Holley Die-Cast In-Line Fuel Pressure Regulator - Die Cast - 4-1/2 to 9 psi - 3/8 in NPT Inlet - 3/8 in NPT Outlet - 3/8 in Return - 1/8 in NPT Gauge Port - Bypass - Chrome - Gas 31012BK Number 2176 is stock replacement/street

Number 2176 is stock replacement/street legal part for V8s with OEM 4-bbl

1963-1967 Chevrolet P30 Series

Popular fitments include the C5 Corvette for example

1973-1977 Buick Regal

Holley Die-Cast In-Line Fuel Pressure Regulator - Die Cast - 4-1/2 to 9 psi - 3/8 in NPT Inlet - 3/8 in NPT Outlet - 3/8 in Return - 1/8 in NPT Gauge Port - Bypass - Chrome - Gas 31012BK Number 2176 is stock replacement/streetHolley does it again with their new die cast aluminum by pass style fuel pressure regulators. The same Holley quality that you expect at a price point that every budget can handle. 1 8" NPT barb fitting for boost reference port included. Features: Die Cast aluminum construction 3 8 NPT Inlet, Outlet, and Return ports 1 8 NPT Gauge Port 1 8" NPT Boost Reference " 1: 1 SPECS: Brand: Holley Color: Chrome Emission Code: 3 Fuel System: Carbureted Fuel