2001-2005 Audi Allroad Heater Core Coolant Supply Hose / Line 4Z7819371B

OEM Part #: 4Z7-819-371-B (4Z7819371B)

This page covers one exact OEM part number. Every unit we stocked has sold.

This OEM Heater Core Coolant Supply Hose, part number 4Z7819371B, is an essential component for optimal heating performance in your Audi Allroad Quattro. Designed with precision to fit models from 2001 to 2005 featuring the 2.7L V6 gas engine, this Genuine Audi part connects directly to the heater core, enabling efficient coolant flow. Over time, hoses can wear out or become damaged, resulting in heating issues, coolant leaks, or engine overheating. Replacing a worn supply hose with this authentic OEM piece ensures reliable operation and maintains system integrity. Also known as the HVAC Heater Hose, it is a vital part for maintaining your vehicle's climate control efficiency. Alternative part numbers include 4Z7121107 and 8D0121428.

Specifications

Specifications for Heater Core Coolant Supply Hose / Line 4Z7819371B
Fits Vehicle ModelAllroad
Fits Vehicle MakeAudi
OEM Part No4Z7-819-371-B (4Z7819371B)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 5 vehicle configurations across 1 make, 2001-2005.

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

View all 5 vehicle configurations
Full vehicle fitment list for Heater Core Coolant Supply Hose / Line 4Z7819371B
Year Make Model Trim Engine Note
2001 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2002 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2003 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2004 Audi Allroad Quattro Wagon 2.7L V6 Turbo
2005 Audi Allroad Quattro Wagon 2.7L V6 Turbo

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