The CSF 8402 is an S58 No Limit billet air-to-air competition intake manifold for the BMW G8X M2, M3, and M4 and the F97 X3 M and F98 X4 M with the S58 inline-six. It is fully CNC-machined from solid 6061 billet aluminum by Custom Plenum Creations in Australia. Unlike drop-in charge coolers, it removes the charge cooler from the manifold entirely, which resolves the core-size limit of drop-in options and lets a much larger intercooler core mount separately in the front end. It uses internal velocity stacks, O-ring-sealed surfaces rated to 100-plus psi, a flange for larger 77mm S55 throttle bodies, two integrated sensor pads, and a thermal-rejection spacer that cuts manifold temperature up to 15 percent. It is engineered for 1500-plus horsepower and has supported 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: internal velocity stacks, 100+ psi O-ring seal, 77mm S55 throttle-body flange, sensor pads, thermal-rejection spacer (up to 15 percent cooler)
- Engine: S58 inline-six
- Capability: engineered for 1500+ HP; proven on 7-second cars
- Use: motorsport use only; requires extensive modification
- Part number: 8402
Vehicle Applications
For the following (S58; motorsport use only):
- 2023 BMW M2 (G87, S58)
- 2024 BMW M2 (G87, S58)
- 2025 BMW M2 (G87, S58)
- 2026 BMW M2 (G87, S58)
- 2021 BMW M3 (G80/G81, S58)
- 2022 BMW M3 (G80/G81, S58)
- 2023 BMW M3 (G80/G81, S58)
- 2024 BMW M3 (G80/G81, S58)
- 2025 BMW M3 (G80/G81, S58)
- 2026 BMW M3 (G80/G81, S58)
- 2021 BMW M4 (G82/G83, S58)
- 2022 BMW M4 (G82/G83, S58)
- 2023 BMW M4 (G82/G83, S58)
- 2024 BMW M4 (G82/G83, S58)
- 2025 BMW M4 (G82/G83, S58)
- 2026 BMW M4 (G82/G83, S58)
- 2020 BMW X3 M (F97, S58)
- 2021 BMW X3 M (F97, S58)
- 2022 BMW X3 M (F97, S58)
- 2023 BMW X3 M (F97, S58)
- 2024 BMW X3 M (F97, S58)
- 2020 BMW X4 M (F98, S58)
- 2021 BMW X4 M (F98, S58)
- 2022 BMW X4 M (F98, S58)
- 2023 BMW X4 M (F98, S58)
- 2024 BMW X4 M (F98, S58)
- 2025 BMW X4 M (F98, S58)
FAQ
What is the CSF 8402?
A billet 6061 aluminum air-to-air competition intake manifold for the BMW S58, machined by Custom Plenum Creations in Australia.
Which vehicles does it fit?
The BMW G87 M2, G80/G81 M3, G82/G83 M4, F97 X3 M, and F98 X4 M with the S58 engine.
Why remove the charge cooler from the manifold?
It resolves the core-size limit of drop-in options and lets a much larger intercooler core mount separately in the front end.
Is it street legal?
No. It is a motorsport-only part and requires extensive modification to install.
