






CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
Beat heatsoak on your supercharged Audi 3.0TFSI with the CTS Turbo air-to-water heat exchanger, a direct upgrade over the undersized factory cooler. It is essential kit for any modified V6 S4/S5/Q5/SQ5, keeping charge temperatures down so power stays consistent. Strongly recommended on stage 2 and higher tunes; intake air temps drop roughly 10F-12F.
What you get
- Efficient lightweight construction
- Triple-pass core — no additional coolant pump required
- Developed with the latest 3D scanning technology
- Complete replacement for the restrictive factory part
- Lowers intake air and coolant temperatures
- Holds power steady in extreme conditions
- Drain plug and bleed port so no air is trapped during a coolant fill
- Easy installation with a perfect fit
Kit includes
- Heat exchanger (24" x 17" x 2.5")
- Brackets and 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)
Some 2010-2012 B8 S4 cars with Audi Drive Select (ADS) require an additional oil cooler for ADS; the ADS cooler is visible through the front grille (see photos). It usually appears on early 2010-2012 B8 S4 cars equipped with Dynamic Steering and Dynamic Suspension.
Ships from our Vancouver shop — KORE SPEED is proudly Canadian-owned, with no surprise cross-border duties for Canadian buyers. Questions on fitment? Email support@korespeed.com.
Pairs well with

CTS B8/B8.5 Audi S4/S5/Q5/SQ5 3.0T Supercharged Heat Exchanger Upgrade
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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