{"product_id":"performance-water-pump-kit-for-lexus-is-2006-2014-2-5l-3-5l","title":"Performance Water Pump Kit for Lexus IS (2006-2014) 2.5L 3.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Mechanical Water Pump and Thermostat Kit for 2006-2014 Lexus IS (XE20)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Water Pump Kit replaces the failure-prone factory water pump and thermostat on the 2006-2014 Lexus IS to maintain consistent coolant circulation and eliminate chronic seal leakage.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Lexus IS Water Pump Failure Points\u003c\/h3\u003e\n\u003cp\u003eOn the \u003cstrong\u003eXE20\u003c\/strong\u003e platform powered by the direct-injected \u003cstrong\u003e4GR-FSE\u003c\/strong\u003e and \u003cstrong\u003e2GR-FSE\u003c\/strong\u003e V6 powerplants, factory water pumps are notorious for mechanical shaft seal failure between 60,000 and 100,000 miles. Heat cycling breaks down the factory dynamic seals, leading to coolant weeping, bearing contamination, and belt slip. Additionally, the stock thermostat assembly is prone to spring fatigue and housing distortion, which causes erratic thermal cycling and potential cylinder head warpage under high thermal loads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis comprehensive service kit upgrades the cooling architecture with a precision-cast aluminum mechanical water pump housing paired with an upgraded carbon-ceramic cartridge seal and heavy-duty sealed bearing assembly. The pump is designed to withstand continuous high-RPM loads while eliminating cavitation and shaft runout. Paired with a heavy-duty mechanical thermostat in a reinforced composite housing, this assembly maintains factory operating temperatures (82°C \/ 180°F) and comes complete with precision-molded elastomeric gaskets to ensure leak-free mating surfaces against the timing chain cover.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Mechanical Water Pump Assembly (pulley not included)\u003c\/li\u003e\n  \u003cli\u003e1 Mechanical Engine Coolant Thermostat with Housing\u003c\/li\u003e\n  \u003cli\u003eWater pump and thermostat mounting gaskets\u003c\/li\u003e\n  \u003cli\u003eO-rings and mounting hardware as pictured\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;\"\u003e2006-2014 Lexus IS\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;\"\u003e4GR-FSE (2.5L), 2GR-FSE (3.5L) \/ XE20\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;\"\u003e204–306 hp \/ 185–277 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;\"\u003e1610039435, 1610039436, 1603131020, PA1170, 1430879, 14411589\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\u003e2006-2014 Lexus IS250 2.5L Gas Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2006-2014 Lexus IS350 3.5L 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 XE20 IS?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2006-2014 Lexus IS equipped with the \u003cstrong\u003e4GR-FSE\u003c\/strong\u003e and \u003cstrong\u003e2GR-FSE\u003c\/strong\u003e engines. \u003cstrong\u003eThis kit does NOT fit the 5.0L V8 IS-F or any hybrid variants.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to bleed the cooling system after installing this pump?\u003c\/h4\u003e\n\u003cp\u003eYes, you must vacuum fill or thoroughly bleed the coolant loop to purge air pockets from the cylinder heads and heater core, preventing localized hot spots.\u003c\/p\u003e\n\n\u003ch3\u003eThe Lexus Engineering Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to meet tight Japanese performance tolerances, this replacement cooling kit safeguards your high-compression direct-injected V6 from catastrophic overheating under spirited street and track conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":68038495011064,"sku":"DS-EOI0TA5TQ","price":99.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-kit-for-lexus-is-2006-2014-2-5l-3-5l-1.jpg?v=1794200588","url":"https:\/\/performancechiptuning.com\/products\/performance-water-pump-kit-for-lexus-is-2006-2014-2-5l-3-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}