Radium Engineering Fuel Filter Kit – 1989–2005 Mazda MX-5

Radium Engineering developed the Fuel Filter Kit for 1989–2005 Mazda MX-5 around the needs of modified street and competition cars, where component compatibility and clean system layout matter as much as outright capacity.

Why This Upgrade Matters

High-flow injectors and pumps still depend on clean fuel. A performance filter must balance contaminant capture with sufficient flow area and serviceability so the upgraded fuel system is protected without creating an unnecessary restriction.

Product-Specific Details

Fuel filter installation kit for 1989-2005 Mazda MX5 Miata. Replaces factory fuel filter and mount with Radium Engineering fuel filter. Plug and play installation. E85 compatible.

Fitment & Application

Application: 1989–2005 Mazda MX-5
Fitment style: Application-Specific

Choose Your Configuration

• Filter Media: 6 Micron Microglass — RAD20-1021-05: Fine disposable filtration for strong downstream injector protection.
• Filter Media: 10 Micron Stainless Steel — RAD20-1021-03: Reusable stainless media for a service-and-inspect maintenance strategy.

Technical Notes

Radium commonly offers fine microglass and reusable stainless-element options. Microglass prioritizes fine filtration and is replaced at service intervals; stainless media is serviceable and well suited to builds where regular inspection is part of the maintenance routine.

Radium Part Numbers

• RAD20-1021-05
• RAD20-1021-03

Enthusiast Notes

On ethanol-fueled and track-driven cars, make filter inspection part of the maintenance schedule. A serviceable filter also gives you an early look at contamination before it reaches expensive injectors.

Before Ordering

Confirm the selected filter media/micron rating, fuel type, line size and whether the filter will be used pre-pump or post-pump as intended for the system.