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CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)
CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)

CTS Turbo B9 Audi A4, A5, AllRoad 1.8T/2.0T and B9 Audi S4, S5 3.0T Upgraded Intercooler (Direct Fit)

CTS TURBO
Disponibilidad:
5+ en stock, listo para ser enviado

Ships in 3–5 business days

SKU CTS-B9-DF
$699.99 - $699.99
$699.99
$699.99 - $699.99
$699.99
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 Turbo is proud to announce our Direct fit FMIC for the B9 platform. Now in our updated black finish!

The OEM B9 intercoolers deliver underwhelming performance, this platform benefits greatly from an intercooler upgrade. Vehicles at stock boost levels up through Stage 1-2 and Big Turbo applications will all see a large improvement over the factory equipped hardware.

This giant intercooler core is almost 2 times larger than stock and meets our extensive quality control and pressure testing (up to 50psi). Cast aluminum end tanks attach to factory hoses seamlessly to ensure a boost-leak free fit that results in increased horsepower and torque.

Features:

    • Efficient bar and plate construction
    • Internal air-directing fins provide smooth flow and minimize pressure drop
    • Low pressure drop
    • Maintains factory mounting points
    • Designed using the latest 3D scanning technology
    • No trimming required, complete replacement for factory part
    • Rated for power levels in excess of 600HP
    • Core dimensions: 21.75 Length x 2.5" Tall x 16" Height
    • Cast aluminum end tanks results in superior flow

 

Fitment (does not fit models with active aerodynamic grill):

    • 2018-2021 S4 (B9) 3.0T
    • 2018-2021 (B9) 3.0T
    • 2017-2021 A4 (B9) 1.8T/2.0T
    • 2017-2021 A5 (B9) 1.8T/2.0T
    • 2017-2021 A4 Allroad (B9) 2.0T

This part also goes by the following cross reference.

Cross Reference Part Number:

Fits These Vehicles 5 applications
ALLROAD
Make Model Engine Years
AUDI ALLROAD (B9) 2017–2021
S4
Make Model Engine Years
AUDI S4 (B9) 2017–2021
A5
Make Model Engine Years
AUDI A5 (B9) 2017–2021
A4
Make Model Engine Years
AUDI A4 (B9) 2017–2021
S5
Make Model Engine Years
AUDI S5 (B9) 2018–2021

Fitment data last updated: 2026-09-29

Fits 5 vehicle applications Check vehicle fitment before ordering View fitment

About this Intercooler

The CTS TURBO CTS-B9-DF 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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