United States
Product overview
Genuine OEM Audi Coolant Expansion Tank Cap, part number 2Q0121321A. This cap is a critical component that seals the coolant expansion tank, maintaining the correct pressure within the engine cooling system. It is designed to release pressure if it exceeds 160kPa (23 PSI), preventing damage to cooling components. Made from durable, heat-resistant plastic, it ensures a tight seal and reliable pressure regulation. Using genuine OEM caps guarantees the correct pressure rating and material integrity, preventing coolant loss and engine overheating.
Catalogue entry: COVER black.
Fitted with: 1H0121687A SEAL. RING.
Technical details
- Category
- Engine Cooling
- Country of origin
- Germany
- Customs (HS) code
- 87089997
- Manufacturer
- Audi
- Product Type
- Genuine new auto parts
- Shipping size (L × W × H)
- 8.7 × 8.7 × 2.7 cm
- Shipping weight
- 0.06 kg
Specifications
As recorded in the manufacturer’s parts catalogue for this part number.
- Specification
- 1.6 bar
- Specification
- 1.6 bar
- Specification
- 1.4 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
Need help confirming compatibility? Talk to a specialist
Parts diagram & fitment
150 vehiclesEnd Cap — locate 2Q0121321A Audi Coolant Expansion Tank Cap | 160kPa in the official exploded view and explore the surrounding assembly.
Parts in this assembly13
Vehicle fitment table150
Europe (112)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Audi A5 Limo 2.0 | 2024- | 11 | 1 | ||
| Audi A5 Avant 2.0 | 2024- | 11 | 1 | ||
| Kodiaq | 2024- | 21 | 1 | ||
| passat estate | 2023- | 21, 12 | 1 | ||
| Tiguan 2.0 | 2023- | 21 | 1 | ||
| ID.7 Limousine Pro | 2023- | 12 | 1 | ||
| Superb Combi | 2023- | 21 | 1 | ||
| ID.Buzz | 2022- | 12 | 1 | ||
| Amarok twin cab | 2022- | 17 | 1 | ||
| Multivan | 2021- | 12 | 1 | ||
| eBoost CUPRA | 2021- | 13 | 1 | ||
| fabia | 2021- | 21 | 1 | ||
| Taigo | 2021-2024 | 12 | 1 | ||
| Audi Q4 Sportback | 2021-2022 | 11 | 1 | ||
| Formentor TSI CUPRA | 2020- | 7 | 1 | ||
| Enyaq | 2020- | 13 | 1 | ||
| Caddy Maxi Kombi | 2020-2024 | 12 | 1 | ||
| ID.4 Pro | 2020-2023 | 12 | 1 | ||
| Mii electric | 2020-2021 | 10 | 1 | ||
| Leon style | 2019- | 21 | 1 | ||
| Kamiq | 2019- | 9 | 1 | ||
| Golf 2.0 BlueMotion | 2019-2024 | 7, 21 | 1 | ||
| T-Roc convertible 1.5 | 2019-2024 | 21 | 1 | ||
| ID.3 Pro | 2019-2024 | 12 | 1 | ||
| Audi RSQ3 Sportback | 2019-2024 | 21 | 1 | ||
| Octavia | 2019-2024 | 19 | 1 | ||
| Audi A3 Sportback | 2019-2021 | 21 | 1 | ||
| Citigo | 2019-2021 | 10 | 1 | ||
| Audi Q8 Quattro 3,0 | 2018- | 2 | 1 | ||
| audi a6 2.0 | 2018- | 31 | 1 | ||
| Audi A7 Sportback | 2018- | 31 | 1 | ||
| Audi A1 sportback 1.0 | 2018- | 21 | 1 | ||
| T-Cross 1,0 | 2018-2024 | 21 | 1 | ||
| Tarraco FR | 2018-2024 | 21 | 1 | ||
| Audi Q3 quattro | 2018-2019 | 21 | 1 | ||
