Cast Bypass Regulator W/JET - Features blue powder-coated top and is designed for use with a belt driven or mechanical fuel pump. Adjustable jet provides tuning of low RPM fuel pressure. Comes with stainless mounting bracket. All threads are NPT. -Adjustable from 4.5 - 9 PSI; Preset to 6.5 PSI -3/8 in. NPT ports -.375 in. (3/8 in.) restriction -Recommended for use with alcohol fuels -Includes an 1/8 in.