Radium Engineering Fuel Filter Kit – 89–05 Mazda MX-5

This Radium Engineering fuel filter kit is a high-performance OEM replacement for Mazda MX-5 models. It installs in the factory filter location and is designed to reduce restriction, lower fuel temperatures, and increase pump efficiency—making it an ideal upgrade for both stock and modified vehicles.

Vehicle Compatibility:

• 1989–1997 Mazda MX-5 Miata (NA)

• 1999–2005 Mazda MX-5 Miata (NB)

Overview:
The Radium filter replaces the restrictive factory unit located inside the RH rear wheel well. By lowering pre-filter pressure, this upgrade helps reduce current draw from the fuel pump, resulting in cooler fuel temps and increased flow. The anodized billet housing is compatible with all fuel types including ethanol and methanol blends such as E85. Both NA (barbed) and NB (SAE quick connect) fittings are included—only two will be used depending on your application.

Installation requires no cutting or drilling, and the kit mounts using existing factory hardware.

Key Features:

• Supports ethanol, methanol, and E85 fuels

• Reduces stress on fuel pump

• Enhances fuel flow and efficiency

• Bolt-on installation with standard tools

• Available with multiple filter element options