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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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5Q0121253H - : Radiator for Audi Image

Radiator

Auxiliary. From 10/17/2016. To 05/25/2015. Audi part number 5Q0-121-253-H, the factory Radiator, moves heat out of the engine and...
$226.31
MSRP $295.82
Save $69.51
23.5% Off
4K0121212C - : Radiator for Audi Image

Radiator

2.9L, auxiliary. Side. S6. Right. At wheelhouse. S7. This factory Audi Radiator (4K0-121-212-C) moves heat out of the engine and charge...
$196.35
MSRP $256.66
Save $60.31
23.5% Off
4K0121251P - : Radiator for Audi Image

Radiator

3.0L, main. This genuine Audi Radiator, part number 4K0-121-251-P, moves heat out of the engine and charge air circuits, and because...
$383.30
MSRP $504.99
Save $121.69
24.1% Off
7L6203491D - : Radiator for Audi Image

Radiator

With diesel engine. Listed under Audi part number 7L6-203-491-D, this Radiator moves heat out of the engine and charge air circuits,...
$110.04
MSRP $144.98
Save $34.94
24.1% Off
4K0121002 - : Radiator for Audi Image

Radiator

RS6 avant. RS7 sportback. Genuine Audi Radiator 4K0-121-002. This original equipment component moves heat out of the engine and charge...
$600.88
MSRP $791.66
Save $190.78
24.1% Off
4M0121212D - : Radiator for Audi Image

Radiator

Outer. Q7. 2.0L, auxiliary. Listed under Audi part number 4M0-121-212-D, this Radiator moves heat out of the engine and charge air...
$352.80
MSRP $489.99
Save $137.19
28% Off
8J0121251B - : Radiator for Audi Image

Radiator

2.5L, main. TT. Genuine Audi Radiator 8J0-121-251-B. This original equipment component moves heat out of the engine and charge air...
$759.37
MSRP $1,000.48
Save $241.11
24.1% Off
5Q0121251HQ - : Radiator for Audi Image

Radiator

A3. Secondary. 2.0L, diesel. This genuine Audi Radiator, part number 5Q0-121-251-HQ, moves heat out of the engine and charge air...
$271.29
MSRP $354.62
Save $83.33
23.5% Off
4H0121251C - : Radiator for Audi Image

Radiator

A8. Genuine Audi Radiator 4H0-121-251-C. This original equipment component moves heat out of the engine and charge air circuits, and...
$495.88
MSRP $653.33
Save $157.45
24.1% Off
5Q0121251GR - : Radiator for Audi Image

Radiator

A3. This factory Audi Radiator (5Q0-121-251-GR) moves heat out of the engine and charge air circuits, and because modern Audi engines...
$288.16
MSRP $376.67
Save $88.51
23.5% Off
8W0121212F - : Radiator for Audi Image

Radiator

RS5. 2.9L, auxiliary, right side, rear. Listed under Audi part number 8W0-121-212-F, this Radiator moves heat out of the engine and...
$597.08
MSRP $786.68
Save $189.60
24.1% Off
8K0121251AG - : Radiator for Audi Image

Radiator

A6. Genuine Audi Radiator 8K0-121-251-AG. This original equipment component moves heat out of the engine and charge air circuits, and...
$392.14
MSRP $516.65
Save $124.51
24.1% Off
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