Radium 20-0447 Fuel Rail for 1993-1995 Mazda RX-7 13B-REW

Vehicle Fitment

• 1993-1995 Mazda RX-7 (FD3S, 13B-REW rotary engine)

Features

• High-flow top feed secondary fuel rail for 13B-REW rotary engines
• Anodized aluminum construction for strength and fuel compatibility
• Large internal bore supports high fuel flow for boosted setups
• Three 8AN ORB ports for flexible fuel line routing
• Center port for pressure transducers, fuel temp sensors, or pulse dampers
• Phenolic spacers and insulating washers reduce heat transfer
• Stainless steel hardware and M8 mounting pedestals for durability
• Converts OEM side feed to top feed injector setup with compatible injectors

Specifications

• Material: Anodized aluminum
• Port Type: 8AN ORB (three locations)
• Injector Compatibility: Aftermarket top-feed injectors (not included)
• Includes phenolic spacers to prevent thermal transfer
• Mounting: Stainless steel mounts and hardware

Included Components

• 1x Radium Engineering 20-0447 secondary top feed fuel rail
• 2x Phenolic insulating spacers and washers
• 2x 20mm phenolic spacers for OEM manifold
• 2x Stainless steel M8 pedestals
• Stainless mounting hardware

Product Description

The Radium Engineering 20-0447 fuel rail is a performance upgrade designed specifically for the Mazda RX-7 (FD3S) with the 13B-REW rotary engine. Its anodized aluminum construction and large internal bore ensure ample fuel delivery for upgraded injectors in boosted or high-power setups. The design provides reliable, corrosion-resistant performance for street, track, or competition use.

Installation includes phenolic spacers and insulating washers to minimize heat transfer, while multiple 8AN ORB ports allow flexible fuel line routing. The center port accommodates sensors or accessories. This rail converts the stock secondary feed to a top-feed injector system when paired with compatible injectors, making it an essential component for high-flow fuel system upgrades.