Audi Lower Radiator Seal / Gasket 8K0121331A
OEM Part #: 8K0-121-331-A (8K0121331A)
This page covers one exact OEM part number. Every unit we stocked has sold.
We may be able to get another
Used OEM parts are one-of-a-kind. We sometimes get another when we dismantle a matching vehicle, but we can’t say when — browse what’s in stock now:
Other Radiator / Radiator Air Guide / Duct that may fit your vehicle
Auxiliary / Secondary Radiator
$77.99
Fits 2011–2023 Audi, Porsche + more
OEM: 7P0121212A
Porsche: 95810621210
Auxiliary / Secondary Radiator
$112.49
Fits 2012–2018 Audi
OEM: 4G0121212
Auxiliary Radiator Air Guide / Duct (OUTER)
$104.49
Fits 2016–2018 Audi A6 / S6
OEM: 4G0121333J
Auxiliary Radiator Air Guide / Duct (OUTER)
$99.99
Fits 2012–2015 Audi A6 / S6
OEM: 4G0121333G
Radiator
$99.99
Fits 2009–2017 Audi
OEM: 8K0121251T
Radiator
$99.99
Fits 2009–2017 Audi
OEM: 8K0121251K
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The OEM Lower Radiator Seal / Gasket (Part Number: 8K0121331A) is a critical component located at the base of the radiator assembly in various Audi models. It serves to create a tight seal between the radiator and the vehicle's body, ensuring that coolant flow is unobstructed and preventing leaks. This gasket is essential for maintaining optimal engine temperatures and preventing potential overheating. Common issues requiring replacement include deterioration due to age or exposure, which may lead to coolant leaks or inefficiencies in the cooling system. It is also referred to as the seal strip or lower seal. This part is compatible with a wide range of Audi vehicles including the A6, A5, Q5, RS5, S4, and others from 2008 to 2018, across multiple engine types. It’s crucial for maintaining the integrity of the radiator system and overall vehicle performance.
Specifications
| Fits Vehicle Model | A4, A5, A6, A7, A8, allroad, Q5, RS5, S4, S5, S8, SQ5 |
| Fits Vehicle Make | Audi |
| OEM Part No | 8K0-121-331-A (8K0121331A) |
| Category | Radiator / Coolant |
Compatible Vehicles
Fits 144 vehicle configurations across 1 make, 2008-2018.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 144 vehicle configurations — 26 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2008 | Audi | A5 | Quattro Coupe | 3.2L V6 | |
| 2008 | Audi | S5 | Coupe | 4.2L V8 | |
| 2009 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2009 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2009 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2009 | Audi | A4 | Quattro Sedan | 3.2L V6 | |
| 2009 | Audi | A5 | Quattro Coupe | 3.2L V6 | |
| 2009 | Audi | Q5 | SUV | 3.2L V6 | |
| 2009 | Audi | S5 | Coupe | 4.2L V8 | |
| 2010 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2010 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2010 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2010 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Manual Transmission |
| 2010 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2010 | Audi | A5 | Quattro Coupe | 3.2L V6 | |
| 2010 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2010 | Audi | Q5 | SUV | 3.2L V6 | |
| 2010 | Audi | S4 | Sedan | 3.0L V6 Supercharged | |
| 2010 | Audi | S5 | Coupe | 4.2L V8 | |
| 2010 | Audi | S5 | Convertible | 3.0L V6 Supercharged | |
| 2011 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2011 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2011 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2011 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Manual Transmission |
| 2011 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2011 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2011 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2011 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2011 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2011 | Audi | Q5 | SUV | 3.2L V6 | |
| 2011 | Audi | S4 | Sedan | 3.0L V6 Supercharged | |
| 2011 | Audi | S5 | Coupe | 4.2L V8 | |
| 2011 | Audi | S5 | Convertible | 3.0L V6 Supercharged | |
| 2012 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A4 | Quattro Wagon | 2.0L l4 Turbo | |
| 2012 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A5 | Convertible | 2.0L l4 Turbo | For Manual Transmission |
| 2012 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2012 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2012 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2012 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2012 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2012 | Audi | A8 | Quattro Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 4.2L V8 | |
| 2012 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2012 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2012 | Audi | Q5 | SUV | 3.2L V6 | |
