Fuelab Universal CARB Adjustable Fuel Pressure Regulator In-Line Large Seat 1-3 psi 1 -6AN Inlet 1 -6AN Return Black

Fuelab CARB Adjustable Large Seat Fuel Pressure Regulator In-Line Black | Adjustable 1-3 PSI | Fuel Pressure Regulator

Overview

The Fuelab CARB Adjustable Large Seat Fuel Pressure Regulator is a universal in-line regulator designed to provide precise fuel pressure control for a wide range of applications, including Subaru performance builds. This regulator allows fine-tuning of fuel pressure from 1 to 3 psi, ensuring optimal fuel delivery and engine performance. Its large seat design improves flow capacity and durability, making it suitable for high-demand setups where consistent fuel pressure is critical.

Engineered with quality and reliability in mind, this Fuelab regulator features a robust black finish and high-quality construction that stands up to demanding conditions. The in-line configuration with -6AN inlet and return fittings simplifies installation in custom fuel systems or upgrades. Fuelab’s commitment to performance and compliance is evident in this CARB-certified regulator, offering peace of mind for enthusiasts seeking both power and emissions compliance.

For Subaru owners, especially those running modified WRX, STI, or BRZ platforms, maintaining stable fuel pressure is essential for tuning and power gains. This regulator’s adjustable range supports a variety of fuel system setups, from mild bolt-ons to aggressive forced induction builds, helping to optimize fuel delivery and engine response. Its universal fitment and durable design make it a practical upgrade for anyone serious about fuel system performance.

Features & Specifications

This Fuelab CARB Adjustable Large Seat Fuel Pressure Regulator is engineered for universal fitment and features a 1-3 psi adjustable range. Constructed from high-quality materials with a black finish, it delivers precise fuel pressure control for Subaru enthusiasts seeking reliable and tunable fuel system management.

• Brand: Fuelab
• Product: CARB Adjustable Large Seat Fuel Pressure Regulator In-Line Black
• Part Number: 52503-1-L-L
• Fitment: Universal
• Material: Aluminum
• Finish: Black anodized
• Construction: CNC machined
• Origin: Not specified
• Pressure Range: 1-3 psi adjustable
• Inlet Fitting: (1) -6AN
• Return Fitting: (1) -6AN
• CARB Status: Certified

Key Benefits

• Performance: Precise fuel pressure adjustment supports optimal tuning and consistent engine output.
• Durability: Large seat design and CNC machined aluminum construction ensure long-lasting reliability under high flow conditions.
• Fitment: Universal in-line design with standard -6AN fittings simplifies integration into custom or upgraded Subaru fuel systems.
• Quality: Black anodized finish resists corrosion and adds a professional appearance to your engine bay.
• Compliance: CARB certification provides confidence for emissions-conscious builds.
• Adjustability: Fine-tune fuel pressure within a 1-3 psi range to match various fuel pump and injector setups.

What's Included

• 1× Fuelab CARB Adjustable Large Seat Fuel Pressure Regulator In-Line Black

Installation & Compatibility

Installation of the Fuelab adjustable fuel pressure regulator is straightforward for those familiar with fuel system plumbing, requiring standard -6AN fuel lines and fittings. While the universal design fits a wide range of vehicles, including Subaru WRX, STI, and BRZ platforms, professional installation is recommended to ensure proper fuel pressure settings and leak-free connections. No special tools beyond standard AN wrenches are typically needed. Tuning adjustments should be made carefully to match your specific fuel system and engine management setup.

• Professional Installation: Recommended
• Modifications Required: None, but requires compatible -6AN fuel lines
• Verify Compatibility: Confirm fitment for your specific fuel system and vehicle application

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