By Radium Engineering

Radium Fuel Filter Kit - Mazda MX-5 NA/NB 89-05

Regular price $415.00
Regular price Sale price $415.00
Shipping calculated at checkout.
Availability: In stock
SKU: 20-1021
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Regular price $415.00
Regular price Sale price $415.00

This Radium Engineering kit is an OEM fuel filter replacement. Because this filter is larger and less restrictive than the OEM Mazda filter, there is less stress put on the fuel pump. Lower pre filter pressures permit less current draw and thus lower fuel temperatures. This phenomenon permits an increase in fuel flow. NOTE: The filters can withstand alternate fuels such as methanol, ethanol, E85, etc. 

The factory Mazda fuel filter is plumbed between the fuel pump and the fuel rail. It is located just to the inside of the RH rear tire. The NA chassis uses barbed fittings and the NB chassis uses SAE quick connect fittings. Both variations are provided (2 fittings will not be used). A Mazda MX-5 NB1 install is shown below, however, the NA chassis is similar. This is a quick install with no cutting or drilling required. Typical tools is all that is needed.

Kit Includes:

  • Selectable Fuel Filter Elements
  • Anodized Aluminum Filter Housing
  • Anodized Aluminum 2-Piece Clamp
  • Anodized Aluminum Fittings
  • Stainless Steel Hardware

Vehicle Fitment:

  • 1989-97 Mazda MX-5 (NA)
  • 1999-05 Mazda MX-5 (NB)

What clients say


  • Really fast and high quality customer support, my order got to me faster than the quoted time too. No complaints

  • The team took a mostly broken car after some work done elsewhere, and have systematically made it reliable and fast for a fair price. The staff are invested in the work they do which also makes a big difference.

  • Jeff was extremely helpful in assisting me with my exhaust. Always kept me updated and answered any queries in a timely manner. Will definitely be coming back for my future mods

  • Justin and his crew is amazing! Always ready to help and service with a smile. Trusty, friendly and reliable! Had my car sent in for repair twice and it’s fixed on time, at a reasonable price and with no issues. Highly recommended!

  • Easy to deal with and part was ordered quickly

Fitment & Compatibility


How do I know if this part fits my car?

We recommend checking your vehicle's make, model, year, and variant carefully. Most product listings include compatibility notes, but if you're unsure, contact us before purchasing.

Can you confirm fitment before I place my order?

Absolutely. Send us your VIN or Rego and we’ll confirm fitment for you.

Do you offer installation at your workshop?

Yes, we offer installations for most parts at our Ringwood workshop. Contact us to book or get a fitting quote.

Shipping & Handling


How long will it take for my order to arrive?

Most in-stock items ship within 1-2 business days. Delivery time depends on your location and shipping option chosen at checkout.

Do you ship internationally?

Currently, we only ship within Australia. For international enquiries, please contact us directly.

Can I pick up my order in person?

Yes, local pickup is available from our Ringwood workshop. Simply select ‘Local Pickup’ at checkout and we’ll notify you when your order is ready.

Please note: Some items are stored offsite and may need to be transferred from our warehouse, which can add a few business days before pickup is available.

Returns & Warranty


Can I return a product if it doesn’t fit?

Returns are accepted within 14 days if the item is unused and in original packaging. Please see our full Returns Policy for details.


What warranty comes with your products?

All products come with the manufacturer’s warranty. If you experience any issues, contact us and we’ll assist with the claim process.