The CSF 8401 is a B58 No Limit billet air-to-air competition intake manifold for the turbocharged 3.0L B58 inline-six, fitting the BMW G20 M340i, G22/G23 M440i, G26 M440i Gran Coupe, G29 Z4 M40i, and G42 M240i, as well as the Toyota GR Supra (A90/A91) and B58 engine swaps. It is fully CNC-machined from solid 6061 billet aluminum by Custom Plenum Creations in Australia, with high-pressure O-ring-sealed construction rated to 100-plus psi. It removes the charge cooler from the manifold so a larger intercooler core can mount separately, and adds internal velocity stacks, a flange for larger 77mm S55 throttle bodies, modular ports for port injection, nitrous, or methanol, and a thermal-rejection spacer. It is engineered for 1500-plus horsepower and has supported record 7-second quarter-mile passes. This is a motorsport-only part and requires extensive modification to install.
- Type: billet air-to-air competition intake manifold
- Material: solid 6061 billet aluminum, fully CNC-machined (CPC Australia)
- Design: charge cooler removed from manifold, enabling a larger front-mount IC core
- Features: velocity stacks, 100+ psi O-ring seal, 77mm S55 throttle-body flange, port-injection/nitrous/methanol ports, thermal-rejection spacer
- Engine: B58 turbocharged 3.0L inline-six
- Capability: engineered for 1500+ HP; proven on 7-second cars
- Use: motorsport use only; requires extensive modification
- Part number: 8401
Vehicle Applications
For the following (B58; motorsport use only):
- 2020 BMW M340i (G20, B58)
- 2021 BMW M340i (G20, B58)
- 2022 BMW M340i (G20, B58)
- 2023 BMW M340i (G20, B58)
- 2024 BMW M340i (G20, B58)
- 2021 BMW M440i (G22/G23, B58)
- 2022 BMW M440i (G22/G23, B58)
- 2023 BMW M440i (G22/G23, B58)
- 2024 BMW M440i (G22/G23, B58)
- 2022 BMW M440i Gran Coupe (G26, B58)
- 2023 BMW M440i Gran Coupe (G26, B58)
- 2024 BMW M440i Gran Coupe (G26, B58)
- 2019 BMW Z4 M40i (G29, B58)
- 2020 BMW Z4 M40i (G29, B58)
- 2021 BMW Z4 M40i (G29, B58)
- 2022 BMW Z4 M40i (G29, B58)
- 2023 BMW Z4 M40i (G29, B58)
- 2024 BMW Z4 M40i (G29, B58)
- 2025 BMW Z4 M40i (G29, B58)
- 2026 BMW Z4 M40i (G29, B58)
- 2023 BMW M240i (G42, B58)
- 2024 BMW M240i (G42, B58)
- 2025 BMW M240i (G42, B58)
- 2026 BMW M240i (G42, B58)
- 2020 Toyota GR Supra (A90/A91, B58)
- 2021 Toyota GR Supra (A90/A91, B58)
- 2022 Toyota GR Supra (A90/A91, B58)
- 2023 Toyota GR Supra (A90/A91, B58)
- 2024 Toyota GR Supra (A90/A91, B58)
- 2025 Toyota GR Supra (A90/A91, B58)
- 2026 Toyota GR Supra (A90/A91, B58)
FAQ
What is the CSF 8401?
A billet 6061 aluminum air-to-air competition intake manifold for the BMW/Toyota B58, machined by Custom Plenum Creations in Australia.
Which vehicles does it fit?
The BMW G20 M340i, G22/G23 M440i, G26 M440i Gran Coupe, G29 Z4 M40i, G42 M240i, and the Toyota GR Supra (A90/A91).
What power does it support?
It is engineered for 1500-plus horsepower and has supported record 7-second quarter-mile passes.
Is it street legal?
No. It is a motorsport-only part and requires extensive modification to install.
