{"product_id":"bmw-thermostat-housing-coolant-water-pump-outlet-replacement-restores-cooling-system-performance-e46-e39-e53-e83-z3-z4-323ci-325i-11531437040-copy","title":"BMW Upgraded Full Metal Thermostat Housing Coolant Water Pump Outlet – Reinforced Cooling System Replacement for E46, E39, E53, E83, Z3 \u0026 Z4 Models | Replaces Part No. 11531437040","description":"\u003cp class=\"p1\"\u003e\u003cstrong\u003eRestore proper coolant circulation and upgrade one of the more failure-prone factory cooling system components with this \u003cspan class=\"s1\"\u003eUpgraded Full Metal Thermostat Housing Coolant Water Pump Outlet\u003c\/span\u003e for select BMW models. Designed to replace the original outlet connection between the water pump, thermostat housing, and surrounding cooling system components, this reinforced version provides a much stronger and more durable solution than the factory-style plastic design.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOn many aging BMW cooling systems, the original plastic outlet can become brittle over time from repeated heat cycles, coolant pressure, and long-term engine bay exposure. Once that happens, it can crack, warp, or begin leaking without much warning, leading to coolant loss, overheating concerns, and potentially expensive engine damage. Replacing that weak point with a \u003cspan class=\"s1\"\u003e\u003cb\u003efull metal design\u003c\/b\u003e\u003c\/span\u003e is a smart preventative maintenance upgrade for long-term reliability.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUnlike the standard plastic-style outlet, this upgraded version is built from metal for significantly improved strength and durability in a critical cooling system junction. The full metal construction is designed to better withstand heat, pressure, and aging, helping reduce the risk of cracking or failure over time. It is an ideal solution for BMW owners who want a more confidence-inspiring replacement rather than installing another plastic part that may eventually suffer the same issue.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eWhether you are repairing a coolant leak, refreshing your cooling system, or proactively upgrading known weak points in the engine bay, this full metal thermostat housing water pump outlet helps restore factory cooling system function while offering improved long-term durability and peace of mind.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eFull Metal Design: Upgraded all-metal construction provides significantly greater strength and durability than the original plastic-style outlet.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eReinforced Cooling System Upgrade: Replaces a common weak point in the factory cooling system with a stronger, more reliable solution.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuilt to Better Resist Cracking: Designed to better withstand repeated heat cycles, coolant pressure, and long-term engine bay stress.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eRestores Proper Coolant Circulation: Helps maintain stable coolant flow between the thermostat housing, water pump, and cooling system.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eHelps Prevent Leaks and Overheating: Replacing a weakened factory outlet can help reduce the risk of coolant loss and temperature-related engine issues.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eOEM-Style Fitment: Designed to install in the factory location for clean fitment and dependable sealing.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIdeal for Repairs and Preventative Maintenance: A smart upgrade when servicing the cooling system or replacing brittle factory plastic components.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eFITMENT:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"p1\"\u003eBMW 3 Series – E46 Sedan, Coupe, Touring, Convertible\u003cbr\u003eCompatible with 323Ci Coupe (1999–2000), 323i Sedan (1999–2000), 325Ci Coupe \/ Convertible (2001–2006), and 325i Sedan \/ Touring (2001–2006).\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBMW 5 Series – E39 Sedan, Touring\u003cbr\u003eCompatible with 525i Sedan \/ Touring (2001–2003) and 530i Sedan \/ Touring (2001–2003).\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBMW X3 – E83 SUV\u003cbr\u003eCompatible with X3 2.5i and X3 3.0i models.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBMW X5 – E53 SUV\u003cbr\u003eCompatible with X5 3.0i models.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBMW Z3 – Roadster, Coupe\u003cbr\u003eCompatible with Z3 2.5i, 2.8i, and 3.0i models.\u003c\/li\u003e\n\u003cli class=\"p1\"\u003eBMW Z4 – E85 Roadster, E86 Coupe\u003cbr\u003eCompatible with Z4 2.5i, 3.0i, and Z4 Coupe 3.0si models.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003eEngine compatibility:\u003cbr\u003eM52TU inline-6 engines\u003cbr\u003eM54 inline-6 engines\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eIf you’re unsure whether this upgraded full metal outlet fits your specific vehicle, please contact us with your VIN and we’ll be happy to verify compatibility before you order.\u003c\/p\u003e\n\u003cp class=\"p2\"\u003e\u003cb\u003eReplaces Part No.\u003c\/b\u003e\u003cspan class=\"s2\"\u003e 11531437040\u003c\/span\u003e\u003c\/p\u003e","brand":"BAVMODS®","offers":[{"title":"Default Title","offer_id":47618715615422,"sku":null,"price":107.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0619\/8788\/1150\/files\/S52b32f5c564f4e198486cf354035dac5O_jpg_960x960q75_jpg.avif?v=1781071905","url":"https:\/\/bavmods.com\/products\/bmw-thermostat-housing-coolant-water-pump-outlet-replacement-restores-cooling-system-performance-e46-e39-e53-e83-z3-z4-323ci-325i-11531437040-copy","provider":"BAVMODS®","version":"1.0","type":"link"}