Audi Coolant Reservoir / Tank / Bottle 8K0121405F

OEM Part #: 8K0-121-405-F (8K0121405F)

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

Ensure optimal engine performance with this OEM Coolant Reservoir, also known as an expansion tank. Genuine part number 8K0121405F, this component is critical for maintaining the coolant level in your Audi. It fits various models, including the 2010-2017 Audi A4, A5, S4, S5, Q5, and SQ5, specifically designed for 3.0L and 3.2L V6 gas engines. Common issues such as coolant leaks or pressure loss can be resolved with this factory-original part, ensuring your vehicle operates smoothly. The coolant reservoir is positioned in the engine bay, playing a vital role in the vehicle’s cooling system. Replace worn or damaged units with this authentic part for enhanced reliability. Compatible alternative part numbers include 8K0121405H and 8K0121405N.

Specifications

Specifications for Coolant Reservoir / Tank / Bottle 8K0121405F
Fits Vehicle ModelA4, A5, Q5, S4, S5, SQ5
Fits Vehicle MakeAudi
OEM Part No8K0-121-405-F (8K0121405F)
Compatible OEM Part No 8K0-121-405-H, 8K0-121-405-N
CategoryRadiator / Coolant

Compatible Vehicles

Fits 36 vehicle configurations across 1 make, 2008-2017.

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 2009 1 with note
  • A5 2008-2010 · 3 variants 3 with notes
  • Q5 2009-2017 · 9 variants
  • S4 2010-2016 · 7 variants 3 with notes
  • S5 2010-2017 · 12 variants 3 with notes
  • SQ5 2014-2017 · 4 variants
View all 36 vehicle configurations — 10 with fitment notes
Full vehicle fitment list for Coolant Reservoir / Tank / Bottle 8K0121405F
Year Make Model Trim Engine Note
2008 Audi A5 Quattro Coupe 3.2L V6 For Vehicles with Production Date After 03/11/08
2009 Audi A4 Quattro Sedan 3.2L V6 For Vehicles with Production Date Between 03/29/08 and 05/02/11
2009 Audi A5 Quattro Coupe 3.2L V6 For Vehicles with Production Date After 03/11/08
2009 Audi Q5 SUV 3.2L V6
2010 Audi A5 Quattro Coupe 3.2L V6 For Vehicles with Production Date After 03/11/08
2010 Audi Q5 SUV 3.2L V6
2010 Audi S4 Sedan 3.0L V6 Supercharged For Vehicles With Production date Up To 05/02/11
2010 Audi S5 Convertible 3.0L V6 Supercharged For Vehicles with Engine Code(s) CAKA, CCBA
2011 Audi Q5 SUV 3.2L V6
2011 Audi S4 Sedan 3.0L V6 Supercharged For Vehicles With Production date Up To 05/02/11
2011 Audi S5 Convertible 3.0L V6 Supercharged For Vehicles with Engine Code(s) CAKA, CCBA
2012 Audi Q5 SUV 3.2L V6
2012 Audi S4 Sedan 3.0L V6 Supercharged For Vehicles With Production date Up To 05/02/11
2012 Audi S5 Convertible 3.0L V6 Supercharged For Vehicles with Engine Code(s) CAKA, CCBA
2013 Audi Q5 SUV 3.0L V6 Supercharged
2013 Audi S4 Sedan 3.0L V6 Supercharged
2013 Audi S5 Coupe 3.0L V6 Supercharged
2013 Audi S5 Convertible 3.0L V6 Supercharged
2014 Audi Q5 SUV 3.0L V6 Supercharged
2014 Audi S4 Sedan 3.0L V6 Supercharged
2014 Audi S5 Convertible 3.0L V6 Supercharged
2014 Audi S5 Coupe 3.0L V6 Supercharged
2014 Audi SQ5 SUV 3.0L V6 Supercharged
2015 Audi Q5 SUV 3.0L V6 Supercharged
2015 Audi S4 Sedan 3.0L V6 Supercharged
2015 Audi S5 Convertible 3.0L V6 Supercharged
2015 Audi S5 Coupe 3.0L V6 Supercharged
2015 Audi SQ5 SUV 3.0L V6 Supercharged
2016 Audi Q5 SUV 3.0L V6 Supercharged
2016 Audi S4 Sedan 3.0L V6 Supercharged
2016 Audi S5 Convertible 3.0L V6 Supercharged
2016 Audi S5 Coupe 3.0L V6 Supercharged
2016 Audi SQ5 SUV 3.0L V6 Supercharged
2017 Audi Q5 SUV 3.0L V6 Supercharged
2017 Audi S5 Convertible 3.0L V6 Supercharged
2017 Audi SQ5 SUV 3.0L V6 Supercharged

Ask a parts specialist

Asking about: Coolant Reservoir / Tank / Bottle 8K0121405F · OEM #8K0121405F