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.

8R0121109 - : By-Pass Hose for Audi Image

By-Pass Hose

2.0L, gas.
$149.00 CAD
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8R0131984M - : Diesel Exhaust Fluid (Def) Injector Feed Line for Audi Image

Diesel Exhaust Fluid (Def) Injector Feed Line

Diesel, emission reduction system.
$965.00 CAD
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8R0825208E - : Floor Pan Splash Shield for Audi Image

Floor Pan Splash Shield

Shield used to direct water/debris away From the floor pan. Center. Floor Pan Splash. Lining. Side cover. Underbody. Fits Q5, SQ5
$685.00 CAD
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8K0121109 - : By-Pass Hose for Audi Image

By-Pass Hose

4.2L, return.
$108.00 CAD
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8T0121283K - : Air Duct for Audi Image

Air Duct

4.2L. Air duct. 3.2L.
$463.00 CAD
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4M0121285CL - : Radiator Support Air Duct for Audi Image

Radiator Support Air Duct

3.0L. 2.0L.
$136.00 CAD
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80A121081DB - : Overflow Hose for Audi Image

Overflow Hose

3.0L, main hoses, front.
$175.00 CAD
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8W0121262D - : Mount Bracket for Audi Image

Mount Bracket

Engine Cooling. Location-Wheel Arch. All Required. Auxiliary. Mount bracket.
$308.00 CAD
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4L0121284H - : Radiator Support Baffle for Audi Image

Radiator Support Baffle

With diesel engine.
$103.00 CAD
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