{"product_id":"coolant-expansion-tank-vent-hose-for-audi-a4-a5-2-0t-tfsi-coolant-reservoir-overflow-pipe-replaces-8k0121081bf","title":"Coolant Expansion Tank Vent Hose for Audi A4 A5 2.0T TFSI | Coolant Reservoir Overflow Pipe | Replaces 8K0121081BF","description":"\u003ch2 data-section-id=\"10h6lp6\" data-start=\"1196\" data-end=\"1241\"\u003eCoolant Leak from the Expansion Tank Hose?\u003c\/h2\u003e\n\u003cp data-start=\"1243\" data-end=\"1314\"\u003eReplace One of the Most Common Audi 2.0T Cooling System Failure Points.\u003c\/p\u003e\n\u003cp data-start=\"1316\" data-end=\"1512\"\u003eThe factory coolant expansion tank vent hose is responsible for routing coolant between the radiator and coolant reservoir while maintaining proper cooling system pressure and coolant circulation.\u003c\/p\u003e\n\u003cp data-start=\"1514\" data-end=\"1537\"\u003eOver time, exposure to:\u003c\/p\u003e\n\u003cul data-start=\"1538\" data-end=\"1625\"\u003e\n\u003cli data-section-id=\"1atljfk\" data-start=\"1538\" data-end=\"1560\"\u003econstant engine heat\u003c\/li\u003e\n\u003cli data-section-id=\"1ksw0ni\" data-start=\"1561\" data-end=\"1578\"\u003epressure cycles\u003c\/li\u003e\n\u003cli data-section-id=\"qd3jqj\" data-start=\"1579\" data-end=\"1598\"\u003ecoolant chemicals\u003c\/li\u003e\n\u003cli data-section-id=\"qs1lse\" data-start=\"1599\" data-end=\"1625\"\u003eaging plastic connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1627\" data-end=\"1667\"\u003ecan cause the original hose assembly to:\u003c\/p\u003e\n\u003cul data-start=\"1668\" data-end=\"1754\"\u003e\n\u003cli data-section-id=\"vfr9q3\" data-start=\"1668\" data-end=\"1684\"\u003ebecome brittle\u003c\/li\u003e\n\u003cli data-section-id=\"1cugjns\" data-start=\"1685\" data-end=\"1701\"\u003ecrack suddenly\u003c\/li\u003e\n\u003cli data-section-id=\"1xmph1b\" data-start=\"1702\" data-end=\"1716\"\u003eleak coolant\u003c\/li\u003e\n\u003cli data-section-id=\"bogofl\" data-start=\"1717\" data-end=\"1754\"\u003ebreak at the quick-connect fittings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1756\" data-end=\"1789\"\u003eA failing coolant hose may cause:\u003c\/p\u003e\n\u003cp data-start=\"1791\" data-end=\"1992\"\u003e✔ Coolant leaks\u003cbr data-start=\"1806\" data-end=\"1809\"\u003e✔ Coolant spraying in engine bay\u003cbr data-start=\"1841\" data-end=\"1844\"\u003e✔ Low coolant warning light\u003cbr data-start=\"1871\" data-end=\"1874\"\u003e✔ Engine overheating\u003cbr data-start=\"1894\" data-end=\"1897\"\u003e✔ Sweet coolant smell\u003cbr data-start=\"1918\" data-end=\"1921\"\u003e✔ Steam from engine compartment\u003cbr data-start=\"1952\" data-end=\"1955\"\u003e✔ Sudden coolant loss while driving\u003c\/p\u003e\n\u003cp data-start=\"1994\" data-end=\"2111\"\u003eThis OEM-style coolant reservoir vent hose is designed to restore proper coolant flow and cooling system reliability.\u003c\/p\u003e\n\u003cp data-start=\"2113\" data-end=\"2264\"\u003eManufactured from durable heat-resistant automotive-grade materials, it provides reliable direct-fit installation for selected Audi 2.0T TFSI vehicles.