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Radiator: Keeping Your Car Cool for the Long Haul

Your vehicle’s engine must operate within a specific temperature range to remain at peak efficiency and prevent damage from excessive heat. In early years, automotive engines relied on ventilation, directing airflow to the engine to keep it cool, but today’s advanced engines require complex cooling systems to regulate their temperature. A key part of this system is the radiator.

The radiator is a large, rectangular component near the front of the engine compartment. It’s comprised of small veins that carry engine coolant — typically a mixture of antifreeze and water — through fins that allow airflow to lower the coolant’s temperature before it heads back to the engine. This cooling, combined with the thermostat and water pump regulating coolant flow, helps control the engine temperature. One essential component in the radiator system is the radiator drain plug, which allows you to safely drain coolant when performing maintenance or repairs.

If the radiator becomes damaged, it can leak, leading to a low-coolant condition and overheating. A radiator can also become clogged due to rust and debris in the cooling system. In either case, replacing the radiator or its parts, including the radiator drain plug, is the best way to ensure your vehicle’s engine doesn’t overheat.

Get a Genuine Replacement Radiator and Parts at AutoNation Parts

If your vehicle’s radiator or its related parts, such as a petcock, radiator drain plug, or support shield, become damaged or fail, timely replacement will ensure no damage occurs to your vehicle’s engine. AutoNation Parts has what you need to keep this from happening with its wide selection of genuine replacement radiators and related parts to restore the cooling system to peak operation.

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80A145804F - : Radiator for Audi Image

Radiator

2.0L plug-in hybrid. Q5 PHEV. Front. Genuine Audi Radiator 80A-145-804-F. This original equipment component moves heat out of the...
$507.27
MSRP $668.34
Save $161.07
24.1% Off
4KE121251B - : Radiator for Audi Image

Radiator

E-tron Quattro. E-tron Sportback. This factory Audi Radiator (4KE-121-251-B) moves heat out of the engine and charge air circuits, and...
$274.13
MSRP $358.34
Save $84.21
23.5% Off
4H0145804A - : Radiator for Audi Image

Radiator

A8. Center. This genuine Audi Radiator, part number 4H0-145-804-A, moves heat out of the engine and charge air circuits, and because...
$524.98
MSRP $691.66
Save $166.68
24.1% Off
4M8121002 - : Radiator for Audi Image

Radiator

4.0L, auxiliary, rsq8. RS Q8. The original equipment Audi Radiator supplied under part number 4M8-121-002 moves heat out of the engine...
$552.00
MSRP $766.67
Save $214.67
28% Off
7L8121212A - : Radiator for Audi Image

Radiator

Gas, auxiliary. Q7. This genuine Audi Radiator, part number 7L8-121-212-A, moves heat out of the engine and charge air circuits, and...
$385.81
MSRP $508.32
Save $122.51
24.1% Off
8W0121251AA - : Radiator for Audi Image

Radiator

Q5 PHEV. 2.0L plug-in hybrid. A7 sportback. Genuine Audi Radiator 8W0-121-251-AA. This original equipment component moves heat out of...
$419.98
MSRP $553.33
Save $133.35
24.1% Off
5WA121251D - : Radiator for Audi Image

Radiator

A3. 1.4L, engine cooling. Primary. This factory Audi Radiator (5WA-121-251-D) moves heat out of the engine and charge air circuits, and...
$234.74
MSRP $306.85
Save $72.11
23.5% Off
5WA121251J - : Radiator for Audi Image

Radiator

A3. Lower. 1.4L, auxiliary, from 07/26/2016. Audi part number 5WA-121-251-J, the factory Radiator, moves heat out of the engine and...
$261.38
MSRP $341.66
Save $80.28
23.5% Off
85E121251A - : Radiator for Audi Image

Radiator

This genuine Audi Radiator, part number 85E-121-251-A, moves heat out of the engine and charge air circuits, and because modern Audi...
$301.91
MSRP $394.65
Save $92.74
23.5% Off
8E0121212H - : Radiator for Audi Image

Radiator

S4, RS4. Additional radiator. All. TT. Right. Auxiliary. The original equipment Audi Radiator supplied under part number 8E0-121-212-H...
$490.82
MSRP $646.67
Save $155.85
24.1% Off
8W0121218 - : Radiator for Audi Image

Radiator

S5. S4. Convertible, 3.0L, auxiliary. This genuine Audi Radiator, part number 8W0-121-218, moves heat out of the engine and charge air...
$177.23
MSRP $231.67
Save $54.44
23.5% Off
8W0121251AK - : Radiator for Audi Image

Radiator

A5. A4 allroad. Q7. 2.0L. A6 Quattro. 2021. Audi part number 8W0-121-251-AK, the factory Radiator, moves heat out of the engine and...
$442.75
MSRP $583.34
Save $140.59
24.1% Off
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