2017-2021 Audi A5/RS5/S4/S5 Coolant Reservoir / Tank / Bottle 8W1121405J

OEM Part #: 8W1-121-405-J (8W1121405J)

$59.99
Used
Donor2019 Audi S5 · 3.0L
SKU: 699843 · 30-Day Returns
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Coolant Reservoir / Tank / Bottle 8W1121405J — Used (SKU 699843)
Genuine OEM Used SKU: 699843 Donor Vehicle: 2019 Audi S5 · 3.0L 3 photos
$59.99
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A used genuine Audi coolant reservoir, OEM part number 8W1121405J, also known as a tank or bottle. This part replaces earlier versions 8W1121405F, 8W1121405E, and 8W1121405K. It serves as the expansion tank for the engine's cooling system, holding excess coolant as it heats up and cycles back when cool. A common failure is a cracked seam or leaking cap, which can cause low coolant warnings and overheating. This reservoir fits multiple Audi models with 2.0L TFSI, 2.9L TFSI, or 3.0L TFSI/TSI engines.

Specifications

Specifications for Coolant Reservoir / Tank / Bottle 8W1121405J
Fits Vehicle ModelA5, RS5, S4, S5
Fits Vehicle MakeAudi
OEM Part No8W1-121-405-J (8W1121405J)
Compatible OEM Part No 8W1-121-405-F, 8W1-121-405-E, 8W1-121-405-K
CategoryRadiator / Coolant

Compatible Vehicles

Fits 25 vehicle configurations across 1 make, 2017-2021.

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

  • A5 2019-2021 · 3 variants 3 with notes
  • RS5 2019-2021 · 4 variants 4 with notes
  • S4 2018-2021 · 4 variants 4 with notes
  • S5 2017-2021 · 14 variants 14 with notes
View all 25 vehicle configurations — 25 with fitment notes
Full vehicle fitment list for Coolant Reservoir / Tank / Bottle 8W1121405J
Year Make Model Trim Engine Note
2021 Audi S4 Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2019 Audi S5 Convertible 3.0L V6 Turbo For Vehicles With Production date Up To 05/25/20
2021 Audi S5 Convertible 3.0L V6 Turbo For Vehicles With Production date Up To 05/25/20
2021 Audi RS5 Hatchback 2.9L V6 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2021 Audi S5 Hatchback 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2020 Audi S5 Convertible 3.0L V6 Turbo For Vehicles With Production date Up To 05/25/20
2020 Audi A5 Hatchback 2.0L l4 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2019 Audi S5 Hatchback 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2020 Audi S4 Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2021 Audi A5 Hatchback 2.0L l4 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2021 Audi S5 Coupe 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2020 Audi S5 Coupe 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2019 Audi S5 Coupe 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2020 Audi S5 Hatchback 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2019 Audi S4 Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2019 Audi A5 Hatchback 2.0L l4 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2018 Audi S5 Coupe 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2018 Audi S5 Hatchback 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2018 Audi S5 Convertible 3.0L V6 Turbo For Vehicles With Production date Up To 05/25/20
2018 Audi S4 Sedan 3.0L V6 Turbo For Vehicles With Production date Up To 06/15/20
2019 Audi RS5 Coupe 2.9L V6 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2019 Audi RS5 Hatchback 2.9L V6 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20
2017 Audi S5 Coupe 3.0L V6 Supercharged For Vehicles With Production date Up To 06/15/20
2017 Audi S5 Convertible 3.0L V6 Supercharged For Vehicles With Production date Up To 05/25/20
2021 Audi RS5 Coupe 2.9L V6 Turbo For Vehicles with Production Date Between 01/14/19 and 06/15/20

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