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<h2><span style="font-size: 18px;">What is a fuel injection pressure regulator?</span></h2><p><span style="font-size: 14px;">The fuel injection pressure regulator, or fuel pressure regulator (FPR), is a key component in a vehicle's fuel delivery system. Its primary function is to maintain a consistent fuel pressure for the fuel injectors. This ensures the fuel is properly atomized and metered into the engine for efficient combustion. The regulator compensates for fluctuations in <a href="https://a-premium.com/fuel-pump">fuel pump</a> output and other pressure changes, providing a stable pressure to the injectors. It also has a relief valve that opens to release any excess pressure, protecting the fuel system components. Proper operation of the fuel pressure regulator is crucial for optimal engine performance, and regular inspection/replacement of this part is an important maintenance item.</span></p><h2><span style="font-size: 18px;">How to replace a fuel pressure regulator?</span></h2><ul><li><span style="font-size: 14px;">Relieve the fuel system pressure using a pressure gauge or by disconnecting the fuel pump.&nbsp;</span></li><li><span style="font-size: 14px;">Detach the inlet and outlet fuel lines from the old regulator before unbolting and removing it from the mounting location.&nbsp;</span></li><li><span style="font-size: 14px;">Install the new regulator in the same orientation and secure it in place.&nbsp;</span></li><li><span style="font-size: 14px;">Reconnect the fuel lines ensuring a tight seal.&nbsp;</span></li><li><span style="font-size: 14px;">Restore fuel system pressure by powering the pump and starting the engine, checking for any leaks.&nbsp;</span></li><li><span style="font-size: 14px;">Use a gauge to verify the new regulator is maintaining the proper fuel pressure, and making any necessary adjustments.</span></li></ul><h2><span style="font-size: 18px;">Bad fuel pressure regulator symptoms</span></h2><p><span style="font-size: 14px;">A malfunctioning fuel pressure regulator can exhibit a variety of concerning symptoms. One of the most evident issues is fluctuating or consistently low fuel pressure, as the regulator may no longer be able to maintain the proper pressure range. This improper fuel pressure can then lead to an air/fuel mixture imbalance, causing the engine to stall or misfire. Additionally, the reduced fuel pressure can limit the engine's ability to produce full power, resulting in a notable loss of acceleration and overall responsiveness. Starting the engine, particularly when it's cold, can also become increasingly difficult due to the insufficient fuel supply. Furthermore, a faulty regulator may cause the engine to run too high, leading to increased exhaust emissions. Finally, cracks or leaks in the regulator can allow fuel to escape the system, creating potential fire hazards and fuel economy issues. Recognizing and addressing these symptoms promptly is crucial for maintaining the optimal performance and safety of your vehicle's fuel system.</span></p><h2><span style="font-size: 18px;">Precision control, smooth ride - A-Premium fuel pressure regulator</span></h2><p><span style="font-size: 14px;">A-Premium's fuel pressure regulator is engineered with premium, durable materials to precisely maintain the ideal fuel pressure required by your engine. This not only ensures smooth, efficient engine operation and improved fuel economy but also effectively reduces harmful emissions and extends engine lifespan. Our commitment to you extends beyond just a 90-day return window and 1-year warranty, our customer service team is also on hand 24 hours a day, 7 days a week to address your needs, expecting to provide a perfect fitting, high-quality solution to keep you confidently cruising the roads.</span></p>

Fuel Injection Pressure Regulator

Air Cleaner

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Air Filter Box

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Mass Air Flow Sensors/Car MAF Sensors | A-Premium

Air Flow Sensor

Air Intake Duct

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Air Intake Hose

Air Intake Manifold Actuator Control Solenoid

Air Intake Manifold Flap Adjuster

Air Intake Manifold Runner Control Sensor

Air Intake Resonator

Electric Vacuum Pump

Engine Air Duct Assembly

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Engine Air Filter

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Intake Manifold

Intake Manifold Flap Actuator

Intake Manifold Repair Bracket

Intake Manifold Runner Control Valve

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Intercooler

Intercooler Hose

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Oxygen Sensor

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Pressure Sensor

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Supercharger Pulley Drive Unit