| Arona FR | 2017- | 11 | 1 | ||
| Ibiza FR | 2017- | 11 | 1 | ||
| T-Roc BlueMotion | 2017-2024 | 21 | 1 | ||
| Tiguan 2.0 4Motion | 2017-2024 | 21 | 1 | ||
| Polo 1.0 BlueMotion | 2017-2024 | 11 | 1 | ||
| touareg | 2017-2023 | 26, 2 | 1 | ||
| Arteon | 2017-2023 | 21 | 1 | ||
| Audi A8L | 2017-2022 | 26 | 1 | ||
| Karoq | 2017-2022 | 21 | 1 | ||
| Audi RS3 Limousine | 2017-2020 | 21 | 1 | ||
| Octavia | 2017-2020 | 21 | 1 | ||
| Audi Q3 1.4 | 2016- | 21 | 1 | ||
| Ateca Style | 2016- | 21 | 1 | N09 | |
| Tiguan 2.0 4Motion | 2016-2024 | 21 | 1 | ||
| Kodiaq | 2016-2024 | 21 | 1 | ||
| up! 1.0 BlueMotion | 2016-2023 | 3 | 1 | ||
| e-up! | 2016-2023 | 10 | 1 | ||
| Audi TTRS Coupe | 2016-2023 | 21 | 1 | ||
| Amarok twin cab | 2016-2022 | 17 | 1 | ||
| golf 2.0 | 2016-2020 | 21 | 1 | ||
| Audi A3 Sportback | 2016-2020 | 21 | 1 | ||
| Audi A3 Cabrio | 2016-2020 | 21 | 1 | ||
| Audi Q5 | 2016-2020 | 31 | 1 | ||
| Leon ST Stylance | 2016-2020 | 21 | 1 | ||
| Beetle | 2016-2019 | 21 | 1 | ||
| new beetle cabriolet | 2016-2019 | 21 | 1 | ||
| Audi Q2 2.0 TDI | 2016-2018 | 21 | 1 | ||
| Ibiza Stylance | 2015- | 21 | 1 | ||
| Touran 2,0 BlueMotion | 2015-2024 | 21 | 1 | ||
| Superb Combi | 2015-2024 | 21 | 1 | ||
| Sharan BlueMotion | 2015-2022 | 21 | 1 | ||
| Alhambra Stylance | 2015-2022 | 21 | 1 | ||
| caddy kombi | 2015-2020 | 12 | 1 | ||
| Audi Q7 qu. 3.0 TDI | 2015-2019 | 2 | 1 | ||
| Toledo Reference | 2015-2019 | 2 | 1 | ||
| Audi RS3 Sportback | 2015-2016 | 21 | 1 | ||
| Passat saloon | 2014-2024 | 21 | 1 | ||
| Audi TTS Coupe 2.0 | 2014-2023 | 21 | 1 | ||
| fabia | 2014-2022 | 14 | 1 | ||
| Golf Sportsvan 1.6 | 2014-2020 | 21 | 1 | ||
| Audi Q3 2.0 TDI | 2014-2019 | 21 | 1 | ||
| Audi A1 Sportback | 2014-2018 | 21 | 1 | ||
| Polo 1.4 BlueMotion | 2014-2017 | 21 | 1 | ||
| Scirocco 2.0 | 2014-2017 | 21 | 1 | ||
| jetta | 2014-2017 | 14 | 1 | ||
| Audi RSQ3 qu. 2.5 | 2013-2018 | 21 | 1 | ||
| Golf Estate | 2013-2017 | 21 | 1 | ||
| Yeti | 2013-2017 | 10 | 1 | ||
| e-up! | 2013-2016 | 10 | 1 | ||
| Audi A3 Cab. 1.4 | 2013-2016 | 21 | 1 | ||
| Rapid | 2012-2022 | 2 | 1 | ||
| Golf 1.4 BlueMotion | 2012-2017 | 21 | 1 | ||
| Octavia | 2012-2017 | 21 | 1 | ||
| Audi A3 Sportback | 2012-2016 | 21 | 1 | ||
| Leon ST Stylance | 2012-2016 | 21 | 1 | ||
| Polo | 2012-2014 | 21 | 1 | ||
| Mii reference | 2011-2019 | 3 | 1 | ||
| Citigo | 2011-2019 | 3 | 1 | ||
| Tiguan 4Motion | 2011-2018 | 21 | 1 | ||
| Golf Cabriolet | 2011-2016 | 21 | 1 | ||
| up! BlueMotion | 2011-2016 | 3 | 1 | ||
| Passat CC | 2011-2016 | 21 | 1 | ||
| Audi Q3 quattro | 2011-2015 | 21 | 1 | ||
| Golf | 2011-2013 | 21 | 1 | CFGB | TL4 |
| Sharan Blue Motion | 2010-2015 | 21 | 1 | ||
| Caddy Maxi Kombi | 2010-2015 | 21 | 1 | ||
| Passat saloon | 2010-2015 | 21 | 1 | BLV,BWS | TV0 |
