• COBB Fuel Pressure Regulator Manifold Relocation Kit | Subaru WRX STI (08-21) (315150)
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COBB Fuel Pressure Regulator Manifold Relocation Kit | Subaru WRX STI (08-21) (315150)

COBB Fuel Pressure Regulator Manifold Relocation Kit | Subaru WRX STI (08-21) (315150)

315150

In stock

$25.00 USD
$25.00 USD $25.00 USD
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The COBB Fuel Pressure Regulator Manifold Relocation Kit is a precision-engineered upgrade designed for 2008–2021 Subaru WRX STI models. This kit enhances fuel system performance by relocating the fuel pressure regulator’s manifold reference line from the #4 cylinder runner to a plenum-based source. By doing so, it significantly reduces manifold pulsations that can cause inconsistent fuel pressure. The result is a more stable fuel delivery under varying boost and vacuum conditions, which improves overall engine responsiveness and reliability. The kit includes all necessary components for the relocation, ensuring a high-quality, durable solution that maintains OEM standards while optimizing fuel pressure stability.

This kit is specifically designed for Subaru WRX STI models from 2008 through 2021, making it a direct-fit upgrade for these vehicles. Installation involves relocating the fuel pressure regulator manifold reference line, which is a bolt-on modification requiring no major alterations to the fuel system. Ideal for street and track use, this kit supports enhanced engine performance under demanding conditions. It is compatible with stock and modified fuel systems, providing a reliable upgrade for enthusiasts seeking improved fuel pressure consistency and engine efficiency. The included components facilitate straightforward installation and ensure proper fitment without compatibility issues.

Overview

COBB Fuel Pressure Regulator Manifold Relocation Kit

Fitment: 2008-2021 Subaru WRX STI

Part #: 315150

Overview

The COBB Fuel Pressure Regulator Manifold Relocation Kit is engineered to optimize the fuel system of your 2008-2021 Subaru WRX STI. This specialized kit relocates the fuel pressure regulator’s manifold reference line from the #4 cylinder runner to a plenum-based source, significantly reducing unwanted manifold pulsations. By stabilizing fuel pressure, it helps maintain consistent fuel delivery under varying boost and vacuum conditions, supporting smoother engine operation and improved drivability.

Ideal for enthusiasts seeking enhanced fuel system reliability and more precise fuel pressure control, this kit is a practical upgrade for those focused on maximizing engine performance and responsiveness in their STI.

Key Features

This kit offers a targeted solution to fuel pressure inconsistencies with the following key features:

  • Relocates the fuel pressure regulator manifold reference line to a plenum-based source for improved stability
  • Reduces manifold pulsations that can cause fuel pressure fluctuations
  • Supports consistent fuel pressure under both boost and vacuum conditions
  • Includes all necessary components for the relocation installation
  • Designed specifically for 2008-2021 Subaru WRX STI models

Installation & Fitment

The kit is designed for direct fitment on 2008-2021 Subaru WRX STI vehicles. Installation involves relocating the fuel pressure regulator’s manifold reference line, which requires moderate mechanical skill and attention to detail. Fitment should be verified against your vehicle’s specifications and the part number to ensure compatibility.

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