CSF 8233 Level-Up Charge-Air Cooler Manifold Raw Billet for BMW S58 G8X M2/M3/M4

Vehicle Fitment

• 2021-2026 BMW M3 / M3 Competition / M3 CS (G80/G81, 3.0L I6 Twin-Turbo S58B30, RWD/AWD)
• 2021-2026 BMW M4 / M4 Competition / M4 CSL / M4 CS (G82/G83, 3.0L I6 Twin-Turbo S58B30, RWD/AWD)
• 2023-2026 BMW M2 (G87, 3.0L I6 Twin-Turbo S58B30, RWD)

Fitment Notes

• Drop-in fit - installs in the OEM location replacing the factory intake manifold and top-mount air-to-water intercooler with no modifications necessary
• Fits all S58 variants including base and Competition power levels
• Fits both automatic and manual transmission models
• Fits both AWD (xDrive) and RWD models
• Not compatible with the BMW B58 engine - different architecture. For B58, see CSF 8200/8400 series
• This listing is for the Raw Billet Aluminum finish (CSF #8233)
• OEM tube/fin intercooler core is prone to failing at pressures over 27 PSI - the CSF bar/plate core is pressure tested to 120 PSI
• Pre-installed fuel rail accepts most commonly used high-performance injectors with 7mm optimized aperture - CSF recommends Injector Dynamics ID1050x (PN 1050.34.14.14.6)

Features

• 40-60°F average reduction of intake air temperatures compared to OEM at 45 PSI - proven to lower intake manifold temperatures by up to 15%
• No pressure drop compared to OEM core despite significantly increased cooling capacity
• Ultra-strong CNC billet aluminum construction replaces weak OEM plastic tanks with crimped-on gasket sealing
• High-performance bar/plate intercooler core manufactured by PWR using Formula 1 grade technology - pressure tested to 120 PSI
• Pre-installed fuel rail with top-feed port injection capability and CNC machined block-off caps for non-use
• Integrated nitrous/methanol injection ports with block-off bungs included
• CFD-engineered plenum with special air guides ensuring even airflow distribution to all six cylinders for safe high-power tuning
• Integrated hose stand-offs for proper routing of EVAP hoses across manifold
• Integrated coolant reservoir mounting locations on rear of manifold for factory-perfect fitment
• CNC front wire harness bracket for OEM fitment with slotted easy installation
• Rear of manifold clearanced for easy access to engine oil filter
• Thermal Rejection Competition Spacer serves as both gasket and insulating layer between cylinder head and manifold
• Billet dowel pins between runners 1/2 and 5/6 for alignment stability during installation
• Runners machined with factory-style teeth for secure OEM O-ring retention

Specifications

• Part Number: CSF 8233
• Product Type: Level-Up Charge-Air Cooler Manifold
• Engine Application: BMW S58B30 3.0L Twin-Turbo I6
• Vehicle Application: 2021+ BMW M3/M4 (G80/G81/G82/G83), 2023+ BMW M2 (G87)
• Core Type: High-performance bar/plate air-to-water (by PWR)
• Core Pressure Test: 120 PSI
• IAT Reduction: 40-60°F average vs. OEM at 45 PSI
• Manifold Material: CNC machined billet aluminum
• Fuel Rail: Pre-installed, top-feed port injection (7mm injector aperture)
• Finish: Raw Billet Aluminum
• Collaboration: CSF x PWR x Studio RSR
• Warranty: 1-Year CSF Limited Warranty
• UPC: 710353082331

Included Components

• 1x CSF Level-Up Charge-Air Cooler Manifold (Raw Billet)
• 1x Thermal Rejection Competition Spacer (gasket + insulation)
• 1x Pre-installed Fuel Rail with injector ports
• CNC machined block-off caps for fuel injector ports (for non-port-injection use)
• Block-off bungs for nitrous/methanol injection ports (for non-use)
• Billet dowel pins for alignment
• CNC front wire harness bracket
• Complete hardware and installation kit

Product Description

The CSF 8233 is the "Level-Up" charge-air cooler manifold for the BMW S58B30 3.0L twin-turbocharged inline-6 engine, developed in collaboration with PWR (Formula 1 grade cooling technology) and Studio RSR (race development expertise). This CNC billet aluminum manifold replaces the factory intake manifold and OEM top-mount air-to-water intercooler with a significantly more capable system - delivering a 40-60°F average reduction in intake air temperatures compared to the OEM unit at 45 PSI boost, with no pressure drop and proven to lower manifold temperatures by up to 15%. The OEM tube/fin intercooler core is known to fail at pressures exceeding 27 PSI, while the CSF/PWR bar/plate core is individually pressure tested to 120 PSI for extreme reliability.

The manifold's plenum was engineered using advanced Computational Fluid Dynamics (CFD) software, with special air guides added to ensure even airflow distribution to all six cylinders - a critical safety measure for high-power builds where uneven air distribution can lead to individual cylinders running dangerously lean. A pre-installed fuel rail provides top-feed port injection capability with a 7mm optimized aperture per cylinder for compatibility with most commonly used high-performance injectors, with CNC machined block-off caps included for builds not yet running port injection. Integrated nitrous and methanol injection ports with block-off bungs provide additional fueling options. The Thermal Rejection Competition Spacer serves as both a precision gasket and an insulating layer between the cylinder head and manifold, reducing conductive heat transfer and improving charge-air cooler efficiency.

Every detail of the CSF Level-Up manifold is designed for OEM-quality fitment on a race-grade platform. Runners are machined with factory-style teeth for secure OEM O-ring retention - an exclusive design that prevents O-rings from dislodging during installation. Billet dowel pins between runners 1/2 and 5/6 ensure proper alignment and stability. Integrated coolant reservoir mounting locations, EVAP hose stand-offs, wire harness provisions, and a CNC front wire harness bracket ensure that the manifold integrates seamlessly into the engine bay with no loose routing or makeshift solutions. The rear of the manifold is clearanced for easy oil filter access. Whether you are building a 700+ horsepower street car, preparing an M4 for time attack, or assembling a dedicated drag M3, the CSF 8233 delivers the cooling capacity, structural strength, and integrated fueling provisions that the S58 platform demands at serious power levels.