| Audi TTS Coupe 2.0 | 2010-2014 | 21 | 1 | TL4 | |
| Scirocco 2.0 | 2008-2014 | 21 | 1 | CBBB | TG3 |
| Audi A3 Sportback | 2008-2013 | 21 | 1 | CBBB,CFGB | TG3 |
| Passat CC | 2008-2012 | 21 | 1 | TH0 | |
| golf 2.0 | 2008-2011 | 21 | 1 | CBBB | TG3 |
| passat estate | 2008-2011 | 21 | 1 | BMR | D0M |
| Touran 1.9 | 2008-2010 | 21 | 1 | BMN | TN0 |
| Passat/4Motion 08 | 2007- | 21 | 1 | BLV,BWS | |
| TIGUAN 08> | 2007- | 21 | 1 | TU0 | |
| Audi TT Coupe/Roadster 08> | 2007- | 21 | 1 | TG3 |
Other markets (37)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| Atlas Cross Sport | 2023- | 21 | 1 | ||
| Polo Track | 2023- | 3 | |||
| Atlas | 2023-2024 | 21 | 1 | ||
| Virtus 1,0 | 2022- | 12 | 1 | ||
| Audi Q4 Sportback | 2022- | 11 | 1 | ||
| Taigun 1.0 | 2021- | 12 | 1 | ||
| Kushaq | 2021- | 13 | 1 | ||
| Slavia | 2021- | 13 | 1 | ||
| Taos 1.4 | 2021-2023 | 21, 9 | 1 | ||
| Nivus | 2020- | 21 | |||
| Golf 1.5 | 2020- | 12 | 1 | ||
| Taos 1.4 | 2020-2024 | 21 | 1 | ||
| Polo 1.6 | 2020-2022 | 12 | 1 | ||
| T-Cross 1,0 | 2019- | 21, 3 | |||
| Audi Q3 2.0 | 2019- | 21 | 1 | ||
| Atlas Cross Sport | 2019-2023 | 21 | 1 | ||
| Audi A6 L 2.0 | 2018- | 31 | 1 | ||
| Polo Vivo | 2017- | 17, 21 | 1 | ||
| Jetta 1.4 | 2017-2024 | 15, 21 | 1 | ||
| up! 1.0 TSI | 2017-2021 | 3 | 1 | ||
| Voyage | 2016-2023 | 14 | 1 | ||
| Atlas | 2016-2023 | 21 | 1 | ||
| Tiguan 2.0 4Motion | 2016-2022 | 21 | 1 | ||
| Ameo 1,0 | 2016-2020 | 14 | 1 | ||
| saveiro | 2016-2017 | 14, 3 | 1 | ||
| Gol 1.6 | 2015-2023 | 14 | 1 | ||
| New Passat | 2015-2022 | 21 | 1 | ||
| Polo 1.6 | 2015-2020 | 2 | 1 | ||
| Audi A3 Limousine 2.0 | 2015-2016 | 21 | 1 | ||
| Polo | 2014-2022 | 14 | 1 | ||
| Crossfox | 2014-2021 | 14 | 1 | 9AB | |
| Spacefox | 2014-2019 | 21 | 1 | ||
| Polo 1.6 | 2013-2022 | 21 | 1 | ||
| Rapid Ambition | 2011-2021 | 12 | 1 | ||
| New Passat | 2011-2015 | 21 | 1 | ||
| POLO HATCH "ZA"06> | 2005- | 21, 10 | 1 | ||
| GOLF "ZA." | 2005-2007 | 3, 21 |
Platform / generic diagrams (1)
| Vehicle | Years | Pos. | Qty | Remark | PR |
|---|---|---|---|---|---|
| 578 platform | 21 | 1 | T3J |
Diagrams & fitment data powered by oemdiagrams.com
2Q0121321A Audi Coolant Expansion Tank Cap | 160kPa is fitted on: Audi A5 Limo 2.0 2024-; Audi A5 Avant 2.0 2024-; Kodiaq 2024-; passat estate 2023-; Tiguan 2.0 2023-; ID.7 Limousine Pro 2023-; Superb Combi 2023-; ID.Buzz 2022-; Amarok twin cab 2022-; Multivan 2021-; eBoost CUPRA 2021-; fabia 2021-; Taigo 2021-2024; Audi Q4 Sportback 2021-2022; Formentor TSI CUPRA 2020-; Enyaq 2020-; Caddy Maxi Kombi 2020-2024; ID.4 Pro 2020-2023; Mii electric 2020-2021; Leon style 2019-; Kamiq 2019-; Golf 2.0 BlueMotion 2019-2024; T-Roc convertible 1.5 2019-2024; ID.3 Pro 2019-2024; Audi RSQ3 Sportback 2019-2024; Octavia 2019-2024; Audi A3 Sportback 2019-2021; Citigo 2019-2021; Audi