{"product_id":"yzusgomumu-coolant-reservoir-tank-for-bmw-mini-direct-fit-with-pressure-cap-corrosion-resistant","title":"YzusGomumu Coolant Reservoir Tank for BMW \u0026 Mini — Direct-Fit with Pressure Cap, Corrosion-Resistant","description":"\u003cstrong\u003eYzusGomumu Engine Radiator Coolant Reservoir Tank is a direct-fit replacement expansion tank and cap assembly engineered for select BMW and Mini models to store and manage engine coolant safely.\u003c\/strong\u003e\n\n\u003cp\u003eThis replacement coolant overflow reservoir from YzusGomumu restores the cooling system’s ability to capture excess antifreeze as the engine warms and cools. Designed to match OEM mounting points and plumbing, the tank comes with a new pressure cap and is molded from corrosion-resistant material for a longer service life under typical under-hood conditions. Before purchasing, confirm compatibility using the listed part numbers and vehicle years.\u003c\/p\u003e\n\n\u003ch3\u003eWill this reservoir fit my BMW or Mini?\u003c\/h3\u003e\n\u003cp\u003eCompatibility depends on vehicle year and engine variant; this tank fits a range of BMW and Mini models when paired with matching part numbers. Check your vehicle’s service manual or the existing tank’s OE stamp to verify fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models include: 2018–2019 BMW 118i; 2018 BMW 318i; 2014–2019 BMW i3 and 2018–2019 i3s; 2014–2019 BMW i8.\u003c\/li\u003e\n  \u003cli\u003eAlso fits multiple Mini models: 2007–2015 Mini Cooper, 2011–2016 Mini Cooper Countryman, 2013–2016 Mini Cooper Paceman.\u003c\/li\u003e\n  \u003cli\u003eReference OE numbers: 17137539267, 603-332, 603332 to confirm exact match.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow does the YzusGomumu tank help the cooling system perform?\u003c\/h3\u003e\n\u003cp\u003eThe reservoir captures expanding coolant and returns it to the system as temperatures drop, helping maintain proper fluid levels and reduce air intrusion. Using a correctly sized and sealed tank prevents spills and preserves system pressure for reliable cooling performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStores overflow coolant during thermal expansion and returns it via return hose when the engine cools.\u003c\/li\u003e\n  \u003cli\u003eMaintains head pressure with the included cap to support boiling-point control and system balance.\u003c\/li\u003e\n  \u003cli\u003eSealed connections reduce the risk of leaks and air pockets that can impair heat transfer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat are the materials and durability features of this replacement?\u003c\/h3\u003e\n\u003cp\u003eYzusGomumu uses reinforced, corrosion-resistant polymer designed for repeated thermal cycles and the vibration typical of engine bays. The robust construction resists cracking, swelling, and chemical degradation that can cause early failure in lower-quality tanks.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eMade from high-quality, heat-tolerant plastic to endure under-hood temperatures.\u003c\/li\u003e\n  \u003cli\u003eRugged design minimizes warping or stress-related fractures over time.\u003c\/li\u003e\n  \u003cli\u003eComes with a matching cap to ensure proper sealing and pressure management.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and what comes in the package?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward for anyone comfortable with basic automotive maintenance; the reservoir uses the vehicle’s original mounting points and hoses. The package provides everything needed to replace the tank assembly and get the cooling system back in working order.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePackage includes one radiator coolant overflow reservoir tank and one cap.\u003c\/li\u003e\n  \u003cli\u003eDesigned as a direct-fit item—no custom modifications required on compatible models.\u003c\/li\u003e\n  \u003cli\u003eSimple bolt-on swap: remove old tank, transfer or replace hoses, then install the new unit and cap.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This YzusGomumu replacement reservoir is intended for owners and mechanics servicing compatible BMW and Mini vehicles who need a reliable, OEM-style coolant expansion tank. It suits those replacing a cracked, leaking, or discolored tank, or anyone restoring proper cooling performance after overheating or system repairs. Always verify your vehicle’s model year and part number against the provided OE references before ordering to ensure a correct fit.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Does this reservoir include the pressure cap?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. The package contains one radiator coolant overflow reservoir tank plus one matching cap.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Which OE numbers confirm compatibility?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Check OE numbers 17137539267, 603-332, or 603332 against your existing part to confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"YzusGomumu","offers":[{"title":"Default Title","offer_id":48085344288926,"sku":"B0DKHY6HFD","price":40.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/yzusgomumu-front-view-tank_aa38477d-f6de-44d1-8e83-5e55a983d70d.jpg?v=1785869665","url":"https:\/\/northtrailauto.ca\/products\/yzusgomumu-coolant-reservoir-tank-for-bmw-mini-direct-fit-with-pressure-cap-corrosion-resistant","provider":"North Trail Auto","version":"1.0","type":"link"}