CSF Racing & Performance Division strives to build and engineer the most advanced, efficient, and reliable cooling systems in the world. Features: Sold as a set (Pair of Left & Right) Eliminates Heat Soak and Lowers Intake Air Temperatures (IATs) for Maximum Performance in High-Performance and Race Conditions 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 Raw Billet Aluminum Finish (#8194) Thermal Black Heat Dispersion Powder-Coating Finish (#8194B) Made in the USA at PWR North America * Compared to OEM Intercoolers With Same-Day Dyno Testing by VF Engineering Applications: 2021+ Audi C8 RS6 2021+ Audi C8 RS7 OEM Part Numbers: 4K0 145 805 P (Left) & 4K0 145 806 B (Right)