The Airdog R4SBD348 Raptor 4G 100GPH Fuel Pump is engineered to deliver superior performance and reliability for your 1989-1993 5.9 Cummins. Featuring advanced 4G technology and a 100 GPH flow rate, this pump is designed for consistent fuel delivery under demanding conditions. Its Gerotor pump design eliminates the need for a return line, reducing installation complexity while enhancing durability. Equipped with a built-in adjustable regulator, preset at 10-13 PSI, it ensures optimal fuel pressure for smooth and quiet operation. The complete installation kit includes all necessary plumbing, hardware, and components for a hassle-free setup, making it a dependable choice for long-lasting performance.