Koyo Radiator

Koyo Radiator
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    5 out of 55 out of 55 out of 55 out of 55 out of 5 3 reviews


     in stock
    Shipping Locations
    Michigan: 2 Available

    Will It Fit Your Vehicle?


    Koyo Radiators are designed, manufactured and specified to original equipment (OE) specifications. Koyo radiators are renowned for their OE style design made especially for import cars. Koyos radiators are also available in plastic tank and aluminum core. Our NocolokR brazing line keeps the highest quality standards, bringing you superior products you can rely on. Koyo is Japans largest aftermarket radiator manufacturer. The Koyo radiator is produced from aircraft quality aluminum and Heli-arc welded. Heli-arc soldering is the highest quality standard for enforcement along aluminum connections.

    You need to use a Koyo radiator cap with this radiator.


    • Koyo Radiators are fully polished to a mirror finish
    • Koyo Radiators provide 20% to 30% more cooling than standard radiators
    • Handles high revving, high performance motors
    • Koyo Radiators are perfect for Turbo Charged, Super Charged & Nitros Oxide equipped engines
    • Made from aircraft quality aluminum and Heli-arc welded, cores are NOCOLOK-brazed
    • Koyo Radiator is on the cutting edge of technology and design with Japan's largest automobile manufacture
    • Custom built OEM fit - All Koyo radiator cores and tanks are specifically designed and built for each application. No universal fit parts are used.
    • This ensures proper fit, just like your original equipment! Koyo builds radiators to fit today's most popular import performance cars.


    Vehicle Fitment

    Honda Civic
    2002 Honda Civic Si Hatchback
    2003 Honda Civic Si Hatchback
    2004 Honda Civic Si Hatchback
    2005 Honda Civic Si Hatchback

    3 reviews for Koyo Radiator

    5 out of 55 out of 55 out of 55 out of 55 out of 5

    5.0 out of 5.0

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    5 out of 55 out of 55 out of 55 out of 55 out of 5

    8/24/2015 by lc

    Good Rad

    Quality, lower temp, no plastic. Almost 2x thick from stock.

    5 out of 55 out of 55 out of 55 out of 55 out of 5

    9/4/2014 by Blake Beard

    Nice fit

    The koyo radiator fit great! Great quality and great finish too. I had a mishimoto on my rx8, and I will choose koyo every time from now on. The koyo fit like OEM. Make sure to get an aftermarket radiator cap because the OEM cap won't fit.

    5 out of 55 out of 55 out of 55 out of 55 out of 5

    11/7/2011 by Chris AKA BoogieMain

    Great Quality

    Great looking and functioning product. I was really shocked by the quality of this product, which made for a very easy install. I would recommend this to anyone looking to upgrade their cooling system.