{"product_id":"radium-engineering-nissan-silvia-sr20det-fuel-rail-kit-s13","title":"Radium Engineering Top Feed Fuel Rail Kit - Nissan Silvia S13 SR20DET (20-0558)","description":"\u003ch3\u003eRadium Engineering Top Feed Fuel Rail Kit - Nissan Silvia S13 SR20DET (20-0558)\u003c\/h3\u003e\n\u003cp\u003eUpgrade 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.\u003c\/p\u003e\n\u003ch4\u003eKey Features:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCNC machined billet aluminum construction\u003c\/li\u003e\n\u003cli\u003eConverts SR20DET to top feed injectors\u003c\/li\u003e\n\u003cli\u003e8AN inlet and outlet ports\u003c\/li\u003e\n\u003cli\u003eDirect fitment for S13 SR20DET\u003c\/li\u003e\n\u003cli\u003eHigh-flow design\u003c\/li\u003e\n\u003cli\u003ePrecision machined injector bosses\u003c\/li\u003e\n\u003cli\u003eAnodized finish\u003c\/li\u003e\n\u003cli\u003eRadium Engineering quality and engineering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePerformance Benefits:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop Feed Conversion:\u003c\/strong\u003e Enables use of high-flow top feed injectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Flow:\u003c\/strong\u003e 8AN ports support high fuel volume demands\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Pressure:\u003c\/strong\u003e Rigid billet construction maintains fuel pressure across all injectors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fitment:\u003c\/strong\u003e CNC machined for exact injector and mounting alignment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpgrade Path:\u003c\/strong\u003e Enables larger injector fitment for high-power builds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuality Construction:\u003c\/strong\u003e Billet aluminum for strength and corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eSpecifications:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Radium Engineering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 20-0558\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Top Feed Fuel Rail Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e CNC machined billet aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInjector Style:\u003c\/strong\u003e Top feed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePort Size:\u003c\/strong\u003e 8AN (inlet and outlet)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarcode:\u003c\/strong\u003e 20-0558\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFitment Information:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eNissan Silvia S13 (SR20DET)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e SR20DET\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Verify your engine configuration before ordering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Injectors sold separately - verify injector compatibility\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Professional installation recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat's Included:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRadium Engineering billet aluminum fuel rail\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Top feed injectors, fuel lines, and fittings sold separately\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInstallation Notes:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eProfessional installation recommended\u003c\/li\u003e\n\u003cli\u003eRemove factory fuel rail and injectors\u003c\/li\u003e\n\u003cli\u003eInstall top feed injectors into Radium fuel rail\u003c\/li\u003e\n\u003cli\u003eMount fuel rail to intake manifold using included hardware\u003c\/li\u003e\n\u003cli\u003eConnect 8AN fuel lines to inlet and outlet ports\u003c\/li\u003e\n\u003cli\u003eConnect injector wiring harness\u003c\/li\u003e\n\u003cli\u003ePressure test fuel system before starting engine\u003c\/li\u003e\n\u003cli\u003eCheck for fuel leaks before driving\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTop Feed Injector Conversion - Why It Matters:\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003eCNC Machined Billet Aluminum:\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003e8AN Ports:\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003eConsistent Fuel Pressure Across All Injectors:\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003eCompatible Injectors:\u003c\/h4\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch4\u003eWhy Radium Engineering?\u003c\/h4\u003e\n\u003cp\u003eRadium 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.\u003c\/p\u003e\n\u003ch4\u003eInstallation Tips:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eUse quality AN fittings and fuel-rated hose throughout\u003c\/li\u003e\n\u003cli\u003ePressure test to at least 1.5x operating pressure before starting engine\u003c\/li\u003e\n\u003cli\u003eCheck all connections for leaks after first heat cycle\u003c\/li\u003e\n\u003cli\u003eConsult your tuner for injector sizing recommendations\u003c\/li\u003e\n\u003cli\u003eEnsure fuel pump and lines can support your injector flow requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePerfect For:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNissan Silvia S13 SR20DET high-power builds\u003c\/li\u003e\n\u003cli\u003eS13 builds converting from side feed to top feed injectors\u003c\/li\u003e\n\u003cli\u003eSR20DET builds requiring larger injectors than side feed options allow\u003c\/li\u003e\n\u003cli\u003eE85 S13 builds needing high-flow injector capability\u003c\/li\u003e\n\u003cli\u003eAnyone seeking precision Radium Engineering fuel system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePerfect For:\u003c\/strong\u003e Nissan Silvia S13 SR20DET builds seeking Radium Engineering top feed fuel rail for high-flow injector conversion and precision fuel delivery.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePro Tip:\u003c\/strong\u003e 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTop Feed Conversion:\u003c\/strong\u003e CNC billet aluminum. 8AN ports. Converts SR20DET from side feed to top feed. Injectors sold separately. Professional installation recommended.\u003c\/p\u003e\n\u003cp\u003eUpgrade your S13 SR20DET fuel system with Radium Engineering top feed fuel rail - CNC billet, 8AN ports, precision fitment, proven quality.\u003c\/p\u003e","brand":"Radium Engineering","offers":[{"title":"Default Title","offer_id":46834711691431,"sku":"RAD20-0558","price":305.83,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/8344\/1063\/files\/ecaf4698ef4dfe807edd3eec8338486eL.jpg?v=1749584975","url":"https:\/\/www.straightsiximports.com\/products\/radium-engineering-nissan-silvia-sr20det-fuel-rail-kit-s13","provider":"Straight Six Imports","version":"1.0","type":"link"}