Auxiliary Engine Radiator Upgrade, CSF - G8X M2/M3/M4

All-aluminum aux radiator for G87 M2, G80 M3, G82 M4 with more capacity.

All-aluminum tube-and-fin auxiliary radiator upgrade for either the left or right side of G8X (sold individually). This is a modular aux radiator that works with either the Left (engine cooling) or Right (intake charge air cooler) systems. This is a direct replacement for the stock aux radiator, installing with the original hardware and hoses. The CSF G8X aux radiator has more rows and more tubes in its core than the stock original, increasing surface area and volume.

The left and right side coolers serve different circuits on the S58. The left (driver) adds additional capacity for the engine cooling circuit. The right (passenger) adds capacity for the intake charge air cooler (in the intake manifold). Either one can be used on its own as a replacement or upgrade. CSF also has an upgraded radiator for the main charge air cooler (#8215, see Related Items below).

More features -

• 10% increase in tank volume
• 2-row 42mm thick core
• More cooling tubes = more surface area
• CSF B-tube technology
• OEM plug-and-play upgrade with original hoses
• fits Left (engine cooling) or Right (charge air cooler)
• includes rock guard

Replaces BMW part number 17118095285.

This one part number can be used on either side.