How to remove and refit a radiator on Audi A3?

To remove the radiator, first switch off the ignition and all electrical consumers. Undo the retaining screws and securing clips from the air filter housing and ducting, then remove it from in front of the battery tray. For engines other than the 1.6 litre SOHC, move the lock/radiator carrier to its Service position; for the 1.6 litre SOHC, only the front bumper needs to be removed. Drain the cooling system, which may involve removing the electric cooling fan temperature sensor from the bottom hose or disconnecting the bottom hose from the radiator. Disconnect the coolant hoses from the radiator by pulling out the clips and easing off the hoses. Disconnect the wiring from the cooling fan connector at the bottom left-hand side of the radiator and remove the fan assembly. On non-turbo models, remove the radiator side shields and undo the radiator securing bolts, then move the top of the radiator slightly to the rear and withdraw it upwards from the lower mounting rubber grommets. For turbo models, release the securing clip and disconnect the hose from the left-hand side of the intercooler, then undo the two retaining screws at each side of the radiator and withdraw it upwards similarly. If the radiator was removed due to suspected blockage, reverse flush it and clean dirt and debris from the radiator fins using an airline or a soft brush, taking care as the fins are sharp. A radiator specialist can perform a 'flow test' to check for internal blockages, and any leaking radiator should be taken to a specialist for permanent repair, avoiding attempts to weld or solder it. Check the radiator mounting rubbers and renew them if necessary. Refitting is the reverse of removal, and upon completion, refill the cooling system with the correct type of antifreeze.

How to replace the coolant reservoir and radiator on Audi A4?

To carry out the task of replacement of the radiator, first raise the front of the vehicle and hold it firmly on jackstands. Take off the bottom splash cover and empty the cooling system. Secondly, remove engine covers and front bumper and in 2.0L models, position radiator support panel in service position. Detach the upper and lower transaxle cooler lines of the automatic and seal them with a cap. Have the upper and bottom radiator hose clips lifted to detach the hose to the radiator and twist them (where needed) to release the O-ring. Take out the ducts by removing the air duct fasteners of either side of the radiator. Unplug the air conditioning pressure switch and ambient temperature sensor on the driver side of radiator and position the harness aside. Disassemble the mounting fasteners of the power steering cooler and drop the cooler without unscrewing the lines where provided. Removal of air conditioning condenser mounting fasteners and rotate the condenser out of and down the radiator, careful not to kink, stretch or bend the air conditioning lines. Unscrew the two radiator mounting pins, push the pins upwards to unscrew then remove the radiator. Installation of new radiator Before fitting the new radiator, replace any damaged hose clips, radiator hoses, and O-rings. Installation is done in the same manner as it is removed. Installation Refill and bleed the system and then start the engine checking all the leaks. In the case of expansion tank, empty the cooling system by draining it until the coolant drier is removed. Removal: Before removing the tank out of the engine compartment, take out the expansion tank mounting screw, lift the tank and disconnect the coolant level sensor connector. The reservoir should be clean and clear, so wash the reservoir with soapy water, and rinse thoroughly, etc. Installation is done in the same manner as it is removed.

