CSF High-Performance Auxiliary Radiator – BMW M240i / M340i / M440i / Z4 (G-Chassis)

OVERVIEW

Engine heat is the enemy when you push a B58-powered BMW hard. CSF has been building radiators for more than five decades, and this high-performance auxiliary radiator replaces the small OEM side-mounted unit with a far more capable 2-row, 42mm ultra high-performance core using CSF’s exclusive B-Tube technology and an ultra-efficient multi-louvered fin.

Construction is 100% aluminum and TIG-welded throughout, with CNC-machined mounting brackets and OEM-style “quick connect” inlet and outlet fittings so the radiator drops straight in with no modifications. CSF also includes a detachable aluminum rock guard — an industry exclusive — to keep debris out of the core and reduce the risk of impact damage and leaks.

The radiator is sold individually and fits both the left and right side of the vehicle, so you can add one or replace the pair. It is finished in a thermal black protective coating and has been tested and proven by CSF’s global network of R&D partners, including leading time attack teams, tuners and turbo kit manufacturers.

SPECS

• 2-row, 42mm ultra high-performance core with CSF’s exclusive B-Tube technology
• CSF “Track-Spec” 5mm tall ultra-efficient multi-louvered fin for maximum surface area contact and heat dissipation
• 100% all-aluminum TIG-welded construction
• CNC-machined mounting brackets with OEM-style “quick connect” inlet/outlet
• Includes a detachable aluminum rock guard (industry exclusive)
• Finished in a thermal black protective coating
• Sold individually — fits both the left and right side of the vehicle
• Drop-in fit requiring no modifications to install
• Replaces BMW OEM 17118672237
• 2-year limited warranty

PARTS INCLUDED

• One (1) CSF high-performance auxiliary radiator
• Detachable aluminum rock guard
• CNC-machined mounting brackets and OEM-style quick-connect inlet/outlet fittings
• Complete kit as supplied by CSF Radiators; 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 for the OEM auxiliary radiator.
• Service items you supply: fresh coolant to refill and bleed the system after the swap.
• Most applications use two auxiliary radiators. This listing covers one radiator — order two if you are replacing both sides.

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

• CSF does not list the G20 320i or 330i for this radiator. Confirm fitment for your specific vehicle with Speed Logic before ordering.
• Toyota GR Supra? See CSF High-Performance Auxiliary Radiator – Toyota GR Supra (A90/A91).

PART NUMBER

• 8179

VEHICLE APPLICATIONS