
Radium Engineering Top Feed Conversion Fuel Rail for Mazda 26B Primary
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Description
Radium Top Feed Conversion Fuel Rail, Mazda 26B Primary
Application: Mazda 26B 4-rotor – primary injectors
Part Type: Top feed conversion primary fuel rail
Part Number: 20-1126
The Radium Engineering 20-1126 is a high-flow primary fuel rail for the Mazda 26B 4-rotor engine. Thermal insulating spacers and washers are supplied with stainless steel hardware to stop heat from the engine conducting into the fuel.
The included 14mm lower injector seats were designed to work with or without the OEM diffusers in place, and their FKM O-rings make them suitable for boosted applications. The green injector seats extend the O-ring past the air-assist injector holes in the iron. The rail has four 8AN ORB ports – the extra centre ports allow accessories such as the OEM fuel temperature sensor (using 14-0421), a pressure transducer or a Radium fuel pulse damper.
Key Features
- Top Feed Conversion: High-flow primary rail for universal 34mm, 14mm O-ring top feed injectors
- Thermal Isolation: Insulating spacers and washers with stainless steel hardware
- Injector Seats: 14mm lower seats work with or without the OEM diffusers
- Boost Ready: FKM O-rings on the injector seats suit boosted applications
- Air-Assist Sealing: Green seats extend the O-ring past the air-assist injector holes in the iron
- 4 Ports: Four 8AN ORB ports, including centre ports for sensors, transducers or dampers
What's Included
- Anodised billet aluminium fuel rail
- Anodised billet aluminium injector seats
- Thermal spacers
- Mounting hardware
Optional Parts
- Radium 14-0421 8AN ORB to M12x1.5mm Female Fitting – fits the OEM fuel temperature sensor into one of the centre 8AN ORB ports
- Radium Fuel Pressure Gauge 0-100psi (20-0029) – 0-100psi gauge Radium offers for monitoring rail pressure
Important Notes
- Fuel injectors are NOT included – universal injectors with a 34mm height and 14mm O-rings are required
- Injector Dynamics examples: 1050-XDS, 1300-XDS, 1700-XDS and 2600-XDS (34mm, 14mm O-ring versions)
- Fittings are sold separately
- Fittings must be selected to suit the application – allow ample clearance around the ports for regulators, gauges and pulse dampers
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Mazda 26B 4-rotor engine – primary injectors
If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.
Installation
We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.
Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.

