United States
4M0121321K Cap For Expansion Tank
- 4M0121321HNot stocked
Mar 2019 - 4M0121321KThis pageNot stocked
Sep 2020 - 4M0121321QCurrent number
Special order item. Delivery time may vary.
About This Part
Superseded part number
This part number has been replaced. Order the current replacement shown above — the old number can no longer be supplied.
Order Processing & Delivery
This part is not stocked in our warehouse and will be ordered directly from the manufacturer upon purchase. Handling time for VAG is typically 3–8 business days before dispatch.
Handling time for VAG (VW / Audi / Seat / Cupra): 3–8 business days from order confirmation to dispatch (Monday–Friday). Shipping transit for your country is added on top — see handling times by brand and shipping options.
* Delivery times are estimates and may vary based on manufacturer availability and your location.
Verify Vehicle Fitment
To ensure this part is compatible with your vehicle, please contact us with your VIN (Vehicle Identification Number). Our technical team can verify the exact fitment before you place your order.
Contact us with your VINParts diagram & fitment
16 vehiclesCap For Expansion Tank — locate Cap For Expansion Tank in the official exploded view and explore the surrounding assembly.
Parts in this assembly21
- 1Radiator 4K0121251E
- 2Part 4M0121095
- 3Sleeve 7P0121365
- 4Grommet 7P0121276
- 5Rubber Bush 4M0121275A
- 6Rubber Bush 4M0121268A
- 7Bolt 8K0805399B
- 10Container 4K0121405AC
- 10Container 4K0121405N
- 11Part 4M0121321Q
- 13Rubber Bush 4K0121585J
- 13Rubber Bush 4G0121585A
- 14Retainer 4K1121224A
- 14Retainer 4K2121214E
- 14Part 4K2121224A
- 14Retainer 4K1121214E
- 15Bolt N10653201
- 16Part N91189302
- 17Retainer 4K1121305
- 18Part N91189301
- 20Radiator 4K0121002
Vehicle fitment table16
Europe (15)
| Vehicle | Years | Pos. | Qty |
|---|---|---|---|
| Audi RS6 Avant | 2019- | 11 | 1 |
| Audi RS7 Sportback | 2019- | 11 | 1 |
| Audi RS Q8 Quattro | 2019- | 11 | 1 |
| Audi Q8 Quattro 3,0 | 2018- | 11 | 1 |
| audi a6 2.0 | 2018- | 11, 31 | 1 |
| Audi A7 Sportback | 2018- | 11, 31 | 1 |
| Audi RS4 Avant | 2017- | 31 | 1 |
| Audi RS5 Sportback | 2017- | 31 | 1 |
| touareg | 2017-2023 | 14, 34 | 1 |
| Audi A8L | 2017-2022 | 11, 2, 16 | 1 |
| Audi Q5 | 2016-2020 | 11, 18 | 1 |
| Audi A5 Sportback | 2016-2020 | 18, 11 | 1 |
| Audi A5 Cabrio 2.0 | 2016-2018 | 18, 11 | 1 |
| audi a4 2.0 | 2015-2019 | 18, 11 | 1 |
| Audi Q7 qu. 3.0 TDI | 2015-2019 | 11 | 1 |
Other markets (1)
| Vehicle | Years | Pos. | Qty |
|---|---|---|---|
| Audi A6 L 2.0 | 2018- | 11, 16 | 1 |
Diagrams & fitment data powered by oemdiagrams.com
Cap For Expansion Tank is fitted on: Audi RS6 Avant 2019-; Audi RS7 Sportback 2019-; Audi RS Q8 Quattro 2019-; Audi Q8 Quattro 3,0 2018-; audi a6 2.0 2018-; Audi A7 Sportback 2018-; Audi RS4 Avant 2017-; Audi RS5 Sportback 2017-; touareg 2017-2023; Audi A8L 2017-2022; Audi Q5 2016-2020; Audi A5 Sportback 2016-2020; Audi A5 Cabrio 2.0 2016-2018; audi a4 2.0 2015-2019; Audi Q7 qu. 3.0 TDI 2015-2019; Audi A6 L 2.0 2018-.