DEW98)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Aluminum Coolant Overflow Expansion Tank replaces the failure-prone factory plastic degas reservoir on the 2000-2006 Lincoln LS to eliminate seam leaks, maintain system pressure, and safeguard against severe overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lincoln LS Degas Bottle Failure\u003c\/h3\u003e\n\u003cp\u003eThe OEM plastic coolant reservoir on the \u003cstrong\u003eDEW98\u003c\/strong\u003e platform degrades prematurely under continuous thermal cycling. Positioned in tight proximity to the engine block on both the \u003cstrong\u003eDuratec 30\u003c\/strong\u003e 3.0L V6 and \u003cstrong\u003eAJ-V8 (AJ30\/AJ35)\u003c\/strong\u003e 3.9L V8, radiant underhood heat causes the factory composite to turn yellow, embrittle, and stress-crack. The most common failures occur along the sonic-welded mold seams, hose barbs, and pressurized filler neck. These hairline fractures bleed off cooling system pressure, lower the boiling point of the coolant, and cause air pockets that lead to localized cylinder head overheating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis reservoir is constructed from heavy-gauge, corrosion-resistant fabricated aluminum designed to handle elevated operating pressures and constant heat soak. Each seam is robotic TIG welded and leak-tested to prevent pressure drop under extreme loads. CNC-machined barbed fittings match OEM hose routing, eliminating the need to modify factory lines. By replacing failure-prone OEM numbers \u003cstrong\u003e5W4Z-8A080-AA\u003c\/strong\u003e and \u003cstrong\u003eXW4Z-8A080-AA\u003c\/strong\u003e with a solid-metal enclosure, it provides a permanent mechanical fix for cooling system depressurization. An integrated billet filler neck and replacement pressure cap ensure a tight seal out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e2000-2006 Lincoln LS\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eDuratec 30, AJ30, AJ35 \/ DEW98\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e210-280 hp \/ 205-286 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e5W4Z-8A080-AA, XW4Z-8A080-AA, 603-207\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2000-2005 Lincoln LS 3.0L V6 (Duratec 30)\u003c\/li\u003e\n  \u003cli\u003e2000-2006 Lincoln LS 3.9L V8 (AJ30 \/ AJ35)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the DEW98 LS?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2000-2006 Lincoln LS equipped with the \u003cstrong\u003eDuratec 30\u003c\/strong\u003e or \u003cstrong\u003eAJ30\/AJ35\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch4\u003eDoes installation require cutting or modifying original coolant hoses?\u003c\/h4\u003e\n\u003cp\u003eNo, this tank features direct OEM-placement barbs and bracket points that mate directly to factory cooling lines and chassis mounts.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lincoln Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to match the high-output demands of Lincoln rear-wheel-drive platforms, this expansion tank provides the structural integrity needed to maintain rock-solid coolant pressure and long-term drivetrain reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67524670226680,"sku":"DS-E4A6OJWMC","price":90.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/aluminum-coolant-overflow-expansion-tank-for-lincoln-ls-2000-2006-3-0l-3-9l-1.webp?v=1790462636","url":"https:\/\/performancechiptuning.com\/products\/aluminum-coolant-overflow-expansion-tank-for-lincoln-ls-2000-2006-3-0l-3-9l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}