Radium Engineering 20-1021-03 Fuel Filter Kit for 1989-05 Mazda MX-5/Miata

Vehicle Fitment

• 1989-97 Mazda MX-5 (NA, 1.6L/1.8L I4, RWD)
• 1999-05 Mazda MX-5 (NB, 1.8L I4, RWD)

Features

• Anodised aluminium filter housing provides superior durability over OEM plastic units.
• Includes a stainless steel 10-micron filter element, increasing reliability and filtration precision.
• Compatible with alternative fuels such as E85 or methanol when paired with appropriate plumbing.
• No cutting or drilling required - direct bolt-in using factory mounting location and supplied fittings.
• Provides lower pre-filter pressure, reducing load on the fuel pump and improving longevity.
• Includes both barbed and SAE quick-connect adapters to suit NA and NB chassis fuel line terminations.
• Designed for both daily driving and high-performance builds, offering improved flow and cleanliness.
• Allows easier filter service and inspection via detachable housing design.

Specifications

• Filter rating: 10 micron stainless steel element.
• Housing material: Billet-style anodised aluminium body and two-piece clamp assembly.
• Fittings included: Barbed and quick-connect adapters to suit 1989-05 MX-5 fuel line connections.
• Installation: Direct replacement of factory fuel filter/mount - no modifications required.

Included Components

• 1x Radium 20-1021-03 filter housing assembly.
• 1x Stainless steel 10-micron filter element.
• 1x Anodised aluminium two-piece clamp and mounting hardware.
• Barbed-adapter and SAE quick-connect fittings set.

Product Description

The Radium Engineering 20-1021-03 Fuel Filter Kit is purpose-built for the Mazda MX-5 (Miata) from 1989 through 2005 (NA and NB generations). By replacing the factory plastic filter and mount with a high-quality aluminium housing and a high-precision 10-micron stainless filter element, the kit offers superior fuel cleanliness, lower pressure drop and increased reliability - especially beneficial for tuned or high-flow systems.

Installation is straightforward - the kit fits into the existing filter location without any modifications. With versatile fitting options included, it supports both early and later MX-5 fuel line styles. Ideal for performance enthusiasts or daily drivers alike, this filter kit enhances fuel system durability, flow, and enables upgrades to alternative fuels or higher output setups while maintaining OEM fitment and appearance.