AEM Black Adjustable Fuel Pressure Regulator for Select 1996-2005 Honda and Acura (25-301BK)

Fits select 1996-2005 Honda Civic, Accord, S2000, CR-V, and Acura CL models.

The AEM 25-301BK Adjustable Fuel Pressure Regulator is engineered to provide precise fuel management for high-output Honda and Acura engines, capable of supporting flow for builds up to 1,000 horsepower. This unit features patented interchangeable discharge ports (U.S. Patent # 6,298,828) that enable you to match the regulator’s output to the capacity of virtually any fuel pump.

CNC-machined from 6061-T6 billet aluminum with a durable black finish, this regulator is designed for a clean installation, mounting directly to the factory fuel rail or an AEM High Volume Fuel Rail. It utilizes a boost-dependent 1:1 rising fuel pressure rate, making it an essential component for forced induction setups where maintaining a consistent pressure differential is required.

• Adjustable from 20 psi to maximum fuel pump capacity
• Precision CNC-machined 6061-T6 billet aluminum construction
• Includes interchangeable discharge orifices to match specific pump outputs
• Base tapped to accept -6 AN or 9/16"x18 fittings
• Includes custom barb fitting to accommodate factory fuel hoses
• Boost-dependent 1:1 rising fuel pressure rate
• Supports engines up to 1,000 HP
• Manufacturer Part Number: 25-301BK