Quantum Intank 255LPH Fuel Pump For GMC K1500 Sierra Pickup 1996-1997 4.3L, 5.0L, 5.7LCategory: 1998 Gmc Sierra PickupLooking for analternative to loud, unreliable, and expensive Walbro in-tanks? Try one of ourHFP 255LPH high pressure fuel pumps Proven reliability,verified pressure output by RC Engineering, and a Lifetime Warranty (unheard of inthe performance fuel pump industry). A key feature of our HFP 255LPH fuel pumpis the bypass valve, which is set at a higher PSI than the Walbro line, makingour pumps especially suited to turbocharged and supercharged applications, whereconsistent fuel pressure is a necessity. A clean sheet vane-impeller designlends itself to quieter operation compared to other 255LPH intank pumps.Instead of the vibrating hum that is usually associated with aftermarket fuelpumps, our pumps produce a very faint wheen sound during priming (when the keyis first turned on) and are virtually SILENT when the engine is running. All ofour fuel pumps are QS9000 quality certified, and include vehicle specificinstallation kits.This is the exact same pump we run in our86 LX Coupe shop carpowered by a Ford Racing 5.0L Coyote motor which makes 407rwhp/388rwtq. Members on https://www.corral.net are usingthis pump with supercharged/ turbocharged combos making over 500rwhp.Refer to the flow testsbelow done by RC Engineering. The higher the pressure, the more our pumpsoutflow their Walbro equivalent.