CSF Top-Mount Dual-Pass Charge-Air Cooler – BMW M3 / M4 / M2 Competition (F8x, S55)

OVERVIEW

This is the world’s first cast end tank top mount charge-air-cooler designed for the BMW S55 engine in the F80 M3, F82/F83 M4 and F87 M2 Competition. Multiple air dividers are cast into both the hot and cold side end tanks to optimize air flow through CSF’s custom-designed liquid-to-air intercooler core, with CFD analysis and testing carried out to confirm the result.

The core itself is 60% larger than the OEM cooler and runs a left/right, cross-flow, dual-pass configuration with two-stage water cooling for maximum efficiency and intake temperature reduction — a significant change from the OEM single-pass, vertical-flow design. CSF used 3D scanning and rapid prototype technology to guarantee precise fitment and maximum surface area utilization.

Installation is genuinely plug-and-play: the unit is a drop-in fit complete with OEM-style quick-connect water connections and sensor ports. It is available in a professional crinkle black powder-coated finish (CSF #8082) or raw aluminum (CSF #8082R) if you want to have it custom powder-coated.

SPECS

• World’s first cast end tank top mount charge-air-cooler for the BMW S55 engine
• Multiple air dividers cast into both hot and cold side end tanks for optimized air flow (validated by CFD analysis and testing)
• 60% increase in core size compared to the OEM cooler
• Left/right, cross-flow, dual-pass core configuration with 2-stage water cooling, versus the OEM single-pass vertical-flow design
• Custom-designed CSF liquid-to-air intercooler core
• Designed with 3D scanning and rapid prototype technology for precise fitment and maximum surface area utilization
• “Drop-in fit” design with OEM-style “quick-connect” water connections and sensor ports
• Finish options: professional crinkle black powder coat (#8082) or raw aluminum ready for custom powder-coating (#8082R)
• Replaces BMW OEM part number 17517846235
• Limited lifetime warranty to the original purchaser under normal use and service

PARTS INCLUDED

• Complete charge-air-cooler assembly as supplied by CSF Radiators, with cast end tanks, OEM-style quick-connect water connections and sensor ports; see the installation instructions supplied in the box for the full bill of materials.

TECH RESOURCES

Additional Parts Required

• None. CSF Radiators specifies no additional hardware for this part — it is a drop-in replacement that accepts the OEM water connections and sensors.
• Service items you supply: fresh charge cooler coolant to refill and bleed the low-temperature circuit after installation.

Installation

• CSF does not publish a downloadable installation PDF for this part. Printed installation instructions are supplied in the box with the cooler.
• Professional installation is recommended. Contact Speed Logic if you need help confirming fitment or sourcing OEM service parts before you start.

Notes

• Model years above follow CSF’s official fitment for #8082 / #8082R.
• CSF lists the F87 M2 Competition (2019–2021) only; the M2 CS is not on CSF’s published fitment for this part. Contact Speed Logic before ordering for an M2 CS.

PART NUMBER

• 8082 — crinkle black powder-coated finish
• 8082R — raw aluminum finish

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