CSF Top Mount Dual-Pass Charge Air Cooler - F8X M2C/M3/M4

Intercooler Intercooler

Finish *
Package Combo *

Controlling heat and lowering intake air temperatures is very important when tuning the F87 M2 S55, F80 M3, and F82 M4. Higher intake air temp (IAT) means the engine computer has to dial back the boost and ignition timing to prevent detonation and knock. BMW tried to control IAT with a more advanced air-water cooling system. The problem that many tuned M3/M4s experience is the factory intercooler is just too small and extreme heat overruns the system. The low-production M4 GTS received a water injection system to further control IAT with more boost. But a simpler, bolt-on S55 intercooler upgrade is this CSF Dual-Pass design.

The CSF uses a 60% larger core for greater resistance to heat soak. More surface area = cooler overall temps for extended time. The Dual-Pass design gives the intake air more cooling capacity than the original single-pass design. And the CSF is a direct bolt-on replacement to the stock intercooler. All of the original hose connections, chargepipes, and fittings are an OEM-like fit.

The CSF top-mount uses aluminum end tanks that are stronger than the original plastic pieces on the stock cooler. They are also CFD test and cast construction for optimum flow in and out of the core. Multiple finishes are available - subtle wrinkle-black finish or unfinished if you plan on customizing the colors of your engine bay. Other finish options are also available (inquire).

  • World’s 1st cast end tank designed top mount charge-air-cooler
  • 60% increase in core size compared to the OEM cooler
  • Multiple air dividers cast into both the hot/cold side end tanks for optimized air flow
  • CFD analysis and testing completed to ensure optimal performance
  • Left/right, cross-flow, dual-pass core configuration with 2-stage water cooling (vs. OEM single-pass vertical-flow design)
  • Designed with 3D scanning / rapid prototype technology to ensure precise fitment and maximum surface area utilization.
  • “Drop-in fit” design for an easy & quick plug-and-play installation
  • Multiple finish options
  • Lifetime warranty

This part replaces BMW part number 17517846235.

BMW Fitments: 
3 Series
F80 BMW M3 (2015+)
4 Series
F82 / F83 BMW M4 (2015+)

Domestic Shipping Policy

All domestic orders will be shipped to the verified billing address associated with the customer’s credit card. In the event that the products need to be shipped to another address, Kies Motorsports will verify the transaction with the customer by requesting a screenshot of our transaction on the customers online banking. Similar to how PayPal verifies orders, Kies Motorsports has implemented an authorization program that will display a unique code on the credit card transaction next to where the “Kiesmotorsports” name appears.

International Customer Policy

To best serve International Customers, Kies Motorsports only accepts PayPal VERIFIED payments and PayPal VERIFIED addresses on international orders. For international shipping quotes, please email us at info@kiesmotorsports.com

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