The CSF 8194 is a high-performance twin intercooler set in a raw billet finish for the 2021-2025 Audi C8 RS6 Avant and RS7 Sportback, including Performance and GT variants, with the 4.0L twin-turbo V8. Each unit uses a Formula-1-grade core with two rows of rolled cooling tubes and inner fins, with 100 percent TIG-welded machined billet aluminum end tanks in place of the OEM crimped cast aluminum, and OEM-style inlet and outlet connections. It is a true plug-and-play drop-in fit requiring no modifications, and CSF rates gains of about 20 wheel horsepower and 18 wheel torque on a stock tune. A thermal black version is available as 8194B.
- Type: twin intercooler set (left and right)
- Core: F1-grade 2-row, rolled tubes with inner fins
- End tanks: 100 percent TIG-welded machined billet aluminum (OEM crimped cast)
- Engine: 4.0L twin-turbo V8
- Performance: about +20 whp / +18 wtq on a stock tune
- Finish: raw billet (thermal black: 8194B)
- Fitment: true plug-and-play drop-in, no modifications
- Part number: 8194
Vehicle Applications
Direct fit on the following (4.0L twin-turbo V8):
- 2021 Audi RS6 Avant (C8, 4.0L V8)
- 2022 Audi RS6 Avant (C8, 4.0L V8)
- 2023 Audi RS6 Avant (C8, 4.0L V8)
- 2024 Audi RS6 Avant (C8, 4.0L V8)
- 2025 Audi RS6 Avant (C8, 4.0L V8)
- 2021 Audi RS7 Sportback (C8, 4.0L V8)
- 2022 Audi RS7 Sportback (C8, 4.0L V8)
- 2023 Audi RS7 Sportback (C8, 4.0L V8)
- 2024 Audi RS7 Sportback (C8, 4.0L V8)
- 2025 Audi RS7 Sportback (C8, 4.0L V8)
FAQ
What vehicles does the CSF 8194 fit?
The 2021-2025 Audi C8 RS6 Avant and RS7 Sportback, including Performance and GT variants, with the 4.0L V8.
How much power does it add?
About 20 wheel horsepower and 18 wheel torque on a stock tune.
What are the end tanks made of?
Machined billet aluminum, 100 percent TIG-welded, versus the OEM crimped cast aluminum.
Is it a drop-in fit?
Yes. It is a true plug-and-play fit with no modifications. A thermal black version is available as 8194B.
