Radium Engineering Top Feed Fuel Rail Conversion Kit Subaru STi / Legacy GT 04-06, Forester XT 04-05

$284.95

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$299.95

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Fuel Rail Kit: w/ Fittings

Side Feed Injectors

Black Anodized Laser Etched Rails; Billet Injector Seats; Includes 4x -6AN Male Adapters; Radium Recommends Installing Fuel Pulse Damper (20-0176)

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Description

This fuel rail kit converts the OEM side feed fuel injector setup to top feed, allowing the use of high flow fuel injectors (not included). The fuel rail injector bores are 14mm ID. Each rail features a large 15.2mm (0.6'') internal diameter bore to suit even the most fuel hungry engines. They are CNC machined from solid 6061 aluminum, black anodized, and laser engraved for a high quality surface finish. All 3 ports on each fuel rail are tapped with 3/8'' NPT.

The fuel rail kit comes with four -6AN male adapters. This is enough to plumb the rails in ''Parallel, Flow-Through'' or ''Series'', as shown. Refer to the More Details tab above for more information. If -8AN fittings are required, they can be purchased here 14-0185. Also included are four 3/8'' NPT plugs. Two of the plugs can be used if the fuel rails will be plumbed in ''Parallel, Dead End'', as shown. The other two plugs are commonly used for the lower center ports. Optional fuel pulse dampers can be selected and installed in any of the ports on the fuel rails.

Machined phenolic mounting spacers and washers are included to completely isolate the fuel rail from heat transferred from the TGV housings and mounting bolts.

Do I need a pulse damper?
The opening and closing of the injectors creates pressure pulses in the fuel rail, which can lead to unstable fuel pressure. In order to achieve a safe and consistent rail pressure, a pulse damper should be used (especially with high flow injectors). The internal diaphragm will absorb oscillating pulses and help stabilize fuel pressure. This correction can be measured throughout the RPM range and can often help an erratic surging idle. The fuel pulse damper can be used in any of the three 3/8'' NPT ports on the Subaru fuel rails.

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Radium Engineering Top Feed Fuel Rail Conversion Kit
Black Anodized Laser Etched Rails; Billet Injector Seats; Includes 4x -6AN Male Adapters; Radium Recommends Installing Fuel Pulse Damper (20-0176)
Subaru STi / Legacy GT 04-06, Forester XT 04-05
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