Koyo Aluminum Radiator — 1999-2005 Mazda MiataSKU:
Koyo aluminum racing radiators are designed to be direct factory replacement units. Koyo racing radiator features a much thicker core with a more efficient fin design that helps with flow and temperature drop over the surface. Koyo is Japan's largest aftermarket radiator manufacturer, utilizing the latest aircraft quality aluminum and Heli-arc welded. Heli-arc soldering is the highest quality standard for enforcement along aluminum connections. The Koyo radiator is roughly 20mm thicker then stock, allowing for larger capacity, better flow, and faster heat loss over the surface of the core. Koyo has also tapped the top of the radiator for a 1/8th NPT fitting, allowing for installation of a water temp sensor. It comes fitted with a plug which can be removed for the sensor to be installed.
Designed for applications where engine configuration/size cause clearances issues for thicker core radiators. In this case, the 36mm V-Core Series will suit your needs. Intended for both circuit and daily use. All Koyorad V-Series All Aluminum Radiators are Nocolok brazed, designed as a factory fit, direct bolt in with no engine modifications necessary, and retain mounts for the stock fan shrouds and fans.
All Koyo Racing series radiators have "OE Specification" mounting location for stock mounting without major modifications; however we recommend using aftermarket electric fans for the best results. Koyo Hyper Radiator Caps are also available to increase your cooling system pressure to 1.3 bar for increased cooling capacity. Racing series radiators were made for manual transmission only, however with a separate automatic transmission cooler; one can use the Koyo Racing Radiator with automatics for increased cooling capacity.
OE Mounting Specifications
Tube and Fin Alignment
Koyo Mirror Finish
Core End Tank Material: Aluminum
Overall Depth, Width, Length: OEM Size
Manufacturer Warranty: Initial Start UP
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This radiator is only for cars with manual transmissions. It will not work on the automatic cars.
Upper radiator hose may require trimming for proper clearance.
Product photo is generic and not entirely representative of the item you will receive.
It is the installer's responsibility to check all thermostat plugs, NPT plugs, line fittings, and other connections to assure they are fully tightened before operating the vehicle. Koyo recommends that you check all connections at regular intervals, especially during the first few miles after installation.