{"product_id":"603-839-engine-coolant-reservoir-w-cap-for-2013-2018-ram-2500-3500-4500-5500","title":"603-839 Engine Coolant Reservoir w\/Cap For 2013-2018 Ram 2500 3500 4500 5500","description":"\u003ch2\u003eEngine Coolant Reservoir with Cap for Ram 2500, 3500, 4500, 5500 (2013-2018)\u003c\/h2\u003e\u003cp\u003eThis engine coolant reservoir with cap replaces the factory tank on 2013-2018 Ram 2500, 3500, 4500, and 5500 trucks, cross-referencing OEM part number 603-839.\u003c\/p\u003e\u003ch4\u003eOverview\u003c\/h4\u003e\u003cp\u003eThis engine coolant reservoir with cap serves as a direct replacement for the coolant expansion tank on 2013-2018 Ram 2500, 3500, 4500, and 5500 diesel trucks. It holds excess coolant as the engine heats up and returns it when cooling, helping maintain proper system pressure and level. Fleet managers and individual owners choose this engine coolant reservoir for its exact fit and durable construction.\u003c\/p\u003e\u003ch4\u003eBuilt For Performance\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eManufactured from high-strength, heat-resistant plastic\u003c\/li\u003e\n\u003cli\u003eIncludes a pressure-rated cap to maintain system integrity\u003c\/li\u003e\n\u003cli\u003eMolded-in fluid level markings for quick visual checks\u003c\/li\u003e\n\u003cli\u003ePrecise OEM-style dimensions ensure straightforward bolt-in installation\u003c\/li\u003e\n\u003cli\u003eReinforced mounting points resist stress cracking\u003c\/li\u003e\n\u003cli\u003eTranslucent tank allows coolant level inspection without opening\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFits These Machines\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003efor Ram 2500 (2013-2018)\u003c\/li\u003e\n\u003cli\u003efor Ram 3500 (2013-2018)\u003c\/li\u003e\n\u003cli\u003efor Ram 4500 (2013-2018)\u003c\/li\u003e\n\u003cli\u003efor Ram 5500 (2013-2018)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eOn-The-Job Use\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eRestoring coolant system function in daily-driven Ram pickups\u003c\/li\u003e\n\u003cli\u003eReplacing cracked or leaking reservoirs on construction fleet trucks\u003c\/li\u003e\n\u003cli\u003eUpgrading aged tanks during cooling system overhauls\u003c\/li\u003e\n\u003cli\u003eMaintaining consistent coolant levels under heavy towing conditions\u003c\/li\u003e\n\u003cli\u003eSimplifying routine level checks at service intervals\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSpecs At A Glance\u003c\/h4\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number(s)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e603-839\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-strength thermoplastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCap Included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatible Models\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRam 2500, 3500, 4500, 5500 (2013-2018)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch4\u003eGood To Know\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Will this coolant reservoir fit both diesel and gas Ram models? \u003cstrong\u003eA:\u003c\/strong\u003e It is specifically designed for the diesel engines in 2013-2018 Ram 2500–5500 trucks; confirm your engine type before ordering.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e How can I tell if my original reservoir is failing? \u003cstrong\u003eA:\u003c\/strong\u003e Common signs include visible cracks near the seams, coolant residue around the tank, or a drop in coolant level without an external leak.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eSlight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.\u003c\/em\u003e\u003c\/p\u003e","brand":"Solid Spare","offers":[{"title":"Default Title","offer_id":44965097078870,"sku":"ZZ3A01017","price":125.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0697\/8460\/0662\/files\/57_3fa04f38-6aeb-40d6-8e31-63a3e2037a60.jpg?v=1781653642","url":"https:\/\/www.solidspare.com\/products\/603-839-engine-coolant-reservoir-w-cap-for-2013-2018-ram-2500-3500-4500-5500","provider":"Solid Spare","version":"1.0","type":"link"}