CSF 2020+ Audi C8 RS6/RS7 High-Performance Intercooler System (OEM PN 4K0 145 805 P / 4K0 145 806 B) (csf8194)

OFF-ROAD OR MOTORSPORTS USE ONLY. This part is not CARB legal. It is not legal for sale or use on pollution-controlled motor vehicles in California or in other states that follow California emissions rules. It is sold for off-road or motorsports use only.

This is the CSF 2020+ Audi C8 RS6/RS7 High-Performance Intercooler System (OEM PN 4K0 145 805 P / 4K0 145 806 B). Part csf8194. An intercooler cools the charge air from the turbo or supercharger for denser air and more consistent power.

The most important feature of the CSF by PWR RS6/RS7 Intercooler System is the Formula-1 grade intercooler core. CSF's strategic relationship with PWR has allowed the inclusion of this core, which is unlike any other available in the performance aftermarket. Featuring two rows of rolled cooling tubes with inner fins, these cores make for the most efficient intercoolers available. Because of this, they are able to eliminate heat soak and lower IATs much more efficiently than traditional Bar & Plate or Tube & Fin designs. This gives us maximum performance for extended periods of time under demanding driving conditions and for vehicles with increased power levels through modifications and tuning. As with our other products produced through our PWR partnership, our new RS6/RS7 Intercoolers feature 100% TIG-welded machined billet aluminum end tanks vs. the OEM crimped cast aluminum end tanks. This feature is not only aesthetically pleasing, but is also stronger for longevity and durability on high-performance vehicles. The CNC machined billet end tanks are ready to withstand increased boost pressures from higher performance tunes, as well as upgraded turbochargers.

Features and benefits

• Eliminates Heat Soak and Lowers Intake Air Temperatures (IATs) for Maximum Performance in High-Performance and Race Conditions
• Replaces OEM Part Numbers: 4K0 145 805 P (Left) & 4K0 145 806 B (Right)
• Stage 1 (Stock Tune) +20 WHP / +18 WTQ
• Stage 2 (With High-Performance Tune) +10 WHP / +20 WTQ
• Formula-1 Performance Grade Core by PWR (2-Row Core Featuring Rolled Tubes w/ Inner Fins)
• CNC Machined Billet End Tanks
• 100% TIG Welded vs. OEM Style Gasket and Crimped End Tanks for Maximum Durability
• OEM Style Inlet/Outlet Connections for Precise Fitment With All OEM Components
• True Plug-and-Play "Drop-in Fit" Installation Requires Absolutely No Modifications
• Made in the USA at PWR North America

Product details

• Part type: Intercoolers
• Brand: CSF
• Core Material: Aluminum
• Installation Type: Drop-In Fit Installation
• Color: Raw Billet Aluminum
• Core Color: Raw Aluminum
• Core Row Quantity: 2
• Grade Type: Performance
• Inlet Fitting Gender: Male
• Inlet Tank Material: Billet Aluminum
• Mounting Hardware Included: No
• Outlet Fitting Gender: Male
• Core Length: 216mm
• Core Thickness: 87mm
• Core Width: 344mm
• Outlet Type: Barbed
• CSF part number: csf8194

Fitment

• Vehicle: Audi RS6 / RS7
• Years and trims on file: 2021-2023 Audi RS6 Avant Base; 2025 Audi RS6 Avant GT; 2024-2026 Audi RS6 Avant Performance; 2021-2023 Audi RS7 Sportback Base; 2024-2026 Audi RS7 Sportback Performance
• Application listing: CSF 2020+ Audi C8 RS6/RS7 High-Performance Intercooler System (OEM PN 4K0 145 805 P / 4K0 145 806 B)
• Check the vehicle, model years, engine and trim above against your car before ordering. Not sure? Ask us and we will check it against your VIN.

Emissions: off-road or motorsports use only

This part is not CARB legal and is sold for off-road or motorsports use only. It is not intended for use on vehicles driven on public roads. By ordering, the buyer accepts responsibility for checking and following federal, state and local emissions laws where the vehicle is used. Questions? Ask us before you order.

Shipping & returns

• Orders are processed within 1–3 business days; standard delivery is 3–7 business days within the United States.
• CSF parts are supplied through our distributor. We confirm availability and lead time with you after you order.
• We currently ship within the U.S. only. See our Shipping Policy.
• 30-day returns on unused parts in original packaging — see our Return Policy.

Installation at Team ANBD

Team ANBD is a performance shop in Andover, New Jersey. We can align or corner-balance the car, and prep track cars. Book an appointment or ask us about installation and fitment before you order.