CSF 8300 Charge-Air Cooler Manifold Raw Billet for BMW Gen 1 B58 F-Chassis 3.0L

Vehicle Fitment

• 2016-2018 BMW 340i / 340i xDrive (F30/F31, 3.0L I6 Turbo B58, RWD/AWD)
• 2016-2018 BMW 440i / 440i xDrive (F32/F33/F36, 3.0L I6 Turbo B58, RWD/AWD)
• 2016-2018 BMW M240i / M240i xDrive (F22/F23, 3.0L I6 Turbo B58, RWD/AWD)
• 2017-2018 BMW 540i / 540i xDrive (G30/G31, 3.0L I6 Turbo B58, RWD/AWD)
• 2017-2018 BMW 640i xDrive GT (G32, 3.0L I6 Turbo B58, AWD)
• 2017-2018 BMW 740i / 740i xDrive (G11/G12, 3.0L I6 Turbo B58, RWD/AWD)
• 2018 BMW X3 M40i (G01, 3.0L I6 Turbo B58, AWD)
• 2018 BMW X4 M40i (G02, 3.0L I6 Turbo B58, AWD)

Fitment Notes

• Designed specifically for the Gen 1 BMW B58 3.0L turbocharged inline-6 engine in F-Chassis and early G-Chassis models
• Not compatible with the Gen 2 B58 (2019+ G-Chassis/Toyota Supra) - see CSF 8200/8400 for Gen 2 B58 applications
• Not compatible with the BMW S58 engine (M3/M4/M2) - see CSF 8233 for S58 applications
• This listing is for the Raw Billet Aluminum / Machined Billet finish (CSF #8300)
• Drop-in fit - replaces the OEM intake manifold and factory top-mount air-to-water intercooler
• Includes hardware and installation kit with picture diagrams containing 32 different parts for easy installation
• Some modifications may be required - intended for skilled technicians familiar with the B58 platform

Features

• Double the intercooler capacity of the OEM core - 12 rows of water cooling vs. OEM 6 rows
• Significantly lower pressure drop across the core compared to OEM for improved airflow and power delivery
• CNC billet aluminum construction, 100% TIG welded for strength - withstands higher boost pressures than the OEM plastic manifold
• Designed in SolidWorks using Computational Fluid Dynamics (CFD) with integrated air divider in inlet tank for even airflow distribution throughout the core
• Thermal Rejection Competition Spacer reduces heat transfer between the cylinder head and manifold, lowering intake air temperatures
• Integrated 3-port sensor pad with 1/8" NPT ports for measuring additional parameters or extra vacuum source
• Individual 1/8" NPT breather ports on both inlet and outlet water connections for easy system air-bleeding
• Improved slotted mounting holes on throttle body side for easier installation
• Easy access to spin-off oil filter maintained - no need to uninstall manifold for every oil change
• Battle-tested at Pikes Peak International Hill Climb, Global Time Attack, and Texas 2K drag racing on Gen 2 B58 platform (same core design)

Specifications

• Part Number: CSF 8300
• Product Type: Charge-Air Cooler Manifold ("Super Manifold" for Gen 1 B58)
• Engine Application: BMW Gen 1 B58 3.0L Turbocharged I6
• Core Type: Motorsports-grade bar/plate air-to-water
• Core Rows: 12 (vs. 6 on OEM)
• Sensor Ports: 3x 1/8" NPT (integrated sensor pad)
• Bleed Ports: 2x 1/8" NPT (inlet and outlet water connections)
• Material: CNC machined billet aluminum, 100% TIG welded
• Finish: Raw Billet Aluminum (Machined)
• Installation Kit: 32-piece hardware kit with picture diagrams
• Based On: CSF #8200 Gen 2 B58 Super Manifold (with Gen 1 fitment adjustments)
• Collaboration: CSF x VF Engineering
• UPC: 710353083000

Included Components

• 1x CSF Gen 1 B58 Charge-Air Cooler Manifold (Raw Billet)
• 1x Thermal Rejection Competition Spacer
• 1x Complete Hardware and Installation Kit (32 pieces with picture diagrams and order of operation procedure)

Product Description

The CSF 8300 is the "Super Manifold" charge-air cooler manifold engineered specifically for the Gen 1 BMW B58 3.0L turbocharged inline-6 engine found in F-Chassis models including the 340i, 440i, M240i, 540i, 640i GT, 740i, X3 M40i, and X4 M40i. After tremendous success with the Gen 2 B58 Super Manifold (CSF #8200, 450+ units sold), CSF received countless requests to engineer the same product for the Gen 1 B58 platform. The CSF 8300 features the same advanced design and specifications as the Gen 2 manifold with minor fitment adjustments for the Gen 1 engine, delivering double the intercooler capacity of the OEM core with 12 rows of water cooling (vs. 6 rows on the factory unit) and significantly lower pressure drop for improved airflow and power delivery.

The manifold is precision CNC machined from billet aluminum and 100% TIG welded for strength, replacing the OEM plastic manifold that is limited in its ability to withstand high boost pressures. The intercooler core was designed in SolidWorks using Computational Fluid Dynamics (CFD) software with an integrated air divider in the inlet tank to evenly distribute airflow throughout the core for maximum cooling efficiency. During development, CSF collaborated with R&D partner VF Engineering to conduct over 50 dyno runs on the same car under consistent conditions at approximately 90°F ambient temperature, comparing the CSF manifold to the OEM unit with approximately 25 back-to-back pulls at 30-second intervals to assess heat soak resistance, recovery time, and long-term performance.

The included Thermal Rejection Competition Spacer absorbs and dissipates heat from the cylinder head rather than transferring it to the manifold, providing significant intake air temperature reductions that benefit both motorsport and street applications. An integrated 3-port sensor pad provides 1/8" NPT ports for measuring additional parameters or serving as extra vacuum sources, while individual breather ports on both inlet and outlet water connections simplify system air-bleeding. The oil filter remains easily accessible without manifold removal. The Gen 1 B58 Super Manifold shares its proven core design with the Gen 2 version that has been battle-tested at Pikes Peak, Global Time Attack, and Texas 2K on vehicles pushing over 1,000 wheel horsepower. Whether you are building a 600+ horsepower 340i for the street, preparing an M240i for time attack, or assembling a dedicated race car, the CSF 8300 delivers the cooling capacity, structural strength, and engineering precision that the Gen 1 B58 platform demands at serious power levels.