{"title":"International 9900i Engine \u0026 Colling Truck Parts","description":"","products":[{"product_id":"international-5900-9900i-prostar-coolant-reservoir-tank-w-cap-2003-2020-replaces-603-5105","title":"International 5900\/9900i\/ProStar Coolant Reservoir Tank w\/ Cap (2003–2020) – Replaces 603-5105","description":"\u003cp\u003eKeep your International truck running at the right temperature with the \u003cstrong\u003eROADWEST Engine Coolant Reservoir Tank with Cap\u003c\/strong\u003e. Designed as a direct replacement for multiple OEM numbers, this heavy-duty expansion tank helps maintain proper coolant levels and protect your engine from overheating during long-haul and heavy-load operation.\u003c\/p\u003e\n\u003cp\u003eEngineered for \u003cstrong\u003eInternational 5900, 9900i and ProStar trucks\u003c\/strong\u003e, this reservoir tank offers a precise fit and durable construction to withstand constant heat, vibration and pressure changes in the engine bay. It comes complete with a cap, making it an ideal solution when your original tank is cracked, leaking, or discolored.\u003c\/p\u003e\n\u003cp\u003eThe reservoir is thoroughly tested to deliver consistent performance under harsh conditions, providing a reliable place for excess coolant to expand and return as temperatures change. Whether you’re replacing a failed unit or performing preventative maintenance, this tank helps restore your truck’s cooling system efficiency.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle-specific fit\u003c\/strong\u003e – Compatible with International 5900 (2003–2009), International 9900i (2003–2018) and International ProStar (2007–2020); designed for a direct replacement fit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM cross-reference\u003c\/strong\u003e – Replaces OEM part numbers \u003cstrong\u003e603-5105, 2591620C91, 3599401F91, 3599401F92, 3599401F93, 3599401F94, 3599401F95\u003c\/strong\u003e for easy identification.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable plastic construction\u003c\/strong\u003e – Manufactured from high-quality plastic to better withstand heat, pressure and engine vibration over long service life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRestores cooling performance\u003c\/strong\u003e – Provides a proper expansion space for coolant, helping to stabilize system pressure, reduce leaks and protect the engine from overheating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete with cap\u003c\/strong\u003e – Includes reservoir cap so you can replace the entire assembly at once and avoid issues from worn or damaged caps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdeal for heavy-duty use\u003c\/strong\u003e – Built for demanding commercial applications where trucks operate under load for long hours and require reliable cooling components.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy replacement\u003c\/strong\u003e – Designed to match the OEM shape and mounting points for a straightforward installation by professional technicians or experienced owners.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePackage Includes:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Engine Coolant Reservoir Tank\u003c\/li\u003e\n\u003cli\u003e1 × Reservoir Cap\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eROADWEST\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eEngine Coolant Reservoir \/ Expansion Tank\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatible Vehicles\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eInternational 5900 (2003–2009), International 9900i (2003–2018), International ProStar (2007–2020)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOEM Part Numbers\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003e603-5105, 2591620C91, 3599401F91, 3599401F92, 3599401F93, 3599401F94, 3599401F95\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003ePlastic\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eExterior Finish\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eBare\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003e5.8 Liters (approx.)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eIncluded Components\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eCoolant Reservoir Tank + Cap\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eStores expanding coolant, stabilizes cooling system pressure and helps prevent engine overheating\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eVehicle Service Type\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eHeavy-duty semi-trucks – International 5900, 9900i, ProStar\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFit Type\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eDirect replacement, vehicle-specific\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Use\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eReplacement for cracked, leaking or discolored OEM coolant reservoirs\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003e\u003cstrong\u003eProfessional installation recommended for best performance and safety\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"ROADWEST","offers":[{"title":"Default Title","offer_id":41854906564711,"sku":"B09WK6RHDV","price":73.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/7612\/3239\/files\/international-59009900iprostar-coolant-reservoir-tank-w-cap-2003-2020-replaces-603-5105-roadwest-truck-parts-b09wk6rhdv-high-soar-2334213.jpg?v=1768890977"}],"url":"https:\/\/roadwesttruckparts.com\/collections\/international-9900i-engine-colling-truck-parts.oembed","provider":"RoadWest Truck Parts","version":"1.0","type":"link"}