{"product_id":"4n0121405b-4n0121405p-4n0121405af-4n0121403h-coolant-radiator-expansion-tank-for-audi-a8-d5-4n-quattro-2017","title":"Expansion Tank for Radiator Coolant Level Sensor Replacement for Audi A8L D5 Quattro","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eAudi A8L D5 Expansion Tank for Radiator Coolant with Level Sensor\u003c\/strong\u003e — 100% new replacement part designed to restore reliable coolant management on the Audi A8L D5 quattro. This expansion tank replaces the original reservoir and includes a built-in coolant level sensor for easy monitoring, helping prevent overheating and ensuring the cooling system operates at optimal pressure. It is molded from durable plastic and rubber and adheres to OEM standards for a true, direct replacement. Note the tank ships without a cap but includes the level sensor for seamless integration with your vehicle’s monitoring system. This part comes with OEM references 4N0121405B, 4N0121405P, 4N0121405AF, and 4N0121403H and is backed by a generous warranty for peace of mind. \u003c\/p\u003e\n\u003cp\u003eAll electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.\u003c\/p\u003e\n\u003ch3\u003eBenefits \u0026amp; Tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDirect replacement that fits the Audi A8L D5 4N quattro platforms without modification, restoring proper coolant storage and flow.\u003c\/li\u003e\n\u003cli\u003eCoolant level sensor provides real-time visibility into the reservoir level, helping you spot leaks or low coolant before they cause engine issues.\u003c\/li\u003e\n\u003cli\u003eChoose this expansion tank to maintain OEM-style performance and reduce the risk of overheating during extreme driving conditions or hot weather.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eProduct specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MAX NOLOGY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem\u003c\/strong\u003e: Expansion Tank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM No.\u003c\/strong\u003e: 4N0121405B, 4N0121405P, 4N0121405AF, 4N0121403H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Mainland China\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCondition\u003c\/strong\u003e: 100% New\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e: For AUDI A8L D5 4N quattro\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Plastic and rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: With coolant level sensor; Without cap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect replacement\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 3 years or 50,000 kilometers (under normal use)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage\u003c\/strong\u003e: 1 piece Tank\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel compatibility\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003eA8L D5 50 TFSI Mild Hybrid quattro (4N8) — 07.2018–\u003c\/li\u003e\n\u003cli\u003eA8L D5 55 TFSI Mild Hybrid quattro (4N8) — 06.2017–\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackage includes:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Radiator Coolant Expansion Tank with Level Sensor (no cap)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarnings \/ Reminders\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAlways verify compatibility using the OEM numbers listed above and your vehicle VIN. For accurate fitment, you may be asked to provide the VIN (17-character code found on the windshield, registration, or door frame).\u003c\/li\u003e\n\u003cli\u003eWarranty is 3 years or 50,000 kilometers under normal use. If issues arise, a replacement or refund is available per our policy.\u003c\/li\u003e\n\u003cli\u003eIf the item is damaged on arrival, contact us for exchange or refund and provide photos showing the damage and shipping details.\u003c\/li\u003e\n\u003cli\u003eTo avoid delays, confirm that this is the correct part before purchasing, and contact us with any product questions before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProviding quality and trusted service since 2002 at intercyprus.com\u003c\/p\u003e\n\u003c\/div\u003e","brand":"InterCyprus Trading Ltd","offers":[{"title":"Default Title","offer_id":52754133320022,"sku":"1005010217788207-Default Title","price":115.1,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0530\/0604\/1274\/files\/S290d701b19fe47f79681562d39bac6e33.webp?v=1772730911","url":"https:\/\/www.intercyprus.com\/de\/products\/4n0121405b-4n0121405p-4n0121405af-4n0121403h-coolant-radiator-expansion-tank-for-audi-a8-d5-4n-quattro-2017","provider":"InterCyprus Trading Ltd","version":"1.0","type":"link"}