25-300BK High Volume Fuel Pressure Regulator for Honda 1999-2000 Civic Si 1.6L

High Volume Fuel Pressure Regulator for Honda

This 25-300BK High Volume Fuel Pressure Regulator for Honda 1999-2000 Civic Si 1.6L is an aftermarket replacement designed to maintain a stable fuel pressure in the fuel rail, ensuring optimal air-fuel mixture for engine performance. It is built for the 1999-2000 Honda Civic Si with the 1.6L engine, providing a higher flow capacity than stock for modified fuel systems.

Overview

This high volume fuel pressure regulator is a bolt-on replacement for the stock regulator on your Honda Civic Si, delivering consistent fuel pressure under high-demand conditions. It is specifically for the 1999-2000 Civic Si 1.6L, handling increased fuel flow from upgraded pumps and injectors. The 25-300BK regulator ensures your engine gets the fuel it needs for reliable power delivery.

Built For Performance

• High-volume design supports aftermarket fuel pump and injector upgrades.
• Precision-machined aluminum body resists corrosion and withstands high pressure.
• Anodized black finish for durability and a clean appearance.
• Adjustable pressure settings for fine-tuning air-fuel ratios.
• Includes a vacuum reference port for accurate pressure regulation under load.

Fits These Machines

• for Honda 1999-2000 Civic Si 1.6L

On-The-Job Use

• Ideal for track days or spirited street driving where consistent fuel delivery is critical.
• Used in turbocharged or supercharged builds to manage higher fuel demand.
• Suitable for daily-driven Civic Si models with stock engines requiring a reliable regulator.

Specs At A Glance

Good To Know

Q: Will this regulator work with my stock Civic Si fuel system? A: Yes, it will operate with a stock system but is designed to handle higher flow rates. It is a direct replacement for the factory regulator on the 1999-2000 Civic Si.

Q: Does this regulator require adjustment before installation? A: It comes with a baseline pressure setting, but for custom builds you may need to adjust the spring tension to match your fuel pressure requirements. Using a fuel pressure gauge is recommended during setup.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.