Genuine Audi Radiator

Cooling Radiator

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130 Radiators found

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Audi Auxiliary Radiator Part Number: 8W0-121-218
$165.41 MSRP: $231.67
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
Fits the following Audi Models:
- S4 | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
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Audi Auxiliary Radiator Part Number: 4K0-121-212-B
$178.50 MSRP: $249.99
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
- Position: Left
Fits the following Audi Models:
- S6 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
- S7 Sportback | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
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Audi Auxiliary Radiator Part Number: 4K0-121-212-C
$183.26 MSRP: $256.66
You Save: $73.40 (29%)
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
- Position: Right
Fits the following Audi Models:
- S6 | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
- S7 Sportback | 2020-2023 | Premium, Premium Plus, Prestige | 6 Cyl 2.9 L MILD HYBRID EV-GAS (MHEV)
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Audi Radiator Part Number: 1J0-121-253-AD
$165.03 MSRP: $231.13
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Product Specifications
- Replaces: 1J0-121-253-N, 1J0-121-253-AT, 1J0-121-253-P
Fits the following Audi Models:
- TT | 2000-2006 | Base | 4 Cyl 1.8 L GAS
- TT Quattro | 2000-2006 | ALMS Edition, Base | 4 Cyl 1.8 L GAS
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Audi Auxiliary Radiator Part Number: 8N0-121-212
$180.88 MSRP: $253.33
You Save: $72.45 (29%)
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
Fits the following Audi Models:
- TT Quattro | 2004-2006 | Base, Special Edition | 6 Cyl 3.2 L GAS
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Audi Radiator Part Number: 8D0-121-251-AP
$190.40 MSRP: $266.67
You Save: $76.27 (29%)
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Product Specifications
- Replaces: 8D0-121-251-AN
Fits the following Audi Models:
- A4 | 2000-2001 | Base | 6 Cyl 2.8 L GAS
- A4 Quattro | 2000-2001 | Avant, Base | 6 Cyl 2.8 L GAS
- S4 | 2000-2002 | Avant, Base | 6 Cyl 2.7 L GAS
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Audi Auxiliary Radiator Part Number: 5Q0-121-251-HH
$219.09 MSRP: $306.85
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
- Replaced by: 5WA-121-251-M
Fits the following Audi Models:
- A3 Sportback e-tron | 2016-2018 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Audi Radiator Part Number: 5WA-121-251-D
$219.09 MSRP: $306.85
You Save: $87.76 (29%)
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Product Specifications
- Replaces: 5Q0-121-251-GL
Fits the following Audi Models:
- A3 | 2015-2016 | TDI Premium, TDI Premium Plus, TDI Prestige | 4 Cyl 2.0 L DIESEL
- A3 Sportback e-tron | 2016 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Audi Radiator Assembly Part Number: 5WA-121-251-H
$250.14 MSRP: $350.34
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Product Specifications
- Other Name: Radiator; Radiator Assembly
- Replaces: 5Q0-121-251-GN, 5QM-121-251-A, 5Q0-121-251-FN, 5Q0-121-251-ET, 5Q0-121-251-EP
Fits the following Audi Models:
- A3 | 2022-2024, 2015-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS
- A3 Quattro | 2022-2023, 2015-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- Q3 | 2019-2024 | Premium, Premium Plus, Prestige, S-Line Premium, S-Line Premium Plus, S-Line Prestige | 4 Cyl 2.0 L GAS
- S3 | 2022-2024, 2015-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- TT Quattro | 2016-2023 | Base | 4 Cyl 2.0 L GAS
- TTS Quattro | 2016-2023 | Base | 4 Cyl 2.0 L GAS
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Audi Radiator Assembly Part Number: 1K0-121-251-AB
$249.27 MSRP: $349.11
You Save: $99.84 (29%)
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Product Specifications
- Other Name: Radiator; Radiator Assembly
- Replaces: 1K0-121-251-EH, 1K0-121-251-DD, 1K0-121-251-BK, 1K0-121-251-N, 1K0-121-251-DM
Fits the following Audi Models:
- A3 | 2006-2013 | Base, TDI | 4 Cyl 2.0 L DIESEL, 4 Cyl 2.0 L GAS
- A3 Quattro | 2010-2013 | Base | 4 Cyl 2.0 L GAS
- TT | 2008-2009 | Base | 4 Cyl 2.0 L GAS
