For WALBRO / Ti Automotive GSL392 External Fuel Pump Kit Description: Interchange:GSL392 Design: Inline/ External (Mounts Outside of Tank) Installation Kit Included: Yes Flow: 255LPH at 43PSI & 12V Minimum Voltage: 12V Operating Pressure: 15-120 PSI (final fuel pressure set by regulator) High-quality fitting kit included Features: The GSL392 is a high pressure external fuel pump that's capable of supporting EFI applications up to 650BHP, where higher fuel pressure is necessary. These pumps have been a proven and extremely popular fuel delivery upgrade for years and are ideal for vehicles with big engine & performance modifications. .