Radium Injector Seats, Nissan, 25mm / 30mm

Radium Injector Seats — Nissan 25mm & 30mm

Purpose-built machined aluminium injector seats for converting OEM side-feed to top-feed fuel delivery on Nissan engines. Engineered to the same specifications as Radium Engineering fuel rail kits, these seats press-fit directly into your intake manifold counterbore with zero modification required. The 14mm lower O-ring design pairs with the included FKM seal for consistent, leak-free performance across all fuel system pressures.

Sold individually (singles) — order one seat per cylinder to match your engine configuration.

Kit Highlights

• Sold as singles — order the quantity required for your application (typically 4 or 6 per engine)
• Converts OEM Nissan side-feed injector ports to top-feed configuration
• Same machined aluminium seats used in Radium Engineering fuel rails
• Press-fit into intake manifold counterbore — no modifications required
• Includes FKM O-ring for a sealed, leak-free fit
• Compatible with common 14mm lower injector O-ring
• Available in 25mm (Green anodised) and 30mm (Black anodised) — select your size above
• Engineered and manufactured by Radium Engineering, USA

Available Part Numbers

• 20-0161 — Injector Seat, 25mm, Nissan — Green anodised, sold as single
• 20-0160 — Injector Seat, 30mm, Nissan — Black anodised, sold as single

Why Radium Engineering?

• ✔ Engineered and manufactured in the USA
• ✔ Used by professional motorsport teams worldwide
• ✔ Precision CNC machining from billet aluminium
• ✔ Fully rebuildable and serviceable components
• ✔ Designed for real-world performance and track use

Stocked locally in Australia by Coore. Fast dispatch. Not sure which size suits your injectors or manifold? Contact us before ordering and we'll help you confirm the correct fit.