M5/M8 F9X High Performance Charge Air Cooler Set

The CSF Twin Charge-Air-Cooler Set is a direct-fit upgrade for the BMW F9X S63TU4 platform, engineered to control heat soak and keep Intake Air Temperatures (IATs) stable under higher boost and repeated pulls. CSF used CFD analysis, testing, and 3D scanning to maximize core size within the factory location, delivering a significantly larger liquid-to-air system with OEM-level fitment and sealing.

Fitment

• BMW M5 F90

• BMW M8 F91 / F92 / F93

• Sold as: complete left/right charge-air cooler set + installation hardware

Core & Design

• Type: Air-to-water (liquid-to-air)

• Core increase: 100% larger core volume per cooler vs. OEM

• Core material: Aluminum

• Core dimensions (each): 190mm (L) × 168mm (W) × 100mm (T)

• Construction highlights:

  • 1-piece seamless inlet end tanks

  • Integrated charge pipes for maximum strength

  • OEM-style quick-connect water connections

  • Factory-style sensor ports

Performance Notes

• Designed to reduce IATs and improve consistency during high-load use

• CSF notes an improvement of about 0.3 seconds in 60–130 mph testing

Extra Features

• Integrated E85 / methanol injection provision: dual 1/8" NPT ports per cooler

• Finish: crinkle black (tanks) with raw aluminum core

• Install: true drop-in fit (no modifications required)