{"product_id":"performance-water-pump-kit-for-bmw-z4-2003-2005-2-5l-3-0l","title":"Performance Water Pump Kit for BMW Z4 (2003-2005) 2.5L 3.0L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Performance Water Pump \u0026amp; Thermostat Kit for 2003-2005 BMW Z4 (E85)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Water Pump Kit refreshes the primary cooling loop on the 2003-2005 BMW Z4 to maintain proper engine operating temperatures and eliminate catastrophic overheating failures.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock BMW Z4 Cooling System Failure Points\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems on the \u003cstrong\u003eE85\u003c\/strong\u003e chassis are notorious for brittle plastics and thermal fatigue. Over repeated heat cycles, the OEM composite water pump impeller shears off the drive shaft, resulting in sudden coolant cavitation and zero flow. Compounding this, the factory thermostat housing warps and develops micro-cracks around the sensor neck, leading to rapid pressure drops, localized boiling, and warped aluminum cylinder heads on the \u003cstrong\u003eM54\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis kit delivers a comprehensive preventative refresh by pairing a mechanical, belt-driven water pump with a matched thermostat housing assembly. Featuring a durable, high-efficiency impeller engineered to resist rotational shear and cavitation, the pump restores consistent fluid velocity through the block. The reinforced housing features an integrated thermostat calibrated to factory opening thresholds and a pre-installed sensor connector for seamless communication with the factory DME, eliminating cooling-related DTCs and thermal stress.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Mechanical Water Pump Assembly\u003c\/li\u003e\n  \u003cli\u003e1 Thermostat Housing Assembly with Thermostat\u003c\/li\u003e\n\u003c\/ul\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;\"\u003e2003-2005 BMW Z4\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;\"\u003e\n\u003cstrong\u003eM54\u003c\/strong\u003e (2.5L \/ 3.0L) \/ \u003cstrong\u003eE85\u003c\/strong\u003e\n\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;\"\u003e184-225 hp \/ 175-214 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;\"\u003e\n\u003cstrong\u003e1152090\u003c\/strong\u003e, \u003cstrong\u003eAW9261\u003c\/strong\u003e, \u003cstrong\u003e41057\u003c\/strong\u003e, \u003cstrong\u003e1430825\u003c\/strong\u003e, \u003cstrong\u003e11M41017KF\u003c\/strong\u003e\n\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\u003e2003-2005 BMW Z4 2.5L Gas Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2003-2005 BMW Z4 3.0L Gas Naturally Aspirated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the E85 Z4?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2003-2005 BMW Z4 equipped with the \u003cstrong\u003eM54B25\u003c\/strong\u003e (2.5L) and \u003cstrong\u003eM54B30\u003c\/strong\u003e (3.0L) inline-six engines. It does not fit later N52 magnesium-block or S54 M-model applications.\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to bleed the cooling system after installing this kit?\u003c\/h4\u003e\n\u003cp\u003eYes, mechanical water pump replacements require a full coolant drain and a manual cooling system bleed to purge air pockets and prevent hot spots.\u003c\/p\u003e\n\n\u003ch3\u003eThe BMW Precision Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for exacting European tolerances, this cooling refresh kit guarantees proper operating line pressures, precise heat-range control, and factory sensor communication without triggering check engine lights.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67923281346808,"sku":"DS-ENG53U3N4","price":81.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-kit-for-bmw-z4-2003-2005-2-5l-3-0l-1.jpg?v=1793557890","url":"https:\/\/performancechiptuning.com\/es\/products\/performance-water-pump-kit-for-bmw-z4-2003-2005-2-5l-3-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}