Don't be fooled by other high-performance aftermarket options that utilize the OEM plastic rock guard. The OEM rock guard's vertical channel design is specifically designed to only work with the tube spacing found on the OEM core. When the OEM rock guard is installed on an aftermarket radiator, it actually blocks a significant amount of surface area. Obviously this is detrimental to the intended performance. During CSF's own R&D phase, CSF analyzed both the OEM and other aftermarket offerings and decided to go the extra mile. CSF redesigned the included rock guard to allow maximum flow to the radiator core, while still offering ample protection from small rocks and road debris - all proven on CSF's in-house wind tunnel. CSF's new Auxiliary Radiator fits both the left and right side of the vehicle as a drop-in fit. Thus requiring no modifications to install. Each features CNC machined mounting brackets and OEM style "Quick Connect" inlet/outlet connections. This makes for a true plug-and-play installation that does not interfere with aftermarket performance aero modifications.

Features

• 2-Row, 42mm Ultra High Performance Core
• 6.5mm Tall Multi-Louvered Fin with CSF's Exclusive B-Tube Technology
• CNC Machined Mounting Brackets and OEM Style "Quick Connect" Inlet/Outlet
• 100% All Aluminum TIG-Welded Construction
• Includes Detachable Aluminum Rock Guard (Industry Exclusive)
• Finished in a Thermal Black Protective Coating
• Fits Both Left & Right Side of Vehicle
• 2-Year Limited Warranty
• Drop-in Fit Requires No Modifications to Install
• Tested and Proven by CSF's Global Network of R&D Partners, Including Leading Time Attack Teams, Tuners, and Turbo Kit Manufacturers

Applications

• 2023+ BMW G42 M240i - Turbocharged 3.0L L6
• 2023+ BMW M240i - Turbocharged 3.0L L6
• 2022+ BMW G42 M240i xDrive - Turbocharged 3.0L L6
• 2022+ BMW M240i xDrive - Turbocharged 3.0L L6
• 2020-2022 BMW G20 M340i - Turbocharged 3.0L L6
• 2020-2024 BMW M340i - Turbocharged 3.0L L6
• 2020-2022 BMW G20 M340i xDrive - Turbocharged 3.0L L6
• 2020-2024 BMW M340i xDrive - Turbocharged 3.0L L6
• 2021-2024 BMW M440i - Turbocharged 3.0L L6
• 2022+ BMW G22 M440i - Turbocharged 3.0L L6
• 2022+ BMW G23 M440i - Turbocharged 3.0L L6
• 2024+ BMW M440i Gran Coupe - Turbocharged 3.0L L6
• 2021-2024 BMW M440i xDrive - Turbocharged 3.0L L6
• 2022+ BMW G23 M440i xDrive - Turbocharged 3.0L L6
• 2023+ BMW G22 M440i xDrive - Turbocharged 3.0L L6
• 2024+ BMW M440i xDrive Gran Coupe - Turbocharged 3.0L L6
• 2022+ BMW G29 Z4 M40i - Turbocharged 3.0L L6
• 2020 BMW G29 Z4 M40i First Edition - Turbocharged 3.0L L6
• 2021 BMW G29 Z4 sDrive M40i - Turbocharged 3.0L L6
• 2020-2022 BMW G29 Z4 sDrive30i - Turbocharged 2.0L L4
• 2024+ Toyota GR Supra 45th Anniversary Edition - 3.0L L6
• 2023+ Toyota GR Supra A91-MT Edition - 3.0L L6
• 2023+ Toyota GR Supra Premium - 3.0L L6
• 2024+ Toyota GR Supra Premium 45th Anniversary Edition - 3.0L L6
• 2020-2022 Toyota GR Supra - Turbocharged 3.0L L6
• 2020-2024 Toyota GR Supra - 3.0L L6

OEM Part Numbers

• BMW: 17 11 8 672 237 *M240i Yes (2 of them)
• BMW: 17-11-8-672-237 *M240i Yes (2 of them)
• BMW: 17118672237 *M240i Yes (2 of them)
• Toyota: 16400 WAA04
• Toyota: 16400-WAA04
• Toyota: 16400WAA04