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CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade

CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade

CTS TURBO
Availability:
5+ in stock, ready to be shipped

Ships in 3–5 business days

SKU CTS-B8S4-AWIC
$559.99 - $559.99
$559.99
$559.99 - $559.99
$559.99
CALIFORNIA WARNING

Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information see www.P65Warnings.ca.gov/motor-vehicle-parts.

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CTS B8/B8.5 Audi S4/S5 Air-to-Water Heat Exchanger (Intercooler) Upgrade for your supercharged 3.0T engine!

Avoid heatsoak by replacing the small factory cooler; this is a must for any modified V6 supercharged S4/S5/Q5/SQ5 3.0TFSI. Keep your air temperature low with our premium AWIC upgrade kit. Strongly recommended to be used on stage 2 and up tuned vehicles. Air intake temps are reduced by 10F-12F. Features:
  • Efficient lightweight construction
  • Triple-pass core. No additional coolant pump required
  • Designed using the latest 3D scanning technology
  • Complete replacement for restrictive factory part
  • Reduces intake air temperature
  • Reduces coolant temperatures
  • Helps Maintains consistent power in extreme conditions
  • Drain plug and bleed port to ensure no air is trapped while adding coolant
  • Easy installation, perfect fit
Kit Includes:
  • Heat Exchanger (24" x 17" x 2.5")
  • Brackets & Hardware
  • Coolant Hose
  • Hose Connectors
  • Hose Clamps
Fitment:
  • 2010-2016 Audi S4 (V6T supercharged)
  • 2010-2017 Audi S5 (V6T supercharged)
  • 2013-2017 Audi Q5 (V6T supercharged)
  • 2014-2017 Audi SQ5 (V6T supercharged)
NB:
  • Some 2010-2012 B8 S4 vehicles equipped with Audi Drive Select (ADS); you will have to order an Additional oil cooler for ADS.
  • ADS cooler is visible through the front grille, see photos below. Usually comes on early 2010-2012 B8 S4 vehicles equipped with Dynamic Steering and Dynamic Suspension.
  • On B8.5 vehicles (2013 and up), the hose from the top right (90deg outlet) will connect to the lower hose on the stock cooler. The hose from the bottom right (straight outlet) will connect to the upper hose on the stock cooler. Note the hose location before removing the factory cooler.
B8.5 Audi S4 installation by Boost Dynamic Tuning: https://youtu.be/mpQ-r2AaLhE?si=Kx9_w4oVQBbfg3vu

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 3 applications
SQ5
Make Model Engine Years
AUDI SQ5 (B8/8.5) 2014–2017
S4
Make Model Engine Years
AUDI S4 (B8/8.5) 2010–2016
S5
Make Model Engine Years
AUDI S5 (B8/8.5) 2008–2017

Fitment data last updated: 2026-09-29

Fits 3 vehicle applications Check vehicle fitment before ordering View fitment

About this Intercooler

The CTS TURBO CTS-B8S4-AWIC intercooler cools the air coming out of the turbocharger or supercharger before it enters the engine. Cooler air is denser, which helps performance and consistency, especially under repeated hard driving.

Frequently asked questions

What does an intercooler do?

Compressing air heats it up. The intercooler removes some of that heat, so the engine gets denser, cooler air, which reduces the risk of knock and helps the engine keep making power.

What are the benefits of an upgraded intercooler?

A larger or more efficient core keeps intake temperatures lower during repeated pulls or hot weather, reducing heat soak. The gain matters most on tuned engines running more boost than stock.

What are the signs of a leaking intercooler?

Loss of power, boost-related fault codes, oil residue on the intercooler or its hoses, or a hissing sound under boost. A boost leak test will confirm it.

Does an intercooler upgrade need a tune?

Most bolt-on intercoolers work without a tune, and they often complement one. Check the product details for fitment notes, such as bumper trimming or relocated parts.

How do I make sure this intercooler fits my car?

Compare the part numbers listed on this page with the number on your old part or in your vehicle's parts catalog, and check the fitment information. If you are unsure, contact us with your VIN before ordering.

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