OVERVIEW

CSF's Race-Spec cooler for the E-Chassis BMW replaces the factory oil/transmission cooler with a far more capable unit built on CSF's AC condenser technology. Where the OEM cooler uses a ten-tube core, CSF packs in eleven super-high-pressure micro-tubes and wraps them in a high-density multi-louvered fin, producing roughly 20% more surface area contact than the factory part. In CSF's own lab testing the result is approximately 30% more heat rejection than the OEM cooler.

The cooler is a true drop-in. It accepts every attaching OEM component — oil-line connections, mounting brackets and the factory shroud and ducting — so no lines need to be modified or re-routed. CSF markets this as the world's first genuinely plug-and-play transmission cooler for the E9X M3 platform; on manual-transmission cars the same unit serves as an upgraded engine oil cooler.

SPECS

Built with CSF's AC condenser technology: 1-row, super-high-pressure, 22mm-wide 11-channel microtube
Dual-pass high-performance core with 11 cooling tubes versus the OEM 10-tube design
High-density multi-louvered fin design with approximately 20% more surface area contact than the OEM unit
Lab tested at approximately 30% more efficient than the OEM cooler
Drop-in fit requiring no modifications; accepts all attaching OEM components including oil-line connections, mounting brackets and shroud/ducting
Dual purpose: transmission oil cooler on DCT cars, engine oil cooler on 6-speed manual cars
Replaces OEM part number 17227521376
CSF 2-year warranty, under normal use and service, to the original purchaser of the vehicle in which the product was originally installed

PARTS INCLUDED

One (1) CSF #8042 race-spec dual-pass oil / transmission cooler
Complete kit as supplied by CSF Radiators; CSF does not publish a bill of materials for this part — see the instructions packed in the box for the full contents.

TECH RESOURCES

Additional Parts Required

None. CSF Radiators specifies no additional hardware for this part — it is a direct-fit replacement that reuses the OEM lines, brackets and ducting.
Installer-supplied: a drain pan and fresh fluid to replace what is lost when the cooler and lines are opened.

Installation

CSF does not publish a downloadable installation PDF for this part. Printed installation instructions are packed in the box with the cooler.
Installation is a direct swap of the factory cooler using OEM mounting points and quick-connect oil lines; no cutting, drilling or line modification is required.
Need help before or during the install? Contact Speed Logic and we will walk you through it.

Notes

Years and models above follow CSF's current published fitment for #8042. CSF's catalog title for this part also covers the E8X 135i, and CSF's US table does not separately list the E93 convertible — the E93 rows are carried over from Speed Logic's original CSF fitment data. Confirm your exact chassis, engine and transmission with Speed Logic before ordering.

PART NUMBER

CSF #8042

VEHICLE APPLICATIONS

Make	Model	Chassis	Engine	Years
BMW	335i	E90	N54 / N55 3.0L Turbo I6	2007–2011
BMW	335i xDrive	E90	N54 / N55 3.0L Turbo I6	2009–2011
BMW	335xi	E90	N54 3.0L Twin-Turbo I6	2007–2008
BMW	M3	E90	S65 4.0L V8	2008–2012
BMW	335i	E92	N54 / N55 3.0L Turbo I6	2012–2013
BMW	335i xDrive	E92	N54 / N55 3.0L Turbo I6	2012–2013
BMW	335is	E92	N54 3.0L Twin-Turbo I6	2011–2013
BMW	M3	E92	S65 4.0L V8	2013
BMW	X1 xDrive35i	E84	N55 3.0L Turbo I6	2013–2015