RVNG S58 Upgraded Charge Cooler Manifold (G8X)

The BMW S58 engine in the G8X platform is an evolution of BMW’s legendary inline-six lineage — but as power levels rise, the factory charge air cooler manifold becomes one of its biggest weaknesses. The OEM setup uses a crimped plastic plenum mated to a tube-and-fin intercooler core, which struggles to handle even mild increases in boost pressure. Many have seen failures at just a few PSI over stock.

The RVNG RaceWorks Charge Air Cooler Manifold eliminates these limitations entirely. Engineered from cast aluminum with a fully TIG-welded bar-and-plate core, this manifold is built to withstand extreme boost pressures and heat cycles—making it ideal for both high-performance street builds and full track applications. 

Every internal surface was CFD-optimized to ensure balanced flow across all six cylinders, eliminating hot spots and ensuring consistent fueling under load. The result is a system that not only increases cooling efficiency but also enhances throttle response and airflow uniformity—critical for high-horsepower S58 setups. 

Whether paired with stock twins or a full single turbo conversion, the RVNG manifold delivers unmatched reliability, flow, and performance headroom for the S58 platform. 

• Direct fit for 2021+ BMW G80 M3 / G82 M4 (S58)
• Heavy-duty bar-and-plate core TIG-welded to a cast aluminum plenum, rated to handle 60+ PSI of boost
• Includes billet fuel rail, precision-drilled port injection ports
• Nitrous ready with pre-threaded 1/8-NPT and 1/16-NPT ports
• Optimized CFD-designed lower plenum for even air distribution and consistent fueling across all cylinders
• Delivers an average 14% increase in airflow per cylinder compared to OEM
• Maintains low pressure drop while reducing intake air temps to as little as 11°F above ambient
• Features a 33% larger core volume and 24% greater flow area than the factory manifold
• Cast and CNC-machined runners designed to accept OEM O-rings or the included fiber gasket for additional thermal insulation
• Integrated mounting brackets, EVAP fittings, and engine cover provisions for an effortless OEM-like installation
• Oil filter access port built into the plenum—no removal required during maintenance
• Two additional 1/8-NPT ports for boost reference, sensor integration, or custom applications
• Also compatible with X3M / X4M S58 platforms with included EVAP adapter
• Backed by RVNG RaceWorks Limited Lifetime Warranty