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.

4KE807611 - : Radiator Support Splash Shield for Audi Image

Radiator Support Splash Shield

With Q8 s-line exterior or SQ8, cover & components. Q8, without s-line exterior, cover & components.
$369.00 CAD
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8W0121251AK - : Radiator for Audi Image

Radiator

A5. A6 Quattro. A4. 2.0L.
$620.00 CAD
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8D0121403L - : Engine Coolant Reservoir for Audi Image

Engine Coolant Reservoir

6 cylinder, 2.8L.
$70.10 CAD
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1K0122291BN - : Water Hose Coupling for Audi Image

Water Hose Coupling

2.0L, gas engine code djja or dlra auxiliary radiator, left side. Sedan/wagon, engine code djja or dlra, auxiliary radiator, left side.
$26.35 CAD
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1K0121073AL - : Cooling System Bypass Line Adapter for Audi Image

Cooling System Bypass Line Adapter

Outlet. "T" to Thermostat Housing. Elbow. 3.2L, return, auto trans.
$13.80 CAD
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1K0122447EQ - : Overflow Hose for Audi Image

Overflow Hose

2006-08.
$5.00 CAD
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1J0122291D - : Lower Coupling for Audi Image

Lower Coupling

Convertible, 3.0L. Coupe, 3.0L, main.
$25.85 CAD
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1K0121447DM - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Pipe to Upper Radiator Hose "T". 3.2L, supply. 3.2L, feed.
$9.20 CAD
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1EA121053E - : Engine Coolant Pipe for Audi Image

Engine Coolant Pipe

Awd, rear, to 10/30/2023. Rwd with r-744 refrigerant rear.
$116.50 CAD
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1J0121087B - : Radiator Coolant Hose Adapter for Audi Image

Radiator Coolant Hose Adapter

Distributor. 3.2L, feed. 3.2L supply. Connector tube. 4.2L A4/S4 main.
$18.75 CAD
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