Fuelab Universal CARB Adjustable Fuel Pressure Regulator 4-12 psi (2) -6AN Inlets (1) -6AN Return Black

Fuelab CARB Adjustable Fuel Pressure Regulator 4-12 psi -6AN Inlets Black | Precise Fuel Pressure Control | Universal Fuel System Component

Overview

The Fuelab CARB Adjustable Fuel Pressure Regulator is a versatile and precise solution designed to manage fuel pressure in a variety of fuel systems. Compatible with gasoline, diesel, methanol, and ethanol fuels, this regulator supports a pressure range of 4 to 12 psi, making it ideal for carbureted setups and other applications requiring fine fuel pressure control. Its universal fitment ensures it can be integrated into many Subaru platforms or custom fuel systems with ease.

Crafted from billet aluminum and finished with a durable anodized coating that meets military MIL-A-8625, Type II standards, this regulator combines robust construction with precise engineering. The fine thread pitch adjustment allows for accurate tuning of fuel pressure, while the inclusion of multiple -6AN inlet and return ports provides flexibility for various plumbing configurations. Fuelab’s attention to detail and quality control make this regulator a reliable choice for enthusiasts seeking consistent fuel delivery.

For Subaru owners and performance enthusiasts, maintaining stable fuel pressure is critical for engine reliability and optimal tuning. This regulator’s adjustable range and compatibility with multiple fuel types support a wide range of modifications and fuel system upgrades. Whether upgrading a WRX, STI, or other Subaru model, this regulator helps ensure smooth engine operation and maximizes the potential of your fuel system setup.

Features & Specifications

This Fuelab CARB Adjustable Fuel Pressure Regulator is engineered for universal fitment and features a 4-12 psi adjustable range. Constructed from billet aluminum with a black anodized finish, it delivers precise fuel pressure control for Subaru enthusiasts seeking reliable and tunable fuel system performance.

• Brand: Fuelab
• Product: CARB Adjustable Fuel Pressure Regulator 4-12 psi -6AN Inlets Black
• Part Number: 51504-1
• Fitment: Universal
• Material: Billet Aluminum
• Finish: Black Anodized (MIL-A-8625, Type II)
• Construction: CNC Machined
• Origin: Not specified
• Fuel Compatibility: Gasoline, Diesel, Methanol, Ethanol
• Pressure Range: 4-12 psi (PSID)
• Inlet Ports: Two -6AN
• Return Port: One -6AN
• Gauge Port: 1/8 inch NPT with plug
• Pressure Reference Port: 1/8 inch NPT with barbed fitting
• Mounting: Versatile bracket with stainless steel hardware included
• Warranty: Limited Lifetime

Key Benefits

• Precision Control: Fine thread pitch adjustment allows accurate fuel pressure tuning for optimal engine performance.
• Fuel Compatibility: Works with multiple fuel types including gasoline, diesel, methanol, and ethanol, supporting diverse Subaru builds.
• Durability: Billet aluminum construction with military-grade anodizing ensures long-lasting corrosion resistance and strength.
• Flexible Installation: Multiple -6AN inlet and return ports plus a versatile mounting bracket accommodate various fuel system layouts.
• Monitoring Ready: Includes gauge and pressure reference ports for easy integration of external fuel pressure gauges.
• Universal Fitment: Designed to fit a wide range of vehicles and custom fuel systems, ideal for Subaru enthusiasts upgrading or maintaining their fuel delivery.

What's Included

• 1× Fuelab CARB Adjustable Fuel Pressure Regulator 4-12 psi -6AN Inlets Black
• Versatile mounting bracket
• Stainless steel mounting hardware
• Gauge port plug
• Installation instructions

Installation & Compatibility

Installation of the Fuelab CARB Adjustable Fuel Pressure Regulator is straightforward for those familiar with fuel system plumbing and basic mechanical skills. The regulator mounts using the included bracket and hardware, and the multiple -6AN ports allow flexible hose routing. A 1/8 inch NPT gauge port facilitates easy connection of an external fuel pressure gauge for monitoring. No special tools beyond standard hand tools and fuel line wrenches are typically required. While the regulator is universal, verifying compatibility with your specific Subaru model and fuel system setup is recommended to ensure proper fitment and function.

• Professional Installation: Recommended for those unfamiliar with fuel system components
• Modifications Required: None, but verify hose and fitting sizes
• Verify Compatibility: Confirm fitment for your specific year and fuel system configuration

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