A built in adjustable pressure regulator, no return line needed, flow at a rates up to 150 GPH, pressure up to 45psi, VacU Seal Technology (Shaft Seals Under Vacuum Instead Of Pressure for Long Life), wire screen in inlet port for added protection, complete installation kit with: "No Drill" mounting bracket, wiring harness, and 1/2” fuel lines. LIFETIME WARRANTY and Free Shipping!