Koyo is a Japanese company established July of 1956 as Ejiri Radiator in Nagoya, Japan (Aichi Prefecture) as a radiator repair shop. Twelve years later in 1968, Ejiri Radiator established a radiator and oil cooler factory in Nagoya. We then separated our production facilities from our repair facilities and began manufacturing radiators. Two years later in 1970, Ejiri Radiator was renamed to Koyo Radiator Manufacturing and began expanding to branches all over Japan. Koyorad quickly developed into an industry leading Aftermarket Radiator Supplier worldwide.
Koyo is committed to manufacturing radiators with the best in quality and meeting or exceeding OE standards. Koyo radiators do not require any drilling, cutting, or relocating, yet we highly recommend leaving this installation up to a professional mechanic. If you need help locating one in your area, one of Koyo’s extensive list of distributors will be happy to refer one to you. Feel free to contact us if you have any questions.
Recommended Antifreeze Coolant
High quality antifreeze and coolant protects your engine by lowering water’s freezing point and raising water’s boiling point. Antifreeze and coolant provides anti-corrosion properties for the metals in your radiator and cooling passages within your vehicles engine. It also provides proper lubrication for the engine water pump.
It is important that the proper coolant is used for your Koyo OE Aftermarket Replacement Radiator. We highly recommend the use of coolant grade listed in every vehicles owner’s manual.
When a new Koyo OE Aftermarket Replacement radiator is installed, we require a complete cooling system flush and fill with new coolant mixed 50/50 with distilled, de-ionized or de-mineralized water. Neglecting a full cooling system flush or using the wrong coolant may result in corrosion, leaks, and premature wear and tear, not to mention other stresses on your engines cooling system.