CSF 7047 Radiator Left side only for PORSCHE Boxster (987)/Cayman/911 (997)/911 GT3 (997)CSF has over 5 decades of experience manufacturing radiators. So when it comes to keeping your engine cool and your Porsche (997) 911 987 Boxster Cayman running at its best, a CSF High Performance All Aluminum Radiator is the obvious choice. Designed to perform on the street or at the track, a performance radiator is a must have for both high horsepower builds as well as race vehicles which need added cooling performance in motorsports environments.