| 2012 | Audi | S4 | Sedan | 3.0L V6 Supercharged | |
| 2012 | Audi | S5 | Coupe | 4.2L V8 | |
| 2012 | Audi | S5 | Convertible | 3.0L V6 Supercharged | |
| 2013 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A5 | Convertible | 2.0L l4 Turbo | |
| 2013 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2013 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2013 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2013 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2013 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2013 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2013 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2013 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2013 | Audi | Q5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2013 | Audi | RS5 | Convertible | 4.2L V8 | |
| 2013 | Audi | RS5 | Coupe | 4.2L V8 | |
| 2013 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA, CREC, CRED, CTUB |
| 2013 | Audi | S5 | Coupe | 3.0L V6 Supercharged | |
| 2013 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA |
| 2013 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A5 | Convertible | 2.0L l4 Turbo | |
| 2014 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2014 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For S Line Only |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Supercharged | |
| 2014 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | A8 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A8 | Quattro Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Supercharged | |
| 2014 | Audi | A8 | Quattro L Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 3.0L V6 Diesel Turbo | |
| 2014 | Audi | A8 | Quattro L Sedan | 6.3L W12 | |
| 2014 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2014 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2014 | Audi | Q5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2014 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CDUD, CPNB |
| 2014 | Audi | RS5 | Coupe | 4.2L V8 | |
| 2014 | Audi | RS5 | Convertible | 4.2L V8 | |
| 2014 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA, CREC, CRED, CTUB |
| 2014 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA |
| 2014 | Audi | S5 | Coupe | 3.0L V6 Supercharged | |
| 2014 | Audi | S8 | Sedan | 4.0L V8 Turbo | |
| 2014 | Audi | SQ5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2015 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2015 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Supercharged | |
| 2015 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | For S Line Only |
| 2015 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2015 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2015 | Audi | Q5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2015 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CDUD, CPNB |
| 2015 | Audi | RS5 | Coupe | 4.2L V8 | |
| 2015 | Audi | RS5 | Convertible | 4.2L V8 | |
| 2015 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA, CREC, CRED, CTUB |
| 2015 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA |
| 2015 | Audi | S5 | Coupe | 3.0L V6 Supercharged | |
| 2015 | Audi | SQ5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2016 | Audi | A4 | Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A4 | Quattro Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2016 | Audi | A5 | Quattro Coupe | 2.0L l4 Turbo | |
| 2016 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2016 | Audi | A6 | Quattro Sedan | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | A7 | Quattro Hatchback | 3.0L V6 Diesel Turbo | |
| 2016 | Audi | allroad | Wagon | 2.0L l4 Turbo | |
| 2016 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2016 | Audi | Q5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2016 | Audi | Q5 | SUV | 3.0L V6 Diesel Turbo | For Vehicles with Engine Code(s) CDUD, CPNB |
| 2016 | Audi | S4 | Sedan | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA, CREC, CRED, CTUB |
| 2016 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA |
| 2016 | Audi | S5 | Coupe | 3.0L V6 Supercharged | |
| 2016 | Audi | SQ5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2017 | Audi | A5 | Quattro Convertible | 2.0L l4 Turbo | |
| 2017 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2017 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo | |
| 2017 | Audi | Q5 | SUV | 2.0L l4 Turbo | |
| 2017 | Audi | Q5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2017 | Audi | S5 | Convertible | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CGWC, CGXC, CMUA |
| 2017 | Audi | SQ5 | SUV | 3.0L V6 Supercharged | For Vehicles with Engine Code(s) CTUC, CTVA |
| 2018 | Audi | A6 | Sedan | 2.0L l4 Turbo | |
| 2018 | Audi | A6 | Quattro Sedan | 2.0L l4 Turbo |