Shop By Vehicle
You're viewing parts for , but your selected vehicle is a .
Genuine Volkswagen/Audi
Expansion Tank Cap
PART#: 3B0121321
$32.71
$37.18
SAVE $4.47
Ships in 1 Business Day from our Facility "Ships in" reflects an estimated lead time before this item will leave via the shipping method selected. Please Note: Selecting an expedited shipping method during the checkout process will not change the "Ships in" time frame.
Cap for coolant bottle (reservoir)
Accessory Caps that can be used to replace this cap
R8 Cooling System Cap 420-121-321
Porsche Cooling System Cap 991-106-457-01
Accessory Caps that can be used to replace this cap
R8 Cooling System Cap 420-121-321
Porsche Cooling System Cap 991-106-457-01
Cap for Coolant Overflow Tank
Spec Highlights
Alternative Numbers
40722, CPE0024P
ABOUT THE BRAND
Shop All Genuine Volkswagen/Audi Parts
Genuine Volkswagen/Audi
Vehicle Compatibility
86 applications
No compatible vehicles match your search.
| Make | Model | Generation | Years | Engine | Transmission | Drivetrain |
|---|---|---|---|---|---|---|
| Audi | A3 | 8P (2006-2008) | 2006–2008 | 2.0T FSI | DSG (6 Speed) | FWD |
| Audi | A3 | 8P (2006-2008) | 2006–2008 | 2.0T FSI | Manual (6 Speed) | FWD |
| Audi | A3 | 8P (2006-2008) | 2006–2008 | 2.0T TSI | DSG (6 Speed) | FWD |
| Audi | A3 | 8P (2006-2008) | 2006–2008 | 2.0T TSI | Manual (6 Speed) | FWD |
| Audi | A3 | 8P (2009-2013) | 2009–2013 | 2.0T TSI | DSG (6 Speed) | AWD |
| Audi | A3 | 8P (2009-2013) | 2009–2013 | 2.0T TSI | DSG (6 Speed) | FWD |
| Audi | A3 | 8P (2009-2013) | 2009–2013 | 2.0T TSI | Manual (6 Speed) | FWD |
| Audi | A3 | 8V (2014-2021) | 2014–2021 | 2.0T GEN3 | DSG (6 Speed) | AWD |
| Audi | A3 | 8V (2014-2021) | 2014–2021 | 2.0T GEN3 | DSG (7 Speed) | FWD |
| Audi | A4 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Auto (6 Speed) | AWD |
| Audi | A4 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Auto (CVT) | FWD |
| Audi | A4 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Manual | AWD |
| Audi | A4 | B8.5 (2013-2016) | 2013–2016 | 2.0T TSI (CAEB Engine Code) | Manual | AWD |
| Audi | A4 | B8.5 (2013-2016) | 2013–2016 | 2.0T TSI (CAED Engine Code) | Auto (CVT) | FWD |
| Audi | A4 | B8.5 (2013-2016) | 2013–2016 | 2.0T TSI (CAED Engine Code) | Manual (6 Speed) | AWD |
| Audi | A4 | B8.5 (2013-2016) | 2013–2016 | 2.0T TSI (CPMA/B Engine Code) Flex Fuel | Auto (8 Speed) | AWD |
| Audi | A5 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Auto (8 Speed) | AWD |
| Audi | A5 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Auto (CVT) | FWD |
| Audi | A5 | B8 (2008-2012) | 2008–2012 | 2.0T TSI (CAEB Engine Code) | Manual | AWD |
| Audi | TT | MK2 (2007-2013) | 2007–2013 | 2.0T FSI | DSG (6 Speed) | FWD |
