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.

8R0121283N - : Radiator Support Baffle for Audi Image

Radiator Support Baffle

3.0L diesel.
$89.00 CAD
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8R0819373L - : HVAC Heater Hose for Audi Image

HVAC Heater Hose

Outlet. Heater Core To Valve.
$205.00 CAD
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8R0807217A - : Bumper Cover Spacer Panel for Audi Image

Bumper Cover Spacer Panel

Center cover. Q5, without s line. One piece design, SQ5.
$112.00 CAD
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8Y480792569D - : Bumper Cover Spacer Panel for Audi Image

Bumper Cover Spacer Panel

S3, 2025-26, matt chrome.
$221.00 CAD
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8W0819370C - : Hose for Audi Image

Hose

$35.67 CAD
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4G0853887C - : Radiator Support Baffle for Audi Image

Radiator Support Baffle

A6. S6.
$571.00 CAD
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4F0121107AG - : Hose Assembly for Audi Image

Hose Assembly

3.2L.
$157.00 CAD
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P2121237A - : Engine Water Pump Outlet Pipe for Audi Image

Engine Water Pump Outlet Pipe

4.0L. Pipe. Main.
$67.00 CAD
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6L145778M - : Oil Line for Audi Image

Oil Line

Oil inlet line. Q5. 2.0L 2018-20. Oil inlet tube.
$219.00 CAD
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420121232B - : Radiator Mount Bracket for Audi Image

Radiator Mount Bracket

Right Radiator. Lower.
$101.00 CAD
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4H0805594E - : Radiator Support Panel for Audi Image

Radiator Support Panel

Radiator Support Panel. Carrier. Center. Closure. Frame. Front c'member. Mount. Radiator. Fits A8, S7 Sportback, S8
$1,184.00 CAD
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