Q8 Quattro 3,0 2018-; audi a6 2.0 2018-; Audi A7 Sportback 2018-; Audi A1 sportback 1.0 2018-; T-Cross 1,0 2018-2024; Tarraco FR 2018-2024; Audi Q3 quattro 2018-2019; Arona FR 2017-; Ibiza FR 2017-; T-Roc BlueMotion 2017-2024; Tiguan 2.0 4Motion 2017-2024; Polo 1.0 BlueMotion 2017-2024; touareg 2017-2023; Arteon 2017-2023; Audi A8L 2017-2022; Karoq 2017-2022; Audi RS3 Limousine 2017-2020; Octavia 2017-2020; Audi Q3 1.4 2016-; Ateca Style 2016-; Tiguan 2.0 4Motion 2016-2024; Kodiaq 2016-2024; up! 1.0 BlueMotion 2016-2023; e-up! 2016-2023; Audi TTRS Coupe 2016-2023; Amarok twin cab 2016-2022; golf 2.0 2016-2020; Audi A3 Sportback 2016-2020; Audi A3 Cabrio 2016-2020; Audi Q5 2016-2020; Leon ST Stylance 2016-2020; Beetle 2016-2019; new beetle cabriolet 2016-2019; Audi Q2 2.0 TDI 2016-2018; Ibiza Stylance 2015-; Touran 2,0 BlueMotion 2015-2024; Superb Combi 2015-2024; Sharan BlueMotion 2015-2022; Alhambra Stylance 2015-2022; caddy kombi 2015-2020; Audi Q7 qu. 3.0 TDI 2015-2019; Toledo Reference 2015-2019; Audi RS3 Sportback 2015-2016; Passat saloon 2014-2024; Audi TTS Coupe 2.0 2014-2023; fabia 2014-2022; Golf Sportsvan 1.6 2014-2020; Audi Q3 2.0 TDI 2014-2019; Audi A1 Sportback 2014-2018; Polo 1.4 BlueMotion 2014-2017; Scirocco 2.0 2014-2017; jetta 2014-2017; Audi RSQ3 qu. 2.5 2013-2018; Golf Estate 2013-2017; Yeti 2013-2017; e-up! 2013-2016; Audi A3 Cab. 1.4 2013-2016; Rapid 2012-2022; Golf 1.4 BlueMotion 2012-2017; Octavia 2012-2017; Audi A3 Sportback 2012-2016; Leon ST Stylance 2012-2016; Polo 2012-2014; Mii reference 2011-2019; Citigo 2011-2019; Tiguan 4Motion 2011-2018; Golf Cabriolet 2011-2016; up! BlueMotion 2011-2016; Passat CC 2011-2016; Audi Q3 quattro 2011-2015; Golf 2011-2013; Sharan Blue Motion 2010-2015; Caddy Maxi Kombi 2010-2015; Passat saloon 2010-2015; Audi TTS Coupe 2.0 2010-2014; Scirocco 2.0 2008-2014; Audi A3 Sportback 2008-2013; Passat CC 2008-2012; golf 2.0 2008-2011; passat estate 2008-2011; Touran 1.9 2008-2010; Passat/4Motion 08 2007-; TIGUAN 08> 2007-; Audi TT Coupe/Roadster 08> 2007-; Atlas Cross Sport 2023-; Polo Track 2023-; Atlas 2023-2024; Virtus 1,0 2022-; Audi Q4 Sportback 2022-; Taigun 1.0 2021-; Kushaq 2021-; Slavia 2021-; Taos 1.4 2021-2023; Nivus 2020-; Golf 1.5 2020-; Taos 1.4 2020-2024; Polo 1.6 2020-2022; T-Cross 1,0 2019-; Audi Q3 2.0 2019-; Atlas Cross Sport 2019-2023; Audi A6 L 2.0 2018-; Polo Vivo 2017-; Jetta 1.4 2017-2024; up! 1.0 TSI 2017-2021; Voyage 2016-2023; Atlas 2016-2023; Tiguan 2.0 4Motion 2016-2022; Ameo 1,0 2016-2020; saveiro 2016-2017; Gol 1.6 2015-2023; New Passat 2015-2022; Polo 1.6 2015-2020; Audi A3 Limousine 2.0 2015-2016; Polo 2014-2022; Crossfox 2014-2021; Spacefox 2014-2019; Polo 1.6 2013-2022; Rapid Ambition 2011-2021; New Passat 2011-2015; POLO HATCH "ZA"06> 2005-; GOLF "ZA." 2005-2007; 578 platform.
