Fitment Information Honda Civic 06-11 (All Trims) Including Civic Si Coupe or Sedan Specs & Features All aluminum performance radiator Direct fit for manual transmissions Automatic transmission requires separate oil cooler for fitment (not included) Product Description Megan Racing radiators are an ideal upgrade to the factory radiator.  Great as a direct factory replacement for a leaking OEM radiator, or an performance aftermarket upgrade. Each radiator is designed to be a cost efficient upgrade that helps in keeping cooling temperatures down during normal every day daily driving as well as autocross, drag, drifting and other performance driving.  Up to a 20 degree drop in operating temperature can be seen by using the Megan Racing radiator. Megan Racing Radiators feature: High Performance Aluminum Radiator Dual Row Notes: Highly recommended to ensure the cooling system is properly flushed when replacing the radiator to prevent air pockets.