Walbro F90000285 Hellcat 525LPH E85 High Performance In-Tank Fuel Pump

Genuine Walbro / TI Automotive 525 LPH high-performance in-tank fuel pump for high-power petrol and E85 applications.

The F90000285, commonly known as the Walbro 525 or Hellcat 525, is a high-flow in-tank fuel pump designed for demanding high-performance fuel systems.

Featuring TI Automotive's DCSS dual-channel turbine technology, the F90000285 provides exceptional fuel delivery at elevated fuel pressures, making it particularly suitable for turbocharged, supercharged and high-power E85 applications.

Unlike many high-flow pumps, the F90000285 incorporates an internal check valve, helping maintain fuel pressure after shutdown and reducing extended cranking during restart.

PRODUCT FEATURES

• Genuine Walbro / TI Automotive
• High-flow in-tank fuel pump
• E85 compatible
• Suitable for petrol / gasoline
• Internal check valve
• High-pressure relief setting
• 11 mm fuel inlet
• 11 mm fuel outlet
• Overall pump length: 131 mm
• Main housing diameter: 39 mm
• Lower housing diameter: 50 mm
• Test voltage: 13.5 V

FLOW PERFORMANCE

The F90000285 is commonly marketed as a 525 LPH fuel pump.

Actual fuel flow depends on fuel pressure and supply voltage.

TI Automotive flow data shows approximately:

• 448 LPH @ 40 psi / 13.5 V
• 427 LPH @ 50 psi / 13.5 V
• 404 LPH @ 60 psi / 13.5 V
• 382 LPH @ 70 psi / 13.5 V
• 361 LPH @ 80 psi / 13.5 V

This strong high-pressure performance makes the F90000285 particularly suitable for high-boost fuel systems where fuel pressure rises significantly under boost.

FUEL COMPATIBILITY

Suitable for:

• Petrol / Gasoline
• E85
• Flex Fuel

Its E85 compatibility makes the F90000285 an excellent choice for high-power ethanol-fuelled builds.

INTERNAL CHECK VALVE

The F90000285 features an integrated internal check valve.

This helps prevent fuel-system pressure bleed-down after the engine is switched off, reducing the possibility of extended cranking during restart.

PERFORMANCE APPLICATIONS

Ideal for:

• High-power Mazda RX-7 builds
• High-power Mazda RX-8 builds
• Turbocharged applications
• E85 conversions
• High-boost engines
• Motorsport applications
• Custom high-flow fuel systems

The F90000285 is a universal high-performance fuel pump. Installation requirements vary depending on the vehicle, fuel tank and pump hanger configuration.

ELECTRICAL REQUIREMENTS

High-flow fuel pumps require an adequate electrical supply to achieve their rated performance.

For high-performance installations, RSG recommends:

• Dedicated fuel pump relay
• Correctly sized power and ground wiring
• Appropriate fuse protection
• High-quality electrical connections
• Verification of voltage directly at the pump under load

Insufficient voltage or undersized wiring can significantly reduce fuel-pump performance.