Specifically designed for carbureted street or racing engines on gasoline, the SS-Series adjustable regulator offers higher flow, quicker response and less pressure creep than competing two-port designs. Popular in circle track applications up to and including NASCAR? level horsepower and as a dedicated nitrous regulator. Adjustable from 5-10 PSI. P/N 13205 provides 3/8? NPT inlet/outlet ports. 1/8' NPT gauge port. Regulator re-seats when the needle and seat closes, preventing pressure creep. Includes mounting bracket. Not rated for alcohol fuels, ethanol or methanol. Carbureted Adjustable Regulator - 2-Port, 3/8? NPT. SS adjustable carbureted regulator; adjustable from 5-12 PSI; eliminates pressure creep