Radium Fuel Rail Kit - Toyota 3S-GTE Gen 1 / 2 / 3

Suits:

• Toyota 3S-GTE — 1st Generation
• Toyota 3S-GTE — 2nd Generation
• Toyota 3S-GTE — 3rd Generation

The Radium Engineering Fuel Rail Kit for the Toyota 3S-GTE is CNC-machined from billet aluminium with a large 0.7" internal bore to support all necessary engine power requirements. Fuel rail ports are tapped for 8AN ORB. Compatible with all fuel types including E85.

Note on port accessories: Ample clearance around the fuel rail port(s) is required for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. Refer to Radium Engineering dimensional drawings to verify clearance before ordering accessories.

Injector Compatibility by Generation

1st Generation 3S-GTE:

Compatible with OEM top-feed fuel injectors or OEM-equivalent injectors. No modifications required. Injectors must match OEM height and O-ring dimensions.

2nd & 3rd Generation 3S-GTE:

These engines use side-feed injectors which are not compatible with the Radium fuel rail. The included Radium injector seats must be installed into the cylinder head injector ports. Aftermarket injectors must be 48mm tall with 11mm upper O-rings and 14mm lower O-rings.

The following injectors have been verified compatible (others may also work):

• Injector Dynamics ID1050-XDS — 1050.48.11.14
• Injector Dynamics ID1300-XDS — 1300.48.11.14
• Injector Dynamics ID1700-XDS — 1700.48.11.14
• Injector Dynamics ID2600-XDS — 2600.48.11.14

Features

• Large 0.7" internal bore — supports all power levels
• 8AN ORB fuel rail ports
• Anodised surface finish for wear and corrosion resistance
• Injector seats compatible with high-flow aftermarket injectors (Gen 2/3)
• Reuses thermal insulating spacers
• Lightweight aluminium construction
• Stainless steel hardware
• No special tools required for installation

Kit Includes

• Anodised billet aluminium fuel rail
• Anodised billet aluminium mount feed
• Anodised aluminium injector seats
• Stainless steel mounting hardware

Part Number:

• 20-0849 — Radium Fuel Rail Kit (Toyota 3S-GTE Gen 1 / 2 / 3)

Why Radium Engineering?

• ✅ Manufactured in the USA to motorsport-grade tolerances
• ✅ CNC-machined billet aluminium components built for performance and longevity
• ✅ Trusted by high-power build tuners and race teams worldwide
• ✅ Bolt-on fitment — no cutting, drilling, or fabrication required
• ✅ Compatible with E85, pump petrol, and flex fuel sensor integration