Radium Engineering Top Feed Fuel Rail Kit - Nissan Silvia S13 SR20DET (20-0558)

Upgrade your S13 SR20DET's fuel system with the Radium Engineering top feed fuel rail kit. CNC machined from billet aluminum, featuring 8AN inlet/outlet ports and converting the SR20DET to top feed injectors, this precision fuel rail is an essential upgrade for high-power S13 builds running larger injectors.

Key Features:

• CNC machined billet aluminum construction
• Converts SR20DET to top feed injectors
• 8AN inlet and outlet ports
• Direct fitment for S13 SR20DET
• High-flow design
• Precision machined injector bosses
• Anodized finish
• Radium Engineering quality and engineering

Performance Benefits:

• Top Feed Conversion: Enables use of high-flow top feed injectors
• High Flow: 8AN ports support high fuel volume demands
• Consistent Pressure: Rigid billet construction maintains fuel pressure across all injectors
• Precision Fitment: CNC machined for exact injector and mounting alignment
• Upgrade Path: Enables larger injector fitment for high-power builds
• Quality Construction: Billet aluminum for strength and corrosion resistance

Specifications:

• Brand: Radium Engineering
• Part Number: 20-0558
• Product: Top Feed Fuel Rail Kit
• Material: CNC machined billet aluminum
• Injector Style: Top feed
• Port Size: 8AN (inlet and outlet)
• Finish: Anodized
• Barcode: 20-0558

Fitment Information:

• Nissan Silvia S13 (SR20DET)
• Engine: SR20DET
• Note: Verify your engine configuration before ordering
• Note: Injectors sold separately - verify injector compatibility
• Installation: Professional installation recommended

What's Included:

• Radium Engineering billet aluminum fuel rail
• Mounting hardware
• Installation instructions
• Note: Top feed injectors, fuel lines, and fittings sold separately

Installation Notes:

• Professional installation recommended
• Remove factory fuel rail and injectors
• Install top feed injectors into Radium fuel rail
• Mount fuel rail to intake manifold using included hardware
• Connect 8AN fuel lines to inlet and outlet ports
• Connect injector wiring harness
• Pressure test fuel system before starting engine
• Check for fuel leaks before driving

Top Feed Injector Conversion - Why It Matters:

The factory SR20DET uses side feed injectors, which are a limiting factor for high-power builds. Side feed injectors are available in limited flow ratings and are not as widely supported as top feed injectors in the aftermarket. Converting to top feed injectors opens up a much wider selection of high-flow injectors from manufacturers like Injector Dynamics, Bosch, and Deatschwerks. Top feed injectors are also generally more consistent in their flow characteristics and are better supported by tuning software. For any serious SR20DET build targeting significant power, the top feed conversion is a fundamental upgrade.

CNC Machined Billet Aluminum:

The fuel rail is CNC machined from billet aluminum, ensuring precise dimensions and consistent quality. CNC machining produces tighter tolerances than casting, ensuring the injector bosses are perfectly aligned and the fuel rail mounts correctly to the intake manifold. The billet construction provides excellent strength and rigidity, maintaining consistent fuel pressure across all injector positions. The anodized finish protects the aluminum from corrosion and fuel degradation, ensuring long service life.

8AN Ports:

The 8AN inlet and outlet ports provide ample flow capacity for high-power SR20DET builds. 8AN fittings are a standard size in performance fuel systems, making it easy to source compatible fuel lines, fittings, and fuel pressure regulators. The 8AN size is appropriate for the fuel flow demands of most SR20DET builds, from mild street builds to high-power turbo applications. Using AN fittings throughout the fuel system provides leak-free connections that are easy to assemble and disassemble for servicing.

Consistent Fuel Pressure Across All Injectors:

The rigid billet aluminum construction and optimized internal flow path ensure consistent fuel pressure at all four injector positions. Inconsistent fuel pressure between injectors can cause cylinder-to-cylinder fuel delivery variations, resulting in an uneven tune and potential lean conditions in some cylinders. The Radium fuel rail's design minimizes pressure drop across the rail, ensuring each injector receives the same fuel pressure for consistent, accurate fuel delivery.

Compatible Injectors:

The Radium top feed fuel rail is compatible with standard top feed injectors in the appropriate size for your power goals. Popular choices for SR20DET builds include Injector Dynamics ID1050x, ID1300x, Deatschwerks DW1000, and similar high-flow top feed injectors. Consult your tuner to determine the appropriate injector size for your target power level and fuel type (gasoline or E85). Injectors are sold separately.

Why Radium Engineering?

Radium Engineering is a highly respected manufacturer of precision fuel system components, known for innovative engineering and meticulous attention to detail. Their fuel rails are trusted by professional engine builders and serious enthusiasts worldwide for their quality construction, precise fitment, and reliable performance. Radium's deep understanding of performance fuel system requirements ensures their components are engineered to perform flawlessly in demanding applications.

Installation Tips:

• Use quality AN fittings and fuel-rated hose throughout
• Pressure test to at least 1.5x operating pressure before starting engine
• Check all connections for leaks after first heat cycle
• Consult your tuner for injector sizing recommendations
• Ensure fuel pump and lines can support your injector flow requirements

Perfect For:

• Nissan Silvia S13 SR20DET high-power builds
• S13 builds converting from side feed to top feed injectors
• SR20DET builds requiring larger injectors than side feed options allow
• E85 S13 builds needing high-flow injector capability
• Anyone seeking precision Radium Engineering fuel system components

Perfect For: Nissan Silvia S13 SR20DET builds seeking Radium Engineering top feed fuel rail for high-flow injector conversion and precision fuel delivery.

Pro Tip: Consult your tuner before selecting injector size - they can recommend the correct flow rate for your power target and fuel type to ensure optimal tune quality.

Top Feed Conversion: CNC billet aluminum. 8AN ports. Converts SR20DET from side feed to top feed. Injectors sold separately. Professional installation recommended.

Upgrade your S13 SR20DET fuel system with Radium Engineering top feed fuel rail - CNC billet, 8AN ports, precision fitment, proven quality.