Audi A4/A5/allroad Coolant Reservoir Hose / Line Rear 8K0121081AN

OEM Part #: 8K0-121-081-AN (8K0121081AN)

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This Audi OEM coolant reservoir hose (Part Number 8K0121081BT) is engineered for reliable performance in models like the A4, A4 allroad, and A5 from 2013. Located at the rear of the vehicle, it connects the coolant reservoir to the engine, ensuring efficient fluid circulation. Over time, these hoses can become worn or damaged, leading to leaks or poor cooling system performance. This replacement hose, also known as the overflow hose, is a genuine factory-original part sourced from salvage vehicles, guaranteeing authenticity and quality. Compatible with vehicles featuring a 2.0L L4 engine, it can help resolve issues related to coolant loss and overheating, ensuring optimal operation. Other part numbers include 8K0121081AN, making it an excellent option for replacement.

Specifications

Specifications for Coolant Reservoir Hose / Line 8K0121081AN
Fits Vehicle ModelA4, A5, allroad
Fits Vehicle MakeAudi
OEM Part No8K0-121-081-AN (8K0121081AN)
Compatible OEM Part No 8K0-121-081-BT
SideRear
CategoryRadiator / Coolant

Compatible Vehicles

Fits 6 vehicle configurations across 1 make, 2013.

Check your specific vehicle before ordering. This list shows year, make, and model. Some years have multiple trims or engines that use different parts, and individual listings may have additional fitment notes (e.g. “with sunroof only”). Review the full variant list below, or message us with your VIN and we’ll confirm the match.

Audi

  • A4 2013 · 2 variants 2 with notes
  • A5 2013 · 3 variants 3 with notes
  • allroad 2013 1 with note
View all 6 vehicle configurations — 6 with fitment notes
Full vehicle fitment list for Coolant Reservoir Hose / Line 8K0121081AN
Year Make Model Trim Engine Note
2013 Audi A4 Sedan 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12
2013 Audi A4 Quattro Sedan 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12
2013 Audi A5 Convertible 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12
2013 Audi A5 Quattro Coupe 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12
2013 Audi A5 Quattro Convertible 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12
2013 Audi allroad Wagon 2.0L l4 Turbo For Vehicles With Production date Up To 04/09/12

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