Add to Favorite Sellers. Quick Fuel 30-7023QFT 4-Port Fuel Pressure Regulator. 4-Port Fuel Pressure Regulator; 4-Port Regulator designed to provide smooth, consistent and repeatable performance. This regulator is machined from aircraft grade billet aluminum and anodized for added durability and reliable performance. Hard-coat anodized billet housing. Supports engines over 650 HP. #8 AN inlet and 4 x #8 AN outlet ports. Adjustable from 5-8 PSI. Fluorocarbon diaphragms and Viton® O-rings. Stainless steel pins, brass valve guides, and hard-coat anodized diaphragm plates. Compatible for use with all fuels. Serviced by using 30-7304 Rebuild Kit. Customer Service & Feedback. So we have a chance to make it right – we want your repeat business! Check out the official Holley Performance. For more great deals!!