Holley 12-804 Fuel Pressure Regulator 2 ports 1-4 Psi Adjustable

Holley 12-804 Fuel Pressure Regulator for Carburettor Applications

Take command of your carburettor’s fuel delivery with the Holley 12-804 Fuel Pressure Regulator. Designed to precisely regulate pressure from the fuel pump to the carburettor, this regulator helps maintain stable performance and avoids drivability issues caused by excessive fuel pressure.

• Adjustable fuel regulation from 1-4 psi
• .220" (7/32") restriction to help meter fuel accurately
• 3/8" NPT ports (1 in, 2 out)
• Chrome finish for a durable, polished look
• Mounting bracket included for easy installation
• Factory pre-set at 2.8 psi for immediate use with no guesswork
• Inlet pressure limit of 7 psi
• Specifically suitable for carburettor applications

Why this matters: Too much fuel pressure for a given needle and seat assembly can overload the needle and seat, leading to flooding or drivability problems. With a fully adjustable range and a factory preset, the Holley 12-804 gives you precise control to match your engine’s needs, ensuring consistent idle, throttle response, and overall reliability.

Practical benefits include easy tuning to accommodate different fuels or engine configurations, reduced flood risk during hot starts, and stable performance across varying RPMs. This regulator’s 1-in, 2-out configuration and chrome finish make it a straightforward upgrade or replacement for carburettor setups demanding dependable fuel pressure management.