{"product_id":"engine-coolant-reservoir-104","title":"Engine Coolant Reservoir","description":"The Mahle engine coolant reservoir, part number 8W1121405N, is a vital component for your Audi's engine cooling system. A properly functioning coolant reservoir is essential for maintaining optimal engine temperature and preventing significant damage.\n\nThis genuine Audi part, also known by supersession numbers 8W1-121-405-N and 8W1121405K, is specifically designed for models such as the RS5, RS5 Sportback, RS7 Sportback, S4, S5, and S5 Sportback. It is compatible with engines featuring 2.9 LITER and 3.0 LITER displacements. The product description notes its function as an Engine Coolant Overflow and Expansion Tank.\n\nA failed expansion tank can lead to serious issues, including significant coolant loss or severe engine overheating. If you suspect your Audi is losing coolant or is prone to overheating, it is crucial to have the expansion tank inspected and potentially replaced to avoid further engine damage. This part serves as a direct replacement, ensuring compatibility and performance aligned with original equipment specifications.","brand":"Audi","offers":[{"title":"Default Title","offer_id":52662883811640,"sku":"8W1121405N","price":192.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/687501774.jpg?v=1784321747","url":"https:\/\/store.motormia.co\/products\/engine-coolant-reservoir-104","provider":"MOTORMIA","version":"1.0","type":"link"}