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.

6E121119G - : Engine Coolant Thermostat Housing O-Ring for Audi Image

Engine Coolant Thermostat Housing O-Ring

Q7. O-ring. 2016-18, front. 2017-19. 3.0L gas front.
$7.45 CAD
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8W6121763A - : Radiator Support Air Deflector for Audi Image

Radiator Support Air Deflector

2018-19, S5.
$286.00 CAD
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8K0821135H - : Fender Brace for Audi Image

Fender Brace

Front support. 2013-2016.
$479.00 CAD
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8K0145805P - : Inter-Cooler for Audi Image

Inter-Cooler

A5. A4. From 9/10/12. Q5. 2.0l. 2.0L, gas. A6. 2.0l. 2013-2016. To 9/10/12. Convertible, 2.0L.
$514.00 CAD
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5Q0122051CT - : Lower Hose for Audi Image

Lower Hose

A3. Primary Radiator. Sedan, 1.8L. Sedan/wagon, engine code czra.
$248.50 CAD
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5Q0121447G - : Engine Coolant Overflow Hose for Audi Image

Engine Coolant Overflow Hose

Engine code czra. Vent hose. 2.0L, code dlra left side. 2.0L, gas engine code dhha right side. 2.0L, code cntb. Sedan, 1.8L. Sedan,...
$19.55 CAD
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8Y0121294E - : Radiator Support Air Duct for Audi Image

Radiator Support Air Duct

Engine code: dnvb or dywa. lower side.
$84.00 CAD
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8R0121081P - : Overflow Hose for Audi Image

Overflow Hose

Overflow hose. 3.2L, supply.
$207.00 CAD
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8W0121763 - : Radiator Support Air Deflector for Audi Image

Radiator Support Air Deflector

2017 A4, without s-line.
$253.00 CAD
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80A807320E - : Bumper Cover Spacer Panel for Audi Image

Bumper Cover Spacer Panel

Without sportback, bumper system code: 2k3,2k7,2k8,2k9, code: 2k3,2k9.
$446.00 CAD
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6B121070H - : Engine Coolant Bypass Pipe for Audi Image

Engine Coolant Bypass Pipe

1.8L. Water pipe.
$283.00 CAD
View Details

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