\u003c\/p\u003e\n\u003chr data-start=\"2266\" data-end=\"2269\"\u003e\n\u003ch1 data-section-id=\"1oef6j8\" data-start=\"2271\" data-end=\"2296\"\u003eKey Features \u0026amp; Benefits\u003c\/h1\u003e\n\u003cp data-start=\"2298\" data-end=\"2618\"\u003e✔ OEM-style aftermarket replacement\u003cbr data-start=\"2333\" data-end=\"2336\"\u003e✔ Restores proper coolant circulation\u003cbr data-start=\"2373\" data-end=\"2376\"\u003e✔ Helps prevent coolant leaks and overheating\u003cbr data-start=\"2421\" data-end=\"2424\"\u003e✔ Durable heat-resistant hose construction\u003cbr data-start=\"2466\" data-end=\"2469\"\u003e✔ Reinforced quick-connect fittings\u003cbr data-start=\"2504\" data-end=\"2507\"\u003e✔ Designed for high-temperature turbocharged engines\u003cbr data-start=\"2559\" data-end=\"2562\"\u003e✔ Direct-fit installation\u003cbr data-start=\"2587\" data-end=\"2590\"\u003e✔ No modification required\u003c\/p\u003e\n\u003chr data-start=\"2620\" data-end=\"2623\"\u003e\n\u003ch1 data-section-id=\"nh62sj\" data-start=\"2625\" data-end=\"2649\"\u003eProduct Specifications\u003c\/h1\u003e\n\u003cp data-start=\"2651\" data-end=\"2734\"\u003e\u003cstrong data-start=\"2651\" data-end=\"2665\"\u003ePart Type:\u003c\/strong\u003e\u003cbr data-start=\"2665\" data-end=\"2668\"\u003eCoolant Expansion Tank Vent Hose \/ Coolant Reservoir Overflow Hose\u003c\/p\u003e\n\u003cp data-start=\"2736\" data-end=\"2810\"\u003e\u003cstrong data-start=\"2736\" data-end=\"2749\"\u003eMaterial:\u003c\/strong\u003e\u003cbr data-start=\"2749\" data-end=\"2752\"\u003eHeat-Resistant EPDM Rubber \u0026amp; Reinforced Automotive Plastic\u003c\/p\u003e\n\u003cp data-start=\"2812\" data-end=\"2844\"\u003e\u003cstrong data-start=\"2812\" data-end=\"2842\"\u003eReference OE Part Numbers:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"2845\" data-end=\"2860\"\u003e\n\u003cli data-section-id=\"1ys93k4\" data-start=\"2845\" data-end=\"2860\"\u003e8K0121081BF\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2862\" data-end=\"2865\"\u003e\n\u003ch1 data-section-id=\"ksm387\" data-start=\"2867\" data-end=\"2900\"\u003eCompatible With Selected Models\u003c\/h1\u003e\n\u003ch3 data-section-id=\"ynh55r\" data-start=\"2902\" data-end=\"2910\"\u003eAudi\u003c\/h3\u003e\n\u003cul data-start=\"2912\" data-end=\"2970\"\u003e\n\u003cli data-section-id=\"1pm45jr\" data-start=\"2912\" data-end=\"2929\"\u003eA4 B8 2.0T TFSI\u003c\/li\u003e\n\u003cli data-section-id=\"fncgks\" data-start=\"2930\" data-end=\"2944\"\u003eA5 2.0T TFSI\u003c\/li\u003e\n\u003cli data-section-id=\"levtxg\" data-start=\"2945\" data-end=\"2957\"\u003eA4 allroad\u003c\/li\u003e\n\u003cli data-section-id=\"b97bj8\" data-start=\"2958\" data-end=\"2970\"\u003eA5 Quattro\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2972\" data-end=\"3032\"\u003eCompatible with selected Audi 1.8T \/ 2.0T TFSI applications.\u003c\/p\u003e\n\u003cp data-start=\"3034\" data-end=\"3079\"\u003ePlease verify OE part number before purchase.\u003c\/p\u003e\n\u003cp data-start=\"3081\" data-end=\"3247\"\u003eAudi OEM parts catalogs identify 8K0121081BF as the engine coolant overflow \/ vent hose used on multiple A4 and A5 applications. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"3249\" data-end=\"3367\"\u003eFCP Euro confirms this hose connects the radiator to the coolant expansion tank.\u003c\/p\u003e","brand":"vwpartly","offers":[{"title":"Default Title","offer_id":52259773579547,"sku":null,"price":9.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1019\/5972\/9435\/files\/8K0121081BF_A4A51.png?v=1779800675","url":"https:\/\/vwpartly.com\/products\/coolant-expansion-tank-vent-hose-for-audi-a4-a5-2-0t-tfsi-coolant-reservoir-overflow-pipe-replaces-8k0121081bf","provider":"VW Partly Auto Parts","version":"1.0","type":"link"}