Mishimoto Charge Air Cooler Manifold, BMW G8x M2/M3/M4 2021+

Expert's advice:

The stock G80 M3 charge air cooler is... fine. The combination intercooler/intake manifold design is efficient, but it's let down by the tube-and-fin core crimped onto the thermoplastic plenum. Those crimps are quickly becoming a notorious weak point, with many failing at as little as 3 lbs. of boost over stock. The solution is Mishimoto's cast aluminum and TIG-welded manifold with a robust bar-and-plate core, designed to withstand boost pressures over 60 PSI without breaking a sweat.

Reliability aside, the Mishimoto charge air cooler's performance possibilities are nearly endless. The core is 33 percent larger than stock, and the manifold flows an average of 14 percent better to each cylinder. That, combined with the increased cooling capacity of the bar-and-plate core, results in reduced pressure drop and intake air temps as low as 11 degrees above ambient under heavy load. The CFD-designed lower plenum also features an internal diverter to ensure the entire core is utilized and each cylinder receives even flow for safe and optimal fueling. The cast and CNC-machined runners feature O-ring grooves to accept factory seals, and we've included a fiber gasket that insulates the runners from engine heat for those seeking every degree of cooling.

Insane power levels require equally insane amounts of fuel, so we've added provisions for port fuel injection, including a billet fuel rail and anodized aluminum injector blanks to cap the injector ports when not in use. Our precision-machined injector ports feature optimized geometry for the perfect mixing of air and fuel, with no drilling required. The included PTFE -AN fuel lines and fittings are suitable for ethanol and tee into the stock fuel lines. Additionally, six nitrous ports accept 1/8 or 1/16-NPT nozzles and can be capped off when not in use.

If cooling, flow, and reliability weren't enough, Mishimoto also designed the charge air cooler to fit like stock. This kit includes brackets to keep your wiring tidy, a mount to fit the stock engine cover, and custom EVAP lines for a seamless installation. A convenient cutout in the plenum allows for easy access to the oil filter, without affecting flow. 

Key Features

• Direct fit for 2021+ G8X BMW M2/M3/M4
• Bar-and-plate core TIG welded to cast-aluminum manifold withstands over 60 PSI of boost
• Includes billet fuel rail, lines, and precision-drilled ports for port injection*
• Nitrous ready with easily accessible 1/8-NPT or 1/16-NPT nozzle adapters and caps
• Includes PTFE -AN fuel lines that tee into stock fuel lines
• Robust bar-and-plate core for IATs as low as 11 degrees above ambient
• Improves flow to each cylinder by an average of 14 percent
• Improves cooling without increasing pressure drop over stock
• 33-percent core volume increase over stock with a 24-percent greater flow area
• CFD-designed lower plenum for even flow distribution and safe fueling
• Includes harness brackets, engine cover mount, and custom EVAP lines for seamless install
• Includes two additional 1/8-NPT ports for manifold reference lines or sensors
• Plenum cutout allows easy access to oil filter without impeding flow
• Also fits X3 M/X4 M models with included EVAP plug and fitting
• Mishimoto Lifetime Warranty

Mark Hendrikx - Automotive engineer at Mosselman