1998-2001 Audi A6 Heater Core Return Hose / Line 4B0819373K

OEM Part #: 4B0-819-373-K (4B0819373K)

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Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:

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This OEM heater core return hose (Part Numbers: 4B0819373H, 4B0819373E, 4B0819373K) is a critical component for maintaining efficient coolant flow in your Audi A6 or A6 Quattro (1998-2001). Located on the engine compartment, this authentic factory-original part helps in circulating coolant back to the heater core, preventing overheating and ensuring optimal cabin heating performance. Common issues such as leaks, wear, or damage can lead to insufficient heating and engine problems. Replace your worn-out hose with this direct fit OEM part to restore comfort and reliability. Compatible with various engine styles, this replacement is an essential part of your vehicle's heating system.

Specifications

Specifications for Heater Core Return Hose / Line 4B0819373K
Fits Vehicle ModelA6
Fits Vehicle MakeAudi
OEM Part No4B0-819-373-K (4B0819373K)
Compatible OEM Part No 4B0-819-373-H, 4B0-819-373-E
CategoryHVAC / Climate Control

Compatible Vehicles

Fits 11 vehicle configurations across 1 make, 1998-2001.

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

  • A6 1998-2001 · 11 variants
View all 11 vehicle configurations
Full vehicle fitment list for Heater Core Return Hose / Line 4B0819373K
Year Make Model Trim Engine Note
1998 Audi A6 Sedan 2.8L V6
1998 Audi A6 Quattro Sedan 2.8L V6
1999 Audi A6 Sedan 2.8L V6
1999 Audi A6 Quattro Wagon 2.8L V6
1999 Audi A6 Quattro Sedan 2.8L V6
2000 Audi A6 Sedan 2.8L V6
2000 Audi A6 Quattro Wagon 2.8L V6
2000 Audi A6 Quattro Sedan 2.8L V6
2001 Audi A6 Sedan 2.8L V6
2001 Audi A6 Quattro Wagon 2.8L V6
2001 Audi A6 Quattro Sedan 2.8L V6

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