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.

6N145778 - : Turbocharger Oil Line for Audi Image

Turbocharger Oil Line

Oil inlet tube. A4 allroad. A4 Quattro. 2017-25 2021-25. 2.0L.
$170.00 CAD
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6M121159C - : Turbocharger Coolant Line Adapter for Audi Image

Turbocharger Coolant Line Adapter

Adapter. 2.9L main, right side. 2.9L turbocharger. 3.0L.
$19.50 CAD
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7L6122073H - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Front Engine Pipe to Front Heater Pipe Assy. Diesel, upper, 2010-12. 3.0L, #4.
$135.00 CAD
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7L0121276A - : Radiator Upper Insulator for Audi Image

Radiator Upper Insulator

Diesel, main. Engine Cooling Radiator. Gas, main. Primary Radiator. 3.6L. 4.2L. 3.0L, main.
$13.15 CAD
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6Q0122291F - : Radiator Coolant Hose Adapter for Audi Image

Radiator Coolant Hose Adapter

1.8L, 225 horsepower, lower hose. 3.2L main. 1.8L 180 horsepower. lower hose.
$22.70 CAD
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6F121447 - : Engine Coolant Hose for Audi Image

Engine Coolant Hose

Distributor Piece to Reservoir Pipe. 2.0L 2011-15 with awd, tts feed. Connector hose. Water hose. 2009 without awd. 2.0L 2006-08. 2.0L...
$66.30 CAD
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N91119401 - : Engine Core Plug for Audi Image

Engine Core Plug

Location-Engine Block. 10 x 1 x 10mm. 4.2L, feed, 2007-10. From Chassis/VIN 8E-6-221 676. M10x1x10. 4.2L return. 4.2L, supply, lower....
$8.55 CAD
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5Q0122291BL - : Upper Coupling for Audi Image

Upper Coupling

Primary Radiator. Upper Radiator Coolant Hose. At Radiator. Incl.C-Clip and Seal. 2.0L, code cyfb, left side. 2.0L, gas engine code djja...
$47.95 CAD
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5Q0121070BR - : Engine Coolant Pipe for Audi Image

Engine Coolant Pipe

Connector pipe. 2.0L, gas engine code czra. Engine code dhha, right side. 2.0L, code dhha right side. 2.0L, gas engine code cntc. 1.8L....
$157.50 CAD
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5Q0122058B - : Water Hose Assembly for Audi Image

Water Hose Assembly

Engine Cooling. Water Pump to Pipe and Valve. Incl.Coupling. Right side.
$79.90 CAD
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5Q0122101EA - : Upper Hose for Audi Image

Upper Hose

A3. To 04/10/2017. To 05/15/2017. TT Quattro. TTS Quattro.
$181.00 CAD
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5Q0122291CJ - : Radiator Coolant Hose Adapter for Audi Image

Radiator Coolant Hose Adapter

Sedan/wagon, engine code djja or dlra, auxiliary radiator, left side. 2.0L, code cyfb, auxiliary-left side. Sedan/wagon, engine code...
$7.90 CAD
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