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Supercharger Snout Rebuild Kit

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Throttle Body

Throttle Cable

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Throttle Position Sensor

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Turbocharger

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Turbocharger Gasket Kit

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Turbocharger Oil Line

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Vacuum Pump

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Air Filters & Intake Systems

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Camshaft Adjuster

Camshaft Adjuster Cover

Camshaft Kit

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Camshaft Timing Gear

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Camshafts

Chain Tensioner Adjuster

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Cylinder Head

Cylinder Head Assembly

Eccentric Shaft Actuator

Engine Timing Belt

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Engine Valve Cover

Engine Valve Cover Gasket

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Harmonic Balancer

Rocker Arm

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Rocker Arm Shaft Lifter Assembly

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Timing Belt Kit

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Timing Chain Gear

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Timing Chain Kit

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Timing Cover

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Timing-Control Valve Solenoid

Valve Cover Gasket

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Valve Lifter Guides

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Valve Lifters Tappet

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Cams, Timing & Valvetrain

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Belt Tensioner

Coolant Level Sensor

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Crank Installer Tool

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Crankcase Breather Hose

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Crankcase Breather Valve

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Crankshaft Position Sensor

Crankshaft Pulley

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Engine Oil Dipstick

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Engine Oil Dipstick Tube

Engine Oil Filter

Engine Oil Pan Gasket

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Flywheel

Harmonic Balancer Crankshaft Hub

Knock Sensor

Oil Baffle

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Oil Cooler

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Oil Cooler Line

Oil Drip Pan

Oil Filler Cap

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Oil Filter

Oil Filter Base

Oil Filter Cover

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Oil Filter Housing

Oil Filter Housing Cover

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Oil Level Sensor

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Oil Pan

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Oil Pump

Oil Pump Drive Gear Shaft

Oil Pump Pickup Tube

Oil Separator

Serpentine Belt

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Cranks, Pistons, Oil & Components

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Camshaft Position Sensor

Camshaft Position Sensor & Magnet Kit

Connector Plug

Distributor Cap

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Electronic Ignition System

Engine Valve Covers & Ignition Coils Kits

Glow Plug

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Glow Plug Relay Module

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Ignition Coil

Ignition Coils & Spark Plugs & Wires Kits

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Ignition Coils & Spark Plugs Kits

Ignition Coils & Wires Kits

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Ignition Distributor

Ignition Lock Cylinder

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Ignition Starter Switch

Ignition Switch Actuator

Kill Switch

Knock Detonation Sensor

Relay

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Spark Plug

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Spark Plug Wire

Electronic Control Modules, Ignition & Distributors

Engine Wiring Harness

Intake Manifold Repair Kit

Pulley

Engine Components & Accessories

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Active Grille Shutter Actuator

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Auxiliary Water Pump

Drive Motor Inverter Cooler

Electric Engine Water Pump

Engine Coolant Air Bleeder Valve

Engine Coolant Pipe

Engine Coolant Shut Off Valve

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Expansion Tank

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Expansion Tank Mounting Plate

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Fan Pulley Bracket

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Fuel Cooler

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Overflow Hose Connector

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Radiator

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Radiator Control Fan Module

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Radiator Core Support Skid Bar Plate

Radiator Fan Cooling Motor

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Radiator Hose

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Engine Cooling

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The engine comprises many essential elements such as the lower cylinder block, upper cylinder head(s), and the cooling & lubricating systems. With A-Premium aftermarket engine components, you can expect that your engine deliver years of reliable performance. We offer a diverse selection of engine components from air filters and ignition coils (kits) to fuel pumps to cater to your needs.

Subaru Legacy Fuel Injection Pressure Regulator