{"product_id":"radium-primary-top-feed-conversion-fuel-rail-mazda-cosmo-jc-20b-rew-1","title":"Radium Primary Top Feed Conversion Fuel Rail - Mazda Cosmo JC (20B-REW)","description":"\u003cdiv class=\"jdm-product-content\" style=\"text-align: left;\"\u003e\n\u003ch2\u003eRadium 20B-REW Primary Fuel Rail — Mazda\/Eunos Cosmo JC (20-1120)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cem\u003eNote: This rail replaces the discontinued Radium 20-0464. Radium's new part number for this product is \u003cstrong\u003e20-1120\u003c\/strong\u003e.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Radium Engineering high flow primary fuel rail is for the 20B-REW rotary engine originally found in the 1990-1995 Mazda\/Eunos Cosmo. The aluminium fuel rail is anodised black for compatibility with all popular fuel types including E85. Manufactured with a large internal bore, the fuel rail can support all necessary engine power requirements.\u003c\/p\u003e\n\n\u003cp\u003eThermal insulating spacers and washers are included with stainless steel hardware to prevent thermal energy from conducting heat into the fuel. The included 14mm lower injector seats were designed specifically to be compatible with or without the OEM diffusers in place. They feature FKM O-rings making them suitable for boosted applications.\u003c\/p\u003e\n\n\u003ch3\u003ePorts \u0026amp; Fittings\u003c\/h3\u003e\n\u003cp\u003eThe fuel rail ports are tapped for 8AN ORB, with three ports in total. The extra centre port allows additional fuel system accessories such as the OEM fuel temperature sensor (using Radium 14-0421), a pressure transducer, Radium fuel pulse damper, etc.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e8AN ORB adapter fittings sold separately — appropriate fittings must be selected based on the specific application\u003c\/li\u003e\n  \u003cli\u003eAmple space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers\u003c\/li\u003e\n  \u003cli\u003eUse the dimensional drawings on the relevant product pages as a reference guide to verify clearance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eFuel Injector Requirements\u003c\/h3\u003e\n\u003cp\u003eUniversal fuel injectors with the following dimensions are required when installing this fuel rail. The injectors must have 34mm height with 14mm O-rings (fits 14mm bore): 34.3mm (±1) top-to-bottom O-ring spacing and 42.5mm (±1) overall length, per Radium's dimensional drawing.\u003c\/p\u003e\n\n\u003cp\u003eMany injector manufacturers will have applications with these dimensions. Here are a few examples of applicable injector part numbers from Injector Dynamics:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eInjector Dynamics 1050-XDS — 1050.34.14.14\u003c\/li\u003e\n  \u003cli\u003eInjector Dynamics 1300-XDS — 1300.34.14.14\u003c\/li\u003e\n  \u003cli\u003eInjector Dynamics 1700-XDS — 1700.34.14.14\u003c\/li\u003e\n  \u003cli\u003eInjector Dynamics 2600-XDS — 2600.34.14.14\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eFuel injectors are NOT included and must be purchased elsewhere.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eIncluded\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eAnodised billet aluminium fuel rail\u003c\/li\u003e\n  \u003cli\u003eAnodised billet aluminium injector seats\u003c\/li\u003e\n  \u003cli\u003eThermal spacers\u003c\/li\u003e\n  \u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse: collapse; font-size: 0.95em;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e20-1120 (replaces 20-0464)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eMazda\/Eunos Cosmo JC — 20B-REW (1990-1995)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eConfiguration\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003ePrimary fuel rail, top feed conversion\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003ePorts\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e3 × 8AN ORB\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eConstruction\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eBillet aluminium, large internal bore\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eAnodised black\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eInjector Seats\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e14mm lower seats — compatible with or without OEM diffusers\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd; background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eO-Rings\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eFKM — suitable for boosted applications\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"border-bottom: 1px solid #ddd;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eFuel Compatibility\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eGasoline, E85, and all popular fuel types\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n      \u003ctd style=\"padding: 8px 12px;\"\u003eThermal insulating spacers with stainless steel hardware\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003chr style=\"margin: 20px 0; border: 0; border-top: 1px solid #000;\"\u003e\n\n\u003ch3\u003eWhy Radium Engineering?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e✅ Manufactured in the USA to motorsport-grade tolerances\u003c\/li\u003e\n  \u003cli\u003e✅ CNC-machined billet aluminium components built for performance and longevity\u003c\/li\u003e\n  \u003cli\u003e✅ Real-world high-power build credibility trusted by tuners and race teams worldwide\u003c\/li\u003e\n  \u003cli\u003e✅ Bolt-on design — no cutting, drilling, or fabrication required\u003c\/li\u003e\n  \u003cli\u003e✅ Compatible with E85, pump petrol, methanol, and all popular fuel types\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eFast shipping available throughout Australia. Lead times may vary — contact us for current availability.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp data-jdm-brand-link=\"true\" style=\"text-align: left;\"\u003e\u003ca href=\"\/collections\/radium-engineering\"\u003eBrowse more Radium Engineering parts at JDM Mods NQ\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Radium","offers":[{"title":"Default Title","offer_id":67697795891507,"sku":"20-1120","price":319.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0838\/1471\/1603\/files\/20-1120_1200px_wide.webp?v=1791870578","url":"https:\/\/jdmmodsnq.com\/products\/radium-primary-top-feed-conversion-fuel-rail-mazda-cosmo-jc-20b-rew-1","provider":"JDM Mods NQ","version":"1.0","type":"link"}