Mishimoto Water Cooler for 2012–2015 Honda Civic Si

The Mishimoto high-performance aluminum water radiator is the ideal upgrade for the stock Civic radiator. For a cooler, more efficient engine, all Mishimoto radiators are designed and manufactured to maximize cooling, improve engine performance, and, most importantly, prevent your car from overheating.

With a radiator core volume 63% greater than that of the stock radiator, this model offers increased surface area and thermal capacity, helping to maintain a stable cooling fluid temperature during back-to-back runs, spirited road trips, and weekend track days—situations in which the stock radiator begins to show its limitations.

Like all Mishimoto radiators, this high-capacity aluminum radiator is equipped with a 1.3 bar pressure radiator cap and is backed by Mishimoto’s unmatched lifetime warranty.

*Compatible with the Honda Civic Si (2012–2015)