United States
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Number 14 marks the part’s position in the exploded view.
Product overview
Genuine OEM Volkswagen Expansion Tank Cap, part number 4M0121321Q. Seals the coolant expansion tank to maintain system pressure. It is located on the coolant expansion tank. Made from high-quality materials to withstand heat and pressure. Genuine OEM parts are manufactured to exact specifications for a perfect fit and reliable performance, ensuring the longevity of your cooling system.
Catalogue entry: cap for expansion tank black; 1,6BAR.
Technical details
- Category
- Engine Cooling
- Country of origin
- Germany
- Customs (HS) code
- 87089997
- Manufacturer
- Volkswagen
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 9.5 × 9.5 × 5.5 cm
- Shipping weight
- 0.08 kg
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
- Specification
- 1.6 bar
Why buy from WW Spares?
- ✓ Genuine OEM inventory sourced directly from factory networks
- ✓ Fitment support from workshop-seasoned parts specialists
- ✓ Global logistics with customs-ready documentation
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Parts diagram & fitment
18 vehiclesCap For Expansion Tank — locate 4M0121321Q Volkswagen Expansion Tank Cap | Genuine OEM in the official exploded view and explore the surrounding assembly.
Parts in this assembly32
- 1Hose 4K1265344J
- 1Hose 4K1265344R
- 1Radiator 4K0121251E
- 2Grommet 4K0819345AM
- 2Grommet 4K0819345BD
- 2Grommet 4K0819345T
- 2Part 4M0121095
- 3Water Pipe 4K0819377AC
- 3Sleeve 7P0121365
- 4Grommet 7P0121276
- 4Bolt N10748001
- 5Rubber Bush 4M0121275A
- 5Collar Nut N01508210
- 6Rubber Bush 4M0121268A
- 6Collar Nut N10609201
- 7Bolt 8K0805399B
- 10Container 4K0121405AC
- 10Container 4K0121405N
- 11Part 4M0121321K
- 13Rubber Bush 4K0121585J
- 13Rubber Bush 4G0121585A
- 14RetainerLeft4K1121224A
- 14RetainerRight4K2121214E
- 14PartRight4K2121224A
- 14RetainerLeft4K1121214E
- 15Bolt N10653201
- 16Part N91189302
- 17RetainerLeft4K1121305
- 18Part N91189301
- 20Radiator 4K0121002
- 40Clamp N90686901
- 41Clamp N90687001
Vehicle fitment table18
Europe (15)
| Vehicle | Years | Pos. | Qty | PR |
|---|---|---|---|---|
| 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 | 11, 18 | 1 | 4BI |
| Audi A5 Cabrio 2.0 | 2016-2018 | 11, 18 | 1 | 4BI |
| audi a4 2.0 | 2015-2019 | 11, 18 | 1 | 4BI |
| Audi Q7 qu. 3.0 TDI | 2015-2019 | 11 | 1 |
Other markets (3)
| Vehicle | Years | Pos. | Qty | PR |
|---|---|---|---|---|
| Audi A7 | 2021- | 11 | 1 | |
| Audi Q5 qu. 2.0 | 2018- | 11 | 1 | |
| Audi A4L 2.0 | 2016- | 11 | 1 |
Diagrams & fitment data powered by oemdiagrams.com
4M0121321Q Volkswagen Expansion Tank Cap | Genuine OEM 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 A7 2021-; Audi Q5 qu. 2.0 2018-; Audi A4L 2.0 2016-.
