COBB Subaru/Toyota In-Tank 4.5 Bar Fuel Pressure Regulator Kit (346750)

Support higher horsepower demands and improve fuel injector performance with the COBB In-Tank 4.5 Bar Fuel Pressure Regulator Kit (346750). Designed for select Subaru and Toyota vehicles, this kit replaces the factory in-tank regulator to provide a higher fixed base pressure of 4.5 Bar (approximately 65.2 psi). Increasing the base pressure helps prevent fuel starvation during high-load conditions and allows your existing injectors to support more power by increasing their effective flow rate.

• Fixed 4.5 Bar fuel pressure rating for consistent delivery
• Direct replacement for the factory in-tank regulator unit
• Enables higher fuel flow capacity from existing injectors
• Essential for modified vehicles requiring increased fueling headroom
• Includes necessary O-rings and hardware for a secure installation

By maintaining a higher pressure at the rail, this COBB regulator ensures better fuel atomization and more reliable tuning on forced induction or high-output naturally aspirated builds. It installs directly into the OE fuel pump housing for a clean, factory-style fitment without the need for external mounting or complex plumbing.