Performance Radiator for Mazda MX-5 Miata (1990-1997)

High-Capacity Performance Radiator for 1990-1997 Mazda MX-5 Miata

Replaces the restrictive and age-prone OEM plastic-tank radiator to drastically lower coolant temperatures during high-rpm driving and track use.

The Stock MX-5 Miata Cooling Shortcoming

The factory NA Miata radiators are infamous for their plastic upper and lower end tanks, which become brittle and develop hairline cracks after decades of thermal cycling. The OEM single-row core lacks the necessary fluid volume and surface area to shed heat efficiently when the B6-ZE or BP-ZE engine is pushed under sustained high-load conditions. This inadequate thermal mass leads to rapid heat soak, causing coolant temperatures to spike during spirited canyon runs or autocross events, directly threatening head gasket integrity and robbing the engine of consistent power.

The Engineering Solution

This cooling upgrade eliminates fragile plastic components entirely by utilizing a precision TIG-welded, all-aluminum construction. Featuring a massive 3-row tube design with a 12.60" x 25.12" core, this radiator significantly increases overall fluid capacity and maximizes the heat dissipation surface area. The dense fin structure optimizes airflow dynamics through the front grille, extracting heat out of the coolant block much faster than the factory unit. Sized with 1.25-inch inlet and outlet ports for a direct bolt-in fitment, it maintains proper flow velocity while completely mitigating the risk of end-tank failure. An included high-pressure radiator cap raises the coolant boiling point, ensuring your Miata maintains optimal operating temperatures.

Technical Specifications

Compatibility

• 1990-1997 Mazda MX-5 Miata 1.6L L4 MANUAL (MT) only
• 1990-1997 Mazda MX-5 Miata 1.8L L4 MANUAL (MT) only
• Note: NOT FOR AUTOMATIC TRANSMISSION

The Mazda Track Standard

Built to handle the demanding nature of JDM chassis setups, this radiator ensures consistent thermal stability, letting you push your lightweight sports car to the absolute limit without temperature-induced power loss.