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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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5K0121253F - : Radiator for Audi Image

Radiator

3.2L. TT. Primary. Listed under Audi part number 5K0-121-253-F, this Radiator moves heat out of the engine and charge air circuits, and...
$380.03
MSRP $500.70
Save $120.67
24.1% Off
7L0121253A - : Radiator for Audi Image

Radiator

3.6L. Q7. 3.0l tdi. This genuine Audi Radiator, part number 7L0-121-253-A, moves heat out of the engine and charge air circuits, and...
$359.11
MSRP $473.13
Save $114.02
24.1% Off
4H0121212 - : Radiator for Audi Image

Radiator

4.0L, auxiliary, S8, engine code ctfa, cgta, left side, front. Genuine Audi Radiator 4H0-121-212. This original equipment component...
$284.33
MSRP $371.66
Save $87.33
23.5% Off
9J1121251A - : Radiator for Audi Image

Radiator

Audi part number 9J1-121-251-A, the factory Radiator, moves heat out of the engine and charge air circuits, and because modern Audi...
$503.47
MSRP $663.33
Save $159.86
24.1% Off
4K0121251E - : Radiator for Audi Image

Radiator

Main. RS6 avant. RS7 sportback. Listed under Audi part number 4K0-121-251-E, this Radiator moves heat out of the engine and charge air...
$642.62
MSRP $846.67
Save $204.05
24.1% Off
5K0121251AA - : Radiator for Audi Image

Radiator

Without tts model. A3. 2.0l. With awd. With timing chain. 648 x 444mm. The original equipment Audi Radiator supplied under part number...
$338.20
MSRP $445.57
Save $107.37
24.1% Off
8K0121251J - : Radiator for Audi Image

Radiator

S5. Manual trans. The original equipment Audi Radiator supplied under part number 8K0-121-251-J moves heat out of the engine and charge...
$495.88
MSRP $653.34
Save $157.46
24.1% Off
8W0121002 - : Radiator for Audi Image

Radiator

RS5. Center lower. 2.9L, auxiliary, center. This factory Audi Radiator (8W0-121-002) moves heat out of the engine and charge air...
$632.50
MSRP $833.33
Save $200.83
24.1% Off
4S0121212A - : Radiator for Audi Image

Radiator

Genuine Audi Radiator 4S0-121-212-A. This original equipment component moves heat out of the engine and charge air circuits, and because...
$432.11
MSRP $569.31
Save $137.20
24.1% Off
8K0121251AM - : Radiator for Audi Image

Radiator

Rs 5. S5. Auto trans. This genuine Audi Radiator, part number 8K0-121-251-AM, moves heat out of the engine and charge air circuits, and...
$524.98
MSRP $691.66
Save $166.68
24.1% Off
8K0121251L - : Radiator for Audi Image

Radiator

A5. A4. Q3. 2.0L, manual trans. Audi part number 8K0-121-251-L, the factory Radiator, moves heat out of the engine and charge air...
$395.95
MSRP $521.67
Save $125.72
24.1% Off
1EA121251B - : Radiator for Audi Image

Radiator

Awd. Q4 e-tron Sportback. Rwd. The original equipment Audi Radiator supplied under part number 1EA-121-251-B moves heat out of the...
$274.10
MSRP $358.30
Save $84.20
23.5% Off
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