In-Tank Fuel Pump 535LPH Gas & E85

The In-Tank Fuel Pump 535LPH Gas & E85 from WALBRO / TI AUTOMOTIVE delivers high-flow fuel delivery for modified and performance vehicles that demand consistent pressure across fuel types. Engineered for builders and enthusiasts running forced induction, nitrous, or high-horsepower naturally aspirated platforms, this pump bridges the gap between street reliability and track-proven durability. Whether you're upgrading a late-model domestic, import tuner, or off-road build, this fuel pump ensures your engine receives uninterrupted fuel supply under sustained load—critical when OEM equipment reaches its limits.

At 535 liters per hour (LPH), this in-tank pump provides the flow rate necessary for engines producing 400+ horsepower while maintaining stable fuel pressure across the entire RPM band. The dual-fuel compatibility—gasoline and E85 ethanol blends—makes it ideal for flex-fuel tuning applications where alcohol content increases cooling effect and knock resistance. WALBRO's proven brush-motor design and sealed impeller construction ensure minimal noise and long service life, even under continuous high-demand operation. The compact 2.75 x 2.4 x 7.45-inch form factor allows straightforward installation in most stock fuel tanks without extensive modification, and the modular design simplifies both initial setup and future maintenance or replacement.

Performance tuners, engine builders, and serious enthusiasts running carbureted or fuel-injected applications benefit from this pump's ability to handle both pump octane and race fuel without degradation. Installation pairs best with quality fuel-grade hose, appropriate regulators, and filter upgrades to maximize pump lifespan and protect injectors or carburetors downstream. Verify your vehicle's fuel sending unit compatibility and consult your engine management calibrator to confirm flow and pressure settings align with your specific build. Weighing just 1.06 lbs, it adds negligible mass while delivering the flow margin required for reliable operation on boost, allowing builders to focus resources on power rather than fuel system anxiety.