CSF B58 Thermal Rejection Competition Spacer CSF 8200S Thermal Rejection Spacer 2018+ Toyota GR Supra A90 A91 BMW CSF B58 Engine Race X Charge Air Cooler Manifold CSF Gen 2 B58 Race X Charge Air Cooler Manifold Thermal Black Finish 8200S CSF B58 Thermal Rejection Competition Spacer BMW G20 22 G30. The CSF B58 Thermal Rejection Competition Spacer is the next level upgrade for the B58 Super Manifold (CSF #8200). Made from KIYLEX, a patented revolutionary high performance final stage polymer. KIYLEX is as strong as aluminum and can withstand temperatures up to 1100'F. This spacer is designed to insulate the intake manifold from conductive heat transfer from the cylinder head. This thermal barrier reduces manifold temperatures which helps lower Intake Air Temperatures (IATs), improve charge air cooler efficiency, and combats heat soak. CSF is the exclusive distributor for the KIYLEX Intake Manifold Spacer for the B58 Motor. This Part Fits: Year Make Model Submodel 2020 2023 BMW 540i Base 2020 2023 BMW 540i xDrive Base 2018 2022 BMW 740i Base 2018 2022 BMW 740i xDrive Base 2020 2022 BMW 745e xDrive Base 2020 2025 BMW 840i Base 2020 2025 BMW 840i Gran Coupe Base 2020 2025 BMW 840i xDrive Base 2020 2025 BMW 840i xDrive Gran Coupe Base 2023 2025 BMW M240i Base 2022 2025 BMW M240i xDrive Base 2020 2024 BMW M340i Base 2020 2024 BMW M340i xDrive Base 2021 2024 BMW M440i Base 2024 BMW M440i Gran Coupe Base 2021 2024 BMW M440i xDrive Base 2022 2024 BMW M440i xDrive Gran Coupe Base 2020 2024 BMW X3 M40i 2020 2025 BMW X4 M40i 2020 2023 BMW X5 sDrive40i 2019 2023 BMW X5 xDrive40i 2021 2023 BMW X5 xDrive45e 2020 2021 BMW X6 sDrive40i 2020 2023 BMW X6 xDrive40i 2019 2023 BMW X7 xDrive40i 2022 2025 BMW Z4 M40i 2020 BMW Z4 M40i First Edition 2020 2021 BMW Z4 sDrive M40i 2024 Toyota GR Supra 45th Anniversary Edition 2021 2022 Toyota GR Supra A91 Edition 2023 Toyota GR Supra A91 MT Edition 2020 2025 Toyota GR Supra Base 2020 Toyota GR Supra Launch Edition 2020 2025 Toyota GR Supra Premium