***Product Update October 2019 Production*** CSF’s pursuit of cooling perfection continues with improvements to The Ultimate BMW B58 High Performance Heat Exchanger. As of October 2019, CSF has released a new and improved “Version 2.0” of the BMW B58 Heat Exchanger. Improvements include the following three (3) key updates:

Upgraded Inlet/Outlet Design with New Tapered Entry and Exit Points from End Tanks, Resulting in Optimized Water Flow and Increased Performance (Matches OEM Spec)*
After Extensive Wind-Tunnel, Dynamometer (Rolling-Road Test), and Field Testing, CSF Engineers Have Improved the Core Spec from Version 1’s 68mm 2-Row Core with 8mm Fin Height to Version 2’s Ultra-Efficient 42mm 2-Row Core, with CSF’s B-Tube Technology, and 6.5mm Multi-Louvered Fin Height*
- Increase of 15% More Cooling Tubes Used in the Core vs. V1 Design for Better Surface Area Contact and Heat Dissipation
- Results in Optimized Airflow Through the Heat Exchanger Core and Into Other Cooling System Components for Maximum Performance of the Entire Cooling System (Especially Critical if Installed in an X-Drive Model with Transmission Oil Cooler Placed in Front of Heat Exchanger)
- CSF V2 Design: 2-Row 42mm Core vs. OEM Design: 1-Row 26mm Core. ~62% Increase in Core Fluid Capacity
Now Includes Hardware Mounting Kit* for Applications That Have a Factory Transmission Oil Cooler Mounted in Front of the Heat Exchanger (X-Drive Models)
OEM #: 17118625431

Vehicle Applications:

Year	Model	Sub-Model	Chassis Code	Engine Code
15-18	120i	5 doors	F20	B48
15-18	125i	5 doors	F20	B48
15-18	M140i(X)	5 doors	F20	B58
16-18	218i	Coupe	F22	B38
15-18	220i	Coupe	F22	B48
15-18	230i(X)	Coupe	F22	B48/B46
15-18	M240i(X)	Coupe	F22	B58
16-18	218i	Convertible	F23	B38
15-18	220i	Convertible	F23	B48
15-18	230i(X)	Converitble	F23	B48/B46
15-18	M240i(X)	Converitble	F23	B58
14-18	320i(X)	Sedan	F30	B48
14-18	330e	Sedan	F30	B48
14-18	330i(X)	Sedan	F30	B48
14-18	340i(X)	Sedan	F30	B48
14-18	320i(X)	Touring	F31	B48
14-18	330i(X)	Touring	F31	B48/B46
14-18	340i(X)	Touring	F31	B58
15-18	320i(X)	Gran Tourismo	F34 GT	B48
15-18	330i(X)	Gran Tourismo	F34 GT	B48/B46
15-18	340i(X)	Gran Tourismo	F34 GT	B58
15-18	420i(X)	Coupe	F32	B48
15-18	430i(X)	Coupe	F32	B48/B46
15-18	440i(X)	Coupe	F32	B58
15-18	420i(X)	Convertible	F33	B48
15-18	430i(X)	Convertible	F33	B48/B46
15-18	440i(X)	Convertible	F33	B58
15-18	420i(X)	Gran Coupe	F36 Gran Coupe	B48
15-18	430i(X)	Gran Coupe	F36 Gran Coupe	B48/B46
15-18	440i(X)	Gran Coupe	F36 Gran Coupe	B58