2002-2009 Audi Coolant / Water Reservoir / Overflow / Expansion Tank 8E0121403

OEM Part #: 8E0-121-403 (8E0121403)

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The OEM Coolant / Water Reservoir (Part Number 8E0121403) is an authentic replacement component for various Audi models, including the A4, A4 Quattro, and A6, spanning model years 2002 to 2009. Positioned in the engine bay on the driver's side, this expansion tank is crucial for maintaining optimal engine temperatures by securely holding the coolant/antifreeze mixture. It features an integrated level sensor for monitoring coolant levels, ensuring precision in engine cooling management. Common issues with this reservoir include wear, damage, or failure that can lead to overheating. This genuine part not only guarantees compatibility but also contributes to the overall reliability of your Audi's cooling system.

Level sensor is integrated in this tank.

Specifications

Specifications for Coolant / Water Reservoir / Overflow / Expansion Tank 8E0121403
Fits Vehicle ModelA4
Fits Vehicle MakeAudi
OEM Part No8E0-121-403 (8E0121403)
CategoryRadiator / Coolant

Compatible Vehicles

Fits 48 vehicle configurations across 1 make, 2002-2009.

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 2002-2009 · 48 variants
View all 48 vehicle configurations
Full vehicle fitment list for Coolant / Water Reservoir / Overflow / Expansion Tank 8E0121403
Year Make Model Trim Engine Note
2002 Audi A4 Sedan 1.8L l4 Turbo
2002 Audi A4 Quattro Wagon 1.8L l4 Turbo
2002 Audi A4 Quattro Sedan 1.8L l4 Turbo
2003 Audi A4 Sedan 1.8L l4 Turbo
2003 Audi A4 Convertible 1.8L l4 Turbo
2003 Audi A4 Quattro Wagon 1.8L l4 Turbo
2003 Audi A4 Quattro Sedan 1.8L l4 Turbo
2004 Audi A4 Sedan 1.8L l4 Turbo
2004 Audi A4 Convertible 1.8L l4 Turbo
2004 Audi A4 Quattro Wagon 1.8L l4 Turbo
2004 Audi A4 Quattro Sedan 1.8L l4 Turbo
2005 Audi A4 Sedan 1.8L l4 Turbo
2005 Audi A4 Sedan 2.0L l4 Turbo
2005 Audi A4 Convertible 1.8L l4 Turbo
2005 Audi A4 Quattro Wagon 1.8L l4 Turbo
2005 Audi A4 Quattro Wagon 2.0L l4 Turbo
2005 Audi A4 Quattro Wagon 3.2L V6
2005 Audi A4 Quattro Sedan 1.8L l4 Turbo
2005 Audi A4 Quattro Sedan 2.0L l4 Turbo
2005 Audi A4 Quattro Sedan 3.2L V6
2006 Audi A4 Sedan 2.0L l4 Turbo
2006 Audi A4 Sedan 3.2L V6
2006 Audi A4 Convertible 1.8L l4 Turbo
2006 Audi A4 Quattro Wagon 2.0L l4 Turbo
2006 Audi A4 Quattro Wagon 3.2L V6
2006 Audi A4 Quattro Sedan 2.0L l4 Turbo
2006 Audi A4 Quattro Sedan 3.2L V6
2007 Audi A4 Sedan 2.0L l4 Turbo
2007 Audi A4 Sedan 3.2L V6
2007 Audi A4 Convertible 2.0L l4 Turbo
2007 Audi A4 Quattro Wagon 2.0L l4 Turbo
2007 Audi A4 Quattro Wagon 3.2L V6
2007 Audi A4 Quattro Sedan 2.0L l4 Turbo
2007 Audi A4 Quattro Sedan 3.2L V6
2007 Audi A4 Quattro Convertible 2.0L l4 Turbo
2007 Audi A4 Quattro Convertible 3.2L V6
2008 Audi A4 Sedan 2.0L l4 Turbo
2008 Audi A4 Sedan 3.2L V6
2008 Audi A4 Convertible 2.0L l4 Turbo
2008 Audi A4 Quattro Wagon 2.0L l4 Turbo
2008 Audi A4 Quattro Wagon 3.2L V6
2008 Audi A4 Quattro Sedan 2.0L l4 Turbo
2008 Audi A4 Quattro Sedan 3.2L V6
2008 Audi A4 Quattro Convertible 2.0L l4 Turbo
2008 Audi A4 Quattro Convertible 3.2L V6
2009 Audi A4 Convertible 2.0L l4 Turbo
2009 Audi A4 Quattro Convertible 2.0L l4 Turbo
2009 Audi A4 Quattro Convertible 3.2L V6

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