WH Billet Adjustable Bypass Fuel Pressure Regulator Kit SKU: 6662

WH Billet Adjustable Bypass Fuel Pressure Regulator Kit | 4-65 PSI

Dial in your fuel system with the WILD HORSES Billet Adjustable Bypass Fuel Pressure Regulator Kit. Designed for throttle-body injection, EFI conversions, high-pressure EFI systems, and custom fuel setups, this bypass-style regulator provides precise fuel pressure control from 4-65 PSI using the included spring options.

Machined from 6061-T6 billet aluminum, this regulator is built for strength, durability, and clean installation. The low-pressure spring works well for many throttle-body injection systems, while the included high-pressure spring supports EFI systems that demand higher fuel pressure. Whether you're upgrading your Bronco fuel system, building a custom setup, or fine-tuning fuel delivery, this kit helps maintain steady pressure for reliable performance.

• Adjustable 4-65 PSI Range – Supports many throttle-body injection systems and higher-pressure EFI applications

• Bypass-Style Regulator – Helps maintain consistent fuel pressure while returning excess fuel to the tank

• Two Spring Ranges Included – Factory-installed spring adjusts 4-15 PSI; secondary spring adjusts 16-65 PSI

• 6061-T6 Billet Aluminum Construction – Strong, durable, and built for long-term performance

• Great for EFI Conversions – Ideal when upgrading or modifying your Bronco fuel system

• Supports High-Pressure EFI Systems – Included secondary spring provides the pressure range needed for many EFI setups

• Works with Custom Fuel Systems – A versatile solution for modified engines, upgraded pumps, and return-style fuel systems

• Complete Kit – Includes fittings and mounting hardware for a straightforward installation

Pressure Range Details

This regulator includes two spring options to support a wide range of fuel system setups:

• 4-15 PSI Spring – Factory installed for many low-pressure throttle-body injection systems

• 16-65 PSI Spring – Included for EFI systems that require higher fuel pressure

Always follow the fuel pressure specifications provided by your fuel system or EFI manufacturer.

When Do I Need an Adjustable Bypass Fuel Pressure Regulator?

An adjustable bypass regulator is used when your fuel system needs controlled, stable pressure and a return-style fuel setup.

Common applications include:

• Throttle-Body Injection Systems – Allows precise low-pressure adjustment for many TBI setups

• EFI Conversions – Helps maintain the correct fuel pressure when upgrading to electronic fuel injection

• High-Pressure EFI Systems – Supports systems that demand higher fuel pressure using the included secondary spring

• High-Performance Builds – Helps keep fuel delivery consistent on engines with increased fuel demand

• Off-Road Broncos – Helps stabilize fuel pressure through changing angles, terrain, and load conditions

• Custom Fuel Systems – Provides adjustability for upgraded fuel pumps, modified fuel lines, and non-stock engine combinations

Additional Information

• Adjustable fuel pressure range: 4-65 PSI

• Factory-installed spring range: 4-15 PSI

• Included secondary spring range: 16-65 PSI

• Bypass/return-style regulator

• Machined 6061-T6 billet aluminum body

• Includes fittings and mounting hardware

• Suitable for many TBI, EFI, and custom fuel systems

Take control of your fuel system with a billet adjustable bypass regulator built for precise pressure control, clean installation, and dependable performance.

Dial in your Bronco or Ford truck fuel system with a billet adjustable bypass regulator that delivers precise 4-65 PSI control for TBI, EFI, and custom builds.