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Ignitions and Electrical› Computers, Chips, Modules and Programmers

Cobb

Flex Fuel Fuel Rail Kit

$654.50 $595.00 Save $59.50

SKU: COBB343250

In Stock
In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Cobb Tuning Fuel Rail Line Kit provides essential fuel supply and return lines for high-flow fuel rail installations on the EJ257 engine platform. This kit is an ideal component for those undertaking significant fuel system upgrades, whether for high-horsepower builds or flex-fuel conversions. It comes complete with all the necessary fittings and hardware, simplifying the installation process. The black finish offers a clean aesthetic under the hood. Key specifications include a -6AN fitting diameter and the inclusion of all necessary installation hardware.

MIA's Description

It is intended for use when upgrading or rebuilding the fuel rail system for high-power or flex fuel applications. This kit is specifically designed for the 2008-2021 Subaru WRX STI with the EJ257 engine.

Fitment

Fitment Guaranteed

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on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandCobb
Part NumberCOBB343250
CategoryAir and Fuel

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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