- TT Quattro | 2009-2015 | Base, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- TTS Quattro | 2009-2015 | Base | 4 Cyl 2.0 L GAS
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Audi Radiator Part Number: 1J0-121-253-S
$195.42 MSRP: $273.70
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Fits the following Audi Models:
- TT Quattro | 2004-2006 | Base, Special Edition | 6 Cyl 3.2 L GAS
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Audi Auxiliary Radiator Part Number: 5Q0-121-251-HA
$226.97 MSRP: $317.87
You Save: $90.90 (29%)
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
Fits the following Audi Models:
- A3 | 2017-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A3 Quattro | 2016-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- S3 | 2022-2024, 2015-2020 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- TT Quattro | 2016-2023 | Base | 4 Cyl 2.0 L GAS
- TTS Quattro | 2016-2023 | Base | 4 Cyl 2.0 L GAS
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Audi Auxiliary Radiator Part Number: 5WA-121-251-J
$243.95 MSRP: $341.66
You Save: $97.71 (29%)
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
- Replaces: 3Q0-121-251-B, 5Q0-121-251-HG
Fits the following Audi Models:
- A3 Sportback e-tron | 2016-2018 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Audi Radiator Part Number: 5Q0-121-251-GR
$268.95 MSRP: $376.67
You Save: $107.72 (29%)
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Product Specifications
- Replaces: 5QD-121-251-Q, 5QM-121-251-F
Fits the following Audi Models:
- A3 Sportback e-tron | 2016-2018 | Premium, Premium Plus, Prestige | 4 Cyl 1.4 L PLUG-IN HYBRID EV-GAS (PHEV)
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Audi Radiator Part Number: 80A-121-251-D
$286.79 MSRP: $401.67
You Save: $114.88 (29%)
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Fits the following Audi Models:
- Q5 | 2018-2023 | Premium, Premium Plus, Prestige, Titanium Premium, Titanium Premium Plus, Titanium Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- Q5 Sportback | 2021-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
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Audi Intercooler Part Number: 5Q0-121-251-HQ
$253.21 MSRP: $354.62
You Save: $101.41 (29%)
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Product Specifications
- Other Name: Radiator; Intercooler
- Replaces: 5Q0-121-251-GG, 5Q0-121-251-HP, 5Q0-121-251-GC, 5Q0-121-251-FB
Fits the following Audi Models:
- A3 | 2015-2016 | TDI Premium, TDI Premium Plus, TDI Prestige | 4 Cyl 2.0 L DIESEL
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Audi Radiator Part Number: 1EA-121-251-B
$255.83 MSRP: $358.30
You Save: $102.47 (29%)
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Fits the following Audi Models:
- Q4 e-tron | 2022-2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- Q4 e-tron Sportback | 2022-2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
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Audi Radiator Part Number: 4KE-121-251-B
$255.85 MSRP: $358.34
You Save: $102.49 (29%)
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Fits the following Audi Models:
- Q8 e-tron | 2024 | Launch Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- Q8 e-tron Sportback | 2024 | Launch Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron Quattro | 2021-2023, 2019 | Chronos Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron S | 2022-2023 | Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron S Sportback | 2022-2023 | Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron Sportback | 2020-2023 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
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Audi Auxiliary Radiator Part Number: 4H0-121-212
$265.37 MSRP: $371.66
You Save: $106.29 (29%)
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Product Specifications
- Other Name: Radiator; Auxiliary Radiator
Fits the following Audi Models:
- S8 | 2013-2016 | Base | 8 Cyl 4.0 L GAS
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Audi Radiator Part Number: 4E0-121-251-E
$233.24 MSRP: $326.67
You Save: $93.43 (29%)
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Fits the following Audi Models:
- A8 Quattro | 2004-2007 | Base, L | 8 Cyl 4.2 L GAS

