{"product_id":"performance-water-pump-kit-for-subaru-legacy-1990-2005-2-2l-2-5l","title":"Performance Water Pump Kit for Subaru Legacy (1990-2005) 2.2L 2.5L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHigh-Flow Water Pump \u0026amp; Thermostat Refresh Kit for 1990-2005 Subaru Legacy (BC\/BD\/BE\/BL)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Water Pump Kit refreshes the primary cooling circuit on the 1990-2005 Subaru Legacy to prevent cavitation, stabilize operating coolant temperatures, and protect EJ-series boxer head gaskets from thermal stress.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Subaru Legacy Thermal Vulnerability\u003c\/h3\u003e\n\u003cp\u003eSubaru horizontally opposed boxer platforms—specifically the \u003cstrong\u003eEJ22\u003c\/strong\u003e, \u003cstrong\u003eEJ25D\u003c\/strong\u003e, and \u003cstrong\u003eEJ251\u003c\/strong\u003e—place extreme demands on continuous coolant circulation. Factory water pumps often suffer from premature bearing degradation, stamped impeller fatigue, and coolant seepage at the weep hole past 80,000 miles. Concurrently, aging mechanical wax-pellet thermostats lose calibration or stick, generating localized steam pockets in the lower cylinder jackets. This uneven thermal expansion across horizontally oriented heads is the leading mechanical catalyst for catastrophic boxer head gasket failures.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis cooling service package replaces worn factory components with a precision-machined, OE-spec die-cast aluminum water pump designed to maintain consistent volumetric flow across both engine banks. Built with heavy-duty unitized shaft bearings and long-life mechanical carbon-ceramic face seals, the assembly resists high-RPM harmonic vibration and coolant wash. Paired with a direct-replacement mechanical wax-pellet thermostat featuring a dedicated jiggle pin for air purging, this kit prevents cavitation, mitigates hot spots, and restores factory thermal efficiency.\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 Water Pump Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Engine Coolant Thermostat\u003c\/li\u003e\n  \u003cli\u003e1 Thermostat Seal\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;\"\u003e1990-2005 Subaru Legacy\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;\"\u003eEJ22, EJ25D, EJ251, EJ253 \/ BC, BD, BE, BL\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;\"\u003e130–175 hp \/ 137–169 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;\"\u003e21111AA000, 21111AA001, 21111AA002, 21111AA003, 21111AA004, 21111AA005, 21111AA006, 21111AA007, 21111AA011, 21111AA110, 21200AA071, 21200AA072, AW9223, WP777, US9223, CP9223, NP1487, PA786, VKPC99407\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\u003e1990-1999 Subaru Legacy 2.2L Gas SOHC Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e1996-1999 Subaru Legacy 2.5L Gas DOHC Naturally Aspirated\u003c\/li\u003e\n  \u003cli\u003e2000-2005 Subaru Legacy 2.5L Gas SOHC 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 BC, BD, BE, or BL Chassis Legacy?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 1990-2005 Subaru Legacy equipped with the \u003cstrong\u003eEJ22\u003c\/strong\u003e and \u003cstrong\u003eEJ25\u003c\/strong\u003e naturally aspirated engines. \u003cstrong\u003eThis kit is strictly for naturally aspirated models and is NOT compatible with turbocharged WRX, STI, or Legacy GT platforms.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to bleed the cooling system after installing this water pump?\u003c\/h4\u003e\n\u003cp\u003eYes, Subaru boxer engines require a vacuum-fill or spill-free funnel bleed procedure during refill to purge air pockets trapped in the lower thermostat housing and horizontal cylinder heads.\u003c\/p\u003e\n\n\u003ch3\u003eThe Subaru Boxer Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to withstand the demanding thermal dynamics of horizontal boxer architecture, this refresh kit delivers the mechanical reliability, sustained flow rates, and seal integrity required to keep your high-mileage EJ engine running at peak efficiency.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67923241402616,"sku":"DS-EFZPJANBD","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-kit-for-subaru-legacy-1990-2005-2-2l-2-5l-1.jpg?v=1793555561","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-water-pump-kit-for-subaru-legacy-1990-2005-2-2l-2-5l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}