EFI By-Pass Regulator

Holley does it again with their new die cast aluminum fuel pressure regulators. The same Holley quality that you expect at a price point that every budget can handle. The regulator contains 3\/8 in. NPT in\/out ports, a 3\/8 in. NPT return port, a 1\/8 in. NPT gauge port, and a 1\/8 in. NPT vacuum port for Boost Reference (1:1).1\/8 in. NPT barb fitting for boost reference port also included.