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1-20 of 130 Results

Audi Radiator

With many moving parts in an engine, it is important to have a healthy cooling system to avoid overheating. The Audi radiator, especially, is vital in the cooling process. It provides for the transfer of heat from the coolant to the airflow caused by the fan. It ensures that excess heat is dissipated from the engine, thus ensuring its stable and safe operating temperature. Regular examination of car radiators by their owners is also vital, for they may need to be mended or changed completely.

It is better to choose OEM parts when it comes to the time for fixing them. Why? Because they fit perfectly well and ensure safety. For people who prefer doing their maintenance, the genuine Audi Radiator is quite perfect. At AudiPartsGiant.com, we specialize in genuine Audi Radiators only. Also, we offer an extensive online catalog with many categories, ample stock, and secure shopping. The Audi Radiator is shipped directly from authorized Audi dealers at competitive prices. So trust us, and we will give you nothing but superior service. Depend on us for all your genuine parts needs, and then we will keep your automobile moving smoothly.

Audi Radiator Parts and Q&A

Radiator Assembly
1K0-121-251-AB
Q: How to remove and refit a radiator on Audi A3?
A:
To remove the radiator, first switch off the ignition and all electrical consumers. Undo the retaining screws and securing clips from the air filter housing and ducting, then remove it from in front of the battery tray. For engines other than the 1.6 litre SOHC, move the lock/radiator carrier to its Service position; for the 1.6 litre SOHC, only the front bumper needs to be removed. Drain the cooling system, which may involve removing the electric cooling fan temperature sensor from the bottom hose or disconnecting the bottom hose from the radiator. Disconnect the coolant hoses from the radiator by pulling out the clips and easing off the hoses. Disconnect the wiring from the cooling fan connector at the bottom left-hand side of the radiator and remove the fan assembly. On non-turbo models, remove the radiator side shields and undo the radiator securing bolts, then move the top of the radiator slightly to the rear and withdraw it upwards from the lower mounting rubber grommets. For turbo models, release the securing clip and disconnect the hose from the left-hand side of the intercooler, then undo the two retaining screws at each side of the radiator and withdraw it upwards similarly. If the radiator was removed due to suspected blockage, reverse flush it and clean dirt and debris from the radiator fins using an airline or a soft brush, taking care as the fins are sharp. A radiator specialist can perform a 'flow test' to check for internal blockages, and any leaking radiator should be taken to a specialist for permanent repair, avoiding attempts to weld or solder it. Check the radiator mounting rubbers and renew them if necessary. Refitting is the reverse of removal, and upon completion, refill the cooling system with the correct type of antifreeze.
Radiator
8E0-121-251-A
Q: How to replace the coolant reservoir and radiator on Audi A4?
A:
To carry out the task of replacement of the radiator, first raise the front of the vehicle and hold it firmly on jackstands. Take off the bottom splash cover and empty the cooling system. Secondly, remove engine covers and front bumper and in 2.0L models, position radiator support panel in service position. Detach the upper and lower transaxle cooler lines of the automatic and seal them with a cap. Have the upper and bottom radiator hose clips lifted to detach the hose to the radiator and twist them (where needed) to release the O-ring. Take out the ducts by removing the air duct fasteners of either side of the radiator. Unplug the air conditioning pressure switch and ambient temperature sensor on the driver side of radiator and position the harness aside. Disassemble the mounting fasteners of the power steering cooler and drop the cooler without unscrewing the lines where provided. Removal of air conditioning condenser mounting fasteners and rotate the condenser out of and down the radiator, careful not to kink, stretch or bend the air conditioning lines. Unscrew the two radiator mounting pins, push the pins upwards to unscrew then remove the radiator. Installation of new radiator Before fitting the new radiator, replace any damaged hose clips, radiator hoses, and O-rings. Installation is done in the same manner as it is removed. Installation Refill and bleed the system and then start the engine checking all the leaks. In the case of expansion tank, empty the cooling system by draining it until the coolant drier is removed. Removal: Before removing the tank out of the engine compartment, take out the expansion tank mounting screw, lift the tank and disconnect the coolant level sensor connector. The reservoir should be clean and clear, so wash the reservoir with soapy water, and rinse thoroughly, etc. Installation is done in the same manner as it is removed.