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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.

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

Parts diagram & fitment

149 vehicles

End Cap — locate 2Q0121321A Audi Coolant Expansion Tank Cap | 160kPa in the official exploded view and explore the surrounding assembly.

Parts in this assembly(15)
Compatible / alternative parts(8)

Diagrams & fitment data powered by oemdiagrams.com

2Q0121321A Audi Coolant Expansion Tank Cap | 160kPa is fitted on: Atlas Cross Sport 2019-2023; Golf 2.0 BlueMotion 2019-2024; T-Roc convertible 1.5 2019-2024; ID.3 Pro 2019-2024; Polo 1.6 2020-2022; ID.4 Pro 2020-2023; Nivus 2020-; Caddy Maxi Kombi 2020-2024; Multivan 2021-; Taos 1.4 2020-2024; Taos 1.4 2021-2023; Taigun 1.0 2021-; Taigo 2021-2024; Virtus 1,0 2022-; ID.Buzz 2022-; passat estate 2023-; Tiguan 2.0 2023-; ID.7 Limousine Pro 2023-; Amarok twin cab 2022-; Atlas Cross Sport 2023-; Atlas 2023-2024; Polo Track 2023-; Jetta 1.4 2017-2024; touareg 2017-2023; Polo Vivo 2017-; POLO HATCH "ZA"06> 2005-; Crossfox 2014-2021; Gol 1.6 2015-2023; Voyage 2016-2023; saveiro 2016-2017; up! 1.0 TSI 2017-2021; T-Cross 1,0 2019-; T-Cross 1,0 2018-2024; GOLF "ZA." 2005-2007; Passat/4Motion 08 2007-; TIGUAN 08> 2007-; Passat CC 2008-2012; golf 2.0 2008-2011; Scirocco 2.0 2008-2014; passat estate 2008-2011; Touran 1.9 2008-2010; Sharan Blue Motion 2010-2015; Caddy Maxi Kombi 2010-2015; New Passat 2011-2015; Passat saloon 2010-2015; Golf Cabriolet 2011-2016; Tiguan 4Motion 2011-2018; up! BlueMotion 2011-2016; Golf 2011-2013; Passat CC 2011-2016; Golf 1.4 BlueMotion 2012-2017; Polo 2012-2014; Golf Estate 2013-2017; Polo 1.6 2013-2022; e-up! 2013-2016; Polo 1.4 BlueMotion 2014-2017; Golf Sportsvan 1.6 2014-2020; Scirocco 2.0 2014-2017; jetta 2014-2017; Passat saloon 2014-2024; Polo 2014-2022; Spacefox 2014-2019; Beetle 2016-2019; new beetle cabriolet 2016-2019; Tiguan 2.0 4Motion 2016-2022; T-Roc BlueMotion 2017-2024; golf 2.0 2016-2020; Arteon 2017-2023; Atlas 2016-2023; Tiguan 2.0 4Motion 2017-2024; Polo 1.0 BlueMotion 2017-2024; Sharan BlueMotion 2015-2022; caddy kombi 2015-2020; New Passat 2015-2022; Touran 2,0 BlueMotion 2015-2024; Polo 1.6 2015-2020; Ameo 1,0 2016-2020; Tiguan 2.0 4Motion 2016-2024; up! 1.0 BlueMotion 2016-2023; Amarok twin cab 2016-2022; e-up! 2016-2023; Audi RSQ3 Sportback 2019-2024; Audi Q4 Sportback 2021-2022; Audi Q4 Sportback 2022-; Audi A5 Limo 2.0 2024-; Audi A5 Avant 2.0 2024-; Audi Q8 Quattro 3,0 2018-; audi a6 2.0 2018-; Audi A7 Sportback 2018-; Audi Q3 1.4 2016-; Audi Q3 2.0 2019-; Audi A6 L 2.0 2018-; Audi A1 sportback 1.0 2018-; Audi A3 Sportback 2019-2021; Audi Q3 quattro 2018-2019; Audi TT Coupe/Roadster 08> 2007-; Audi A3 Sportback 2008-2013; Audi TTS Coupe 2.0 2010-2014; Audi Q3 quattro 2011-2015; Audi A3 Sportback 2012-2016; Audi RSQ3 qu. 2.5 2013-2018; Audi A3 Cab. 1.4 2013-2016; Audi A1 Sportback 2014-2018; Audi Q2 2.0 TDI 2016-2018; Audi A8L 2017-2022; Audi TTS Coupe 2.0 2014-2023; Audi RS3 Limousine 2017-2020; Audi Q3 2.0 TDI 2014-2019; Audi RS3 Sportback 2015-2016; Audi Q7 qu. 3.0 TDI 2015-2019; Audi A3 Limousine 2.0 2015-2016; Audi A3 Sportback 2016-2020; Audi A3 Cabrio 2016-2020; Audi Q5 2016-2020; Audi TTRS Coupe 2016-2023; Mii electric 2020-2021; Leon style 2019-; Formentor TSI CUPRA 2020-; eBoost CUPRA 2021-; 578 platform; Arona FR 2017-; Tarraco FR 2018-2024; Mii reference 2011-2019; Leon ST Stylance 2012-2016; Leon ST Stylance 2016-2020; Ibiza FR 2017-; Alhambra Stylance 2015-2022; Ibiza Stylance 2015-; Toledo Reference 2015-2019; Ateca Style 2016-; Enyaq 2020-; fabia 2021-; Kushaq 2021-; Slavia 2021-; Superb Combi 2023-; Kodiaq 2024-; Citigo 2019-2021; Kamiq 2019-; Octavia 2019-2024; Rapid Ambition 2011-2021; Citigo 2011-2019; Rapid 2012-2022; Octavia 2012-2017; Yeti 2013-2017; fabia 2014-2022; Kodiaq 2016-2024; Octavia 2017-2020; Karoq 2017-2022; Superb Combi 2015-2024.