CTS Turbo expansion tank cap for VW MQB/MQL vehicles.
The cap is made from 6061-T6 aluminium using CNC technology and black anodised for an elegant appearance and resistance to corrosion. It is a direct replacement for the original cap, so no modifications are required.
Note: the original centre clip must be transferred before installation.
OEM part number: 3C0121321/200121321
Suitable for: Audi A3 II (8P), Audi A4 II (B6/B7), Audi A5 I (B8), Audi A6 VII (4G/C7), Audi A7 I (4G), Audi Q3 I (8U), Audi RS3 III (8V), Audi RS4 II (B6/B7), Audi RS6 IV (C7), Audi RS7 I (C7), Audi S4 IV (B6/B7) / V (B8), Audi S5 I (8T) and 7 more (see the table below).
Compatible vehicles (manufacturer data)
| Vehicle | Chassis | Years | Engine |
|---|---|---|---|
| Audi A3 | — | 2005–2013 | — |
| Audi A4 | — | 2002–2008 | — |
| Audi A5 | — | 2008–2016 | — |
| Audi A6 | — | 2012–2018 | — |
| Audi A7 | — | 2012–2018 | — |
| Audi ALLROAD | — | 2009–2016 | — |
| Audi Q3 | — | 2011–2017 | — |
| Audi RS3 | — | 2018–2021 | — |
| Audi RS4 | — | 2007–2008 | — |
| Audi RS6 | — | 2013–2018 | — |
| Audi RS7 | — | 2013–2018 | — |
| Audi S4 | — | 2002–2016 | — |
| Audi S5 | — | 2008 | — |
| Audi S6 | — | 2012–2018 | — |
| Audi S7 | — | 2013–2018 | — |
| Audi TT | — | 2000–2005 | — |
| Volkswagen ATLAS | — | 2018–2022 | — |
| Volkswagen CC | — | 2009–2017 | — |
| Volkswagen EOS | — | 2007–2016 | — |
| Volkswagen GOLF | — | 1999–2014 | — |
| Volkswagen Golf R | — | 2012–2013 | — |
| Volkswagen GTI | — | 2002–2003 | — |
Before ordering, check that the product matches your vehicle (model, year and engine). If in doubt, write to us — we will check for you.

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