| Audi | TT | MK2 (2007-2013) | 2007–2013 | 2.0T TSI | DSG (6 Speed) | AWD |
| Volkswagen | Eos | 2006-2015 | 2006–2015 | 2.0T FSI | DSG (6 Speed) | FWD |
| Volkswagen | Eos | 2006-2015 | 2006–2015 | 2.0T FSI | Manual (6 Speed) | FWD |
| Volkswagen | Eos | 2006-2015 | 2006–2015 | 2.0T TSI | DSG (6 Speed) | FWD |
| Volkswagen | Golf R / R32 | MK6 (2012-2013) | 2012–2013 | 2.0T FSI | Manual (6 Speed) | AWD |
| Volkswagen | Golf R / R32 | MK7 (2015-2017) | 2015–2017 | 2.0T GEN3 | DSG (6 Speed) | AWD |
| Volkswagen | Golf R / R32 | MK7 (2015-2017) | 2015–2017 | 2.0T GEN3 | Manual (6 Speed) | AWD |
| Volkswagen | Golf R / R32 | MK7.5 (2018-2021) | 2018–2021 | 2.0T GEN3 | DSG (7 Speed) | AWD |
| Volkswagen | Golf R / R32 | MK7.5 (2018-2021) | 2018–2021 | 2.0T GEN3 | Manual (6 Speed) | AWD |
| Volkswagen | GTI | MK5 (2006-2009) | 2006–2009 | 2.0T FSI | DSG (6 Speed) | FWD |
| Volkswagen | GTI | MK5 (2006-2009) | 2006–2009 | 2.0T FSI | Manual (6 Speed) | FWD |
| Volkswagen | GTI | MK6 (2010-2014) | 2010–2014 | 2.0T TSI | Manual (6 Speed) | FWD |
| Volkswagen | GTI | MK7 (2015-2017) | 2015–2017 | 2.0T GEN3 | DSG (6 Speed) | FWD |
| Volkswagen | GTI | MK7 (2015-2017) | 2015–2017 | 2.0T GEN3 | Manual (6 Speed) | FWD |
| Volkswagen | GTI | MK7.5 (2018-2021) | 2018–2021 | 2.0T GEN3 | DSG (6 Speed) | FWD |
| Volkswagen | GTI | MK7.5 (2018-2021) | 2018–2021 | 2.0T GEN3 | DSG (7 Speed) | FWD |
| Volkswagen | GTI | MK7.5 (2018-2021) | 2018–2021 | 2.0T GEN3 | Manual (6 Speed) | FWD |
| Volkswagen | Jetta | MK5 (2006-2009) | 2006–2009 | 2.0T FSI | DSG (6 Speed) | FWD |
| Volkswagen | Jetta | MK5 (2006-2009) | 2006–2009 | 2.0T FSI | Manual (6 Speed) | FWD |
| Volkswagen | Passat | B6 (2006-2010) | 2006–2010 | 2.0T FSI | Automatic | FWD |
| Volkswagen | Passat | B6 (2006-2010) | 2006–2010 | 2.0T FSI | Manual (6 Speed) | FWD |
| Volkswagen | Passat | B6 (2006-2010) | 2006–2010 | 2.0T TSI | DSG (6 Speed) | FWD |
| Volkswagen | Passat | B6 (2006-2010) | 2006–2010 | 2.0T TSI | Manual (6 Speed) | FWD |
| Volkswagen | Sportwagen / Alltrack | MK6 (2010-2014) | 2010–2014 | 2.0T TSI | DSG (6 Speed) | FWD |
| Volkswagen | Sportwagen / Alltrack | MK6 (2010-2014) | 2010–2014 | 2.0T TSI | Manual (6 Speed) | FWD |
| Volkswagen | Tiguan | Gen 1 (2009-2011) | 2009–2011 | 2.0T TSI | Auto (6 Speed) | AWD |
| Volkswagen | Tiguan | Gen 1 (2009-2011) | 2009–2011 | 2.0T TSI | Auto (6 Speed) | FWD |
| Volkswagen | Tiguan | Gen 1 (2009-2011) | 2009–2011 | 2.0T TSI | Manual (6 Speed) | FWD |
| Volkswagen | Tiguan | Gen 2 (2012-2017) | 2012–2017 | 2.0T TSI | Auto (6 Speed) | AWD |
| Volkswagen | Tiguan | Gen 2 (2012-2017) | 2012–2017 | 2.0T TSI | Auto (6 Speed) | FWD |
RELATED PRODUCTS
Recommended additions for your setup.
YOU MAY ALSO LIKE
Other great parts based on your browsing
