Air and Fuel› Fuel Injection Systems and Components - Electronic

Cobb

1050cc Top Feed Fuel Injectors

$625.00

SKU: COBB312150

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 COBB312150 is a set of 1050cc top-feed fuel injectors designed to provide enhanced fuel delivery for compatible Subaru engines. They feature a flow rate of 1065cc/min at 3.0 Bar (43.5 psi) when using gasoline and are suitable for all fuel types, including E85. The top-feed design and included PNP injector harness clips ensure a straightforward integration with compatible Subaru fuel systems.

MIA's Description

The COBB Tuning Top Feed 1050X Fuel Injectors are a set of four injectors designed for 2007-2021 Subaru WRX STI models with EJ257 engines and top-feed fuel rails. These injectors offer a 1050cc/min flow capacity, providing significant headroom above factory specifications.

Each injector is characterized with precise flow rate and spray pattern data, which is essential for ProTuner calibration using Cobb's Accesstuner software. This allows for accurate and safe engine tuning, crucial for preventing lean conditions at high power outputs by reducing injector duty cycle.

Fitment

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Specifications

BrandCobb
Part NumberCOBB312150
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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