BMW G Series 30i/40i & A90 GR Supra CSF Performance Radiator / Heat Exchanger w/ Rock Guard

CSF Performance Radiator / Heat Exchanger Upgrade with Rock Guard for BMW G Series 30i/40i & A90 GR Supra

CSF High Performance Engine Water Cooling All-Aluminium Radiator upgrade, ideal for use in high horsepower builds on street or track to lower coolant temperatures.

One of the most apparent problems for the 2nd gen B58 Motor is the liquid-cooled charge air cooler system quickly heat soaks with no ability to recover. This would cause the intake air temperatures (IATs) to spike, resulting in the ECU cutting the power output of the vehicle, and eventually putting the car into limp mode. CSF engineers witnessed the overheating issue first-hand as they were in attendance at the Global Time Attack Finals at Buttonwillow Raceway in November 2019. Several new heavily modified Supra racecars could barely go two or three laps in moderate ambient conditions without having the car go into limp mode, forcing drivers to take a cool down lap (or two), with some even coming into the pits to have their front mount heat exchangers sprayed down with cold water.

CSF's B58 high-performance heat exchanger will be a critical component to keeping your Supra/BMW's charge air cool, and out of limp mode. The upgraded heat exchanger is especially important when upgrading turbos and/or running performance tuning software. The original 2nd Gen B58 heat exchanger is a 1-row unit that is 25mm thick. In comparison, CSF has used its industry-exclusive world's largest 2-row core (68mm) with CSF's B-Tube technology. A unique tank design allows the larger CSF core to still fit into the OEM cooling system housing. The CSF improved design, includes billet transmission cooler mounts, and metal rock guard with improved airflow characteristics. CSF is the only company to include a rock guard and incorporate OEM transmission cooler mounting points for a true plug-and-play "drop-in" fit.

Direct Replacement, Plug and Play

Reduces Intake Air Temps

Aluminium TIG Welded

Tested and Proven on Track

CNC Machined Mounting Brackets and OEM Style "Quick Connect" Inlet/Outlet

Includes Rock Guard an Transmission Oil Cooler Mounting Kit

Series / Chassis

G20 / G21 / G28 / G29

Models

320i / 320Li / 325i / 325Li / 325LiX / 330e / 330i / 330iX / 330LiX / M340i / M340iX / Z4

Engines

B46D / B48 / B48D / B48X / B58C / B58D

This item will fit Vehicles with the following Engine Codes:

G20 B46D 320i Saloon
G20 B46D 330i Saloon
G20 B46D 330iX Saloon
G20 B48 320i 1.6 Saloon
G20 B48D 320i Saloon
G20 B48D 325i Saloon
G20 B48D 330i Saloon
G20 B48D 330iX Saloon
G20 B48X 330e Saloon
G20 B58D M340i Saloon
G20 B58D M340iX Saloon
G21 B48D 330i Touring
G21 B48D 330iX Touring
G21 B58D M340iX Touring
G28 B48D 320Li Saloon
G28 B48D 325Li Saloon
G28 B48D 325LiX Saloon
G28 B48D 330LiX Saloon
G29 B46D Z4 20i Roadster
G29 B46D Z4 30i Roadster
G29 B48D Z4 20i Roadster
G29 B48D Z4 30i Roadster
G29 B58C Z4 M40i Roadster
G29 B58D Z4 M40i Roadster

Replaces Genuine BMW Part Number:

17 11 8 666 811 - 17118666811 - 8 666 811 - 8666811