Check the listing for details. HOLLEY 12-885 4 Port Double Adjustable Regulator 10AN Inlet/ 8AN Outlet 4-9 PS. Color: Black, Condition: New. Listed at 189.95 USD. buy by 3:00 pm cst & item will ship same day M-F thanks from RDRACINGINC.PLEASE MAKE SURE THIS WILL WORK FOR, AND YOU WANT IT BEFORE YOU BUY. THANKS RDRACINGINC. HOLLEYDOUBLE ADJUSTABLE FUEL REGULATOR4 Port Double Adjustable Regulator 1-10AN Inlet/ 4-8AN Outlet, 1-return line. Adjustable from 4-9 PSI new holleyPart # 12-885Holley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm. These regulators are compatible with E85 and alcohol applications. Made from billet aluminum, The idle adjustment design is strategically placed so that none of the ports are blocked like other designs. This regulator retain the true 4 port flow. •Alcohol and E85 compatible. •4 Port model with 10AN inlet and 8AN outlet ports.Features:Individual adjustment settings, one for idle and wide open throttle.Fuel pressure adjustability at idle can help prevent flooding at low rpmsWide open throttle settings help to prevent fuel starvation at the top end of the rpm rangeAlcohol and E85 compatible.The regulator is equipped with the vacuum/boost reference port connection on the cap. This can be connected to full manifold vacuum to slightly decrease fuel pressure at idle and cruise. This is a requirement on forced induction engines, so that the differential fuel pressure stays constant under boost. CHECK MY FEEDBACK I DELIVER!!!!, BIDDER PAYS $0 S/H, AK, HI, PR, WILL PAY SAME SHIPPING CHARGE, CLICK ON MY STORE TAG FOR MORE Track Page Views With Auctiva's FREE Counter