What Radiators Do

They're heatsinks. In other words, they help keep the engine in your Audi from overheating.

How a Radiator Works

In short, it uses coolant (antifreeze) to absorb the excess heat generated as your engine runs. Plus, it helps scatter the heat. The process is simple.

First, antifreeze flows through radiator hoses – inlet and outlet hoses, to be exact. The fluid gets pressurized by a radiator cap along the way. As it travels, it captures as much heat as it can. Then, flat, fin-style aluminum tubes expel the heat, with help from a fan to dispel it.

Some radiators have extra fins, called turbulators. They dissipate heat even better. Others have side-mounted tanks, called transmission coolers. They transfer the heat of transmission operation to the coolant.

Signs of Radiator Problems

Unfortunately, a radiator can go bad and even fail, but luckily, there are symptoms that'll tell you that's happening. They include:

  • Strange engine noises
  • A temperature gauge that reads unusually high
  • The sweet, syrupy odor of ethylene glycol (indicating a coolant leak)
  • Dirty or sludgy antifreeze
  • Coolant leaks
  • Heater and¬†air conditioning¬†malfunctions

To figure out what could be causing these problems, perform a thorough inspection.

Repair Your Audi Cooling System with Peace of Mind | Use a Genuine OEM Radiator

Whether you're looking to order a new radiator or just a few replacement cooling system parts, you've come to the right auto parts store. Our catalog has a vast selection, and everything's genuine, designed by Audi to work with the car or SUV model you drive, guaranteed. You can even order online. Buy now, and we'll ship fast, with delivery directly to your door.

79121057AF - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Adapter To Water Pump. 4.0L, primary. 4.0L without RS7 main return. 4.0L with RS7 front center. Hose.
$42.33 CAD
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5Q0121251HA - : Auxiliary Radiator for Audi Image

Auxiliary Radiator

S3. 2.0L, code dhha, auxiliary- right side. Engine code: dsfa. 2.0L, code cyfb, auxiliary- right side. Sedan/wagon, engine code djja or...
$499.00 CAD
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6E121082S - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Engine Oil Cooler. Valve to Pipe. 2017-19. 2016-18, front. Gas. From 11/16/2015. To 11/16/2015.
$44.00 CAD
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4M0121081AK - : Engine Coolant Overflow Hose for Audi Image

Engine Coolant Overflow Hose

2017-19, main. 2.0L, lower.
$95.50 CAD
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8W0121293A - : Radiator Support Air Duct for Audi Image

Radiator Support Air Duct

2.0L 2017-2019 auto trans. 2.0L 2020-24 40 tsfi. 2021-25. 2017-20. Convertible, lower. Coupe, 2.0 or 3.0L, lower. 2.0L 2020-25 45 tsfi....
$81.00 CAD
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5Q0121093FD - : Bracket for Audi Image

Bracket

2.0L, code dlra, auxiliary- right side. Engine code: dsfa. Mount bracket. Engine code cyfb, auxiliary radiator, right side. From...
$157.50 CAD
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8T0121405 - : Engine Coolant Reservoir for Audi Image

Engine Coolant Reservoir

Main. Rs 5.
$423.00 CAD
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6E121546D - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Supercharger Cooling. Outlet. Pipe to Pipe. 2016-18, auxiliary. 3.0L gas, auxiliary.
$24.00 CAD
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6E145621AC - : Inter-Cooler for Audi Image

Inter-Cooler

2017-19. A8. 3.0l. Gas, 2015-18. A6. 3.0l.
$1,170.00 CAD
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8R0819376J - : HVAC Heater Hose for Audi Image

HVAC Heater Hose

Outlet. From Valve.
$152.00 CAD
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8D0805121B - : Radiator Support Splash Shield Clip for Audi Image

Radiator Support Splash Shield Clip

3.0L. 2.0L. 1.8L. 3.2L. 2.7L. 4.2L, front & rear.
$14.10 CAD
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