Cobb 08-19 Subaru STI Fuel Pressure Regulator (for Fuel Rail Kit)

Part Details:

The COBB Fuel Pressure Regulator to Fuel Rail Kit is designed to provide a clean and reliable connection between an aftermarket fuel pressure regulator and the fuel rail in Subaru fuel system setups. This kit helps simplify fuel system plumbing when upgrading or reconfiguring fuel delivery components.

By providing the necessary fittings and connections, this kit allows fuel pressure regulators to be integrated properly into the fuel system without custom fabrication. It is commonly used in vehicles running upgraded fuel pumps, injectors, or return-style fuel systems.

Purpose & Application

Fuel pressure regulator to rail kits are used to route fuel from the regulator back to the fuel rail while maintaining consistent fuel pressure across the system. This is an important part of ensuring stable fueling, particularly in performance-oriented or modified fuel systems.

This kit is typically paired with aftermarket fuel pressure regulators and upgraded fuel rails as part of a complete fuel delivery solution.

Key Features

• Designed to connect a fuel pressure regulator to the fuel rail
• Supports clean and organized fuel system plumbing
• Ideal for use with upgraded or return-style fuel systems
• Helps ensure consistent fuel pressure delivery
• Compatible with performance-oriented fuel system setups

Recommended Supporting Fuel Components

• Fuel Pumps – ensure adequate fuel supply and stable pressure when upgrading the fuel system.
• Fuel Injectors – commonly upgraded alongside regulators to support increased fuel flow and power goals.
• Fuel Rails – help maintain balanced fuel distribution across injectors in higher-flow setups.
• Fuel Delivery Components – explore complete fuel system upgrades designed to work together.

Learn more about COBB Tuning performance solutions and supporting components