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COBB

Cobb 08-21 Subaru STI Fuel Pressure Regulator (for Fuel Rail Kit)

$ 380.00
Shipping calculated at checkout.

Short Description

The COBB Fuel Pressure Regulator is designed for use with the COBB Fuel Rail Kit on 2008–2021 Subaru STI models. Built for high-performance fuel systems, it delivers stable, consistent fuel pressure to support upgraded injectors, larger fuel pumps, and ethanol-compatible builds.

Pickup available at SHOP HQ

Usually ready in 5+ days

Delivery and Shipping

Domestic orders typically arrive within 3-7 business days, while international orders may take 7-14 business days. Please note that additional time may be required for items that are drop shipped or back-ordered.

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We strive to offer competitive pricing and will price match qualifying competitors under certain conditions. Learn more here

Description

Maintain precise fuel pressure with the COBB Tuning Fuel Pressure Regulator, engineered specifically for use with the COBB Fuel Rail Kit on 2008–2021 Subaru STI models. Designed for high-performance applications, this regulator delivers consistent fuel pressure across a wide range of operating conditions, making it an essential component for modified engines running larger injectors, upgraded fuel pumps, or ethanol-based fuels.

Whether you're building a street car or a dedicated track machine, maintaining stable fuel pressure is critical for reliable performance and accurate tuning. The COBB Fuel Pressure Regulator integrates seamlessly with the COBB Fuel Rail Kit, providing tuners with the confidence that fuel pressure remains consistent under load.

Constructed from premium materials for long-lasting durability, this regulator is built to handle the demands of high-horsepower Subaru builds while maintaining OEM-quality reliability.

Specifications

Vehicle Fitment: 2008–2021 Subaru STI (For use with COBB Fuel Rail Kit)

Brand: COBB Tuning

Part Number: 315250

Type: Adjustable Fuel Pressure Regulator

Design: High-flow fuel pressure regulator for aftermarket fuel rail systems

Construction: Billet aluminum body with high-quality internal components

Testing: Engineered for stable fuel pressure in high-performance applications

Includes: Fuel pressure regulator, fittings, mounting hardware, and installation components

Warranty: Manufacturer Limited Warranty

Origin: USA

Install Instructions

COBB flex fuel instructions

Cobb Tuning

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