CSF Dual-Pass Power Steering Cooler – BMW 128i / 328i / M3 (E8x / E9x)

OVERVIEW

CSF's power steering cooler was the world's first true plug-and-play unit for the E9X M3 platform. It abandons the factory's low-efficiency mechanically bonded core for a CAB-brazed, high-efficiency plate-type design built with CSF's AC condenser technology, and lab tests around 40% more efficient than the OEM cooler.

The dual-pass, 6-row core carries 83% more surface area than stock. CSF added that size at the top of the cooler rather than the bottom, so an aftermarket supercharger, heat exchanger or auxiliary cooler can still live underneath the factory power steering cooler position. It accepts every OEM attaching component — oil-line connections, mounting brackets and the AC condenser — and installs with no modifications.

SPECS

• CAB-brazed high-efficiency plate-type core replacing the OEM mechanically bonded design
• Built with CSF's AC condenser technology using a 1-row super-high-pressure 18mm wide 4-channel microtube
• Dual-pass 6-row design with an 83% increase in surface area compared to the OEM unit
• Lab tested at approximately 40% more efficient than the OEM cooler
• Total height increase of 83mm (3.27"), added at the top of the cooler to leave room underneath for a supercharger, heat exchanger or auxiliary cooler
• Drop-in fit requiring no modifications — accepts all attaching OEM components including oil-line connections, mounting brackets and the AC condenser
• All-aluminum construction
• Replaces OEM part number 17117522119
• 2-year warranty to the original purchaser under normal use

PARTS INCLUDED

• CSF all-aluminum dual-pass power steering cooler
• Complete kit as supplied by CSF Radiators; see the installation instructions 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 fit that reuses the OEM oil lines, brackets and AC condenser.

Installation

• CSF does not publish a downloadable installation PDF for this part. Printed installation instructions ship in the box.

Notes

• Fitment follows CSF's official application list for part 8041. CSF lists the 3 Series cars as "E9X" without breaking out body styles — confirm your exact chassis and engine with Speed Logic before ordering.

PART NUMBER

• 8041

VEHICLE APPLICATIONS