By Radium Engineering

Radium Fuel Surge Tank Install Kit (FST Not Incl) - Honda S2000 AP1 99-04

Regular price $646.99
Regular price Sale price $646.99
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Availability: In stock
SKU: 20-0094
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Regular price $646.99
Regular price Sale price $646.99
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Radium Fuel Surge Tank Install Kit — Honda S2000 AP1 1999-2004

This comprehensive installation kit includes everything needed to install a Radium Fuel Surge Tank with a single 39mm fuel pump in a 1999-2004 Honda S2000 AP1. The FST surge tank is sold separately — this kit is not designed to work with the Radium MPFST.

All Radium FSTs are CNC-machined from aluminium, fully anodized, and use PTFE-insulated wiring and submersible hose to ensure full alcohol compliance (E85, ethanol, methanol). The kit locates the FST in a hidden, collision-safe area of the trunk behind the left seat using factory threaded bosses — no modifications or drilling required. 100% of trunk space remains usable.

The powder-coated aluminium bracket mounts to existing OEM holes and features three rubber isolation points to reduce fuel pump noise and vibration. Wiring components include flying leads with Raychem solderless butt splices and a weatherproof fuse and relay — no soldering required, assembly takes under 30 minutes.

Four pre-assembled -6AN PTFE hoses are included, fully compatible with high-alcohol fuels including E85, ethanol, and methanol. PTFE is non-permeable, eliminating fuel vapour smell, with anodized aluminium hose ends and an inner stainless steel braid covered in black PVC for abrasion and debris protection.

Suits: Honda S2000 AP1 (1999-2004)

Kit Includes:

  • Pre-assembled 3/8" (-6AN) PTFE hoses
  • Powder-coated aluminium mounting bracket with vibration isolators
  • AN and OEM-style adapter fittings
  • Stainless steel hardware
  • Wiring components with relay and fuse (no soldering required)

Note: Fuel Surge Tank (FST) is not included. Not compatible with the Radium MPFST.

Available Part Numbers:

  • 20-0094 — FST Install Kit, Honda S2000 AP1 1999-2004

Why Radium Engineering?

  • ✅ Manufactured in the USA to motorsport-grade tolerances
  • ✅ CNC-machined billet aluminium components for precision fit and long-term durability
  • ✅ Trusted by tuners and race teams running high-power S2000 builds worldwide
  • ✅ Bolt-on fitment using factory threaded bosses — no cutting, drilling, or fabrication required
  • ✅ PTFE hoses and alcohol-compliant construction fully compatible with E85, ethanol, and methanol

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.