{"product_id":"expansion-tank-105","title":"Expansion Tank","description":"The BMW expansion tank, part number 17111723520, is a genuine OEM component designed to maintain the proper function of your vehicle's cooling system. This reservoir captures excess coolant as it expands due to engine heat, then returns it as the system cools, helping to prevent overheating.\n\nHowever, like many plastic components exposed to heat cycles and chemical exposure over time, it can degrade, leading to potential cracks, leaks, or fogging that obscures the coolant level. Symptoms of a failing expansion tank include visible coolant leaks, engine overheating, or foggy coolant that makes level checks difficult.\n\nThis genuine BMW expansion tank is specifically designed for a range of models, including the 320i, 323i, 325i, 328i, 528i, M3, and Z3 from model years 1992 through 2000, with specific engine displacements. It is recommended to replace the expansion tank when installing a new radiator to ensure the longevity and performance of the entire cooling system. Please note that this part does not include the coolant level sensor or cap.","brand":"BMW","offers":[{"title":"Default Title","offer_id":52687172043064,"sku":"17111723520","price":37.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/660680439.jpg?v=1784881056","url":"https:\/\/store.motormia.co\/products\/expansion-tank-105","provider":"MOTORMIA","version":"1.0","type":"link"}