Review on Mishimoto Performance Aluminum Radiator for Honda Civic Si 2001-2005 (MMRAD-CIV-02SI) by Dre Bhatt

Put one of these in my SI when the factory unit gave up 14 years/170k miles later (lame factory junk ;) ). Works well, fits fairly well, but I had to open up some holes in the fan covers to get them to fit properly. No other issues, keeps temperature where it should be in all operating conditions.