Fuel Handling Systems

Delphi T-11 Small Engine Fuel Pump

The Delphi T-11 Small Engine Fuel Pump is designed to provide uninterrupted flow of fuel to an engine using fuel injection at system pressure. It is specifically designed for use with small gasoline engines. It measures 30 mm in diameter compared to typical automotive fuel pumps, which are 38 mm to 44 mm in diameter.

The Delphi T-11 Fuel Pump features low current draw — less than 1.4 amps compared to 6 amps, which is characteristic for automotive fuel pumps — while providing a minimum flow rate of 3 grams⁄second (14.4 liters⁄hour) at 12 V and 250 kPa. The Delphi T-11 Fuel Pump is available with a standard copper commutator, or optional carbon commutator.

The Delphi T-11 Fuel Pump is offered as a stand-alone inline unit, or it can be integrated into a complete fuel module with optional features that could include:

  • Fuel level sensor
  • Fuel limiting switch
  • Jet pump fuel transfer
  • Radio frequency interference (RFI) package
  • Integral fuel filter
  • Integral pressure regulator


  • Small, compact size enables significantly greater packaging flexibility when space is at a premium
  • Excellent low voltage performance delivers improved startability
  • Optional carbon commutator provides improved durability

A conventional automotive fuel pump (left) shown with the Delphi T-11 Small Engine Fuel Pump (right) demonstrates the significant difference in size of these designs.

Typical Applications

The Delphi-T11 Small Engine Fuel Pump is designed for use in non-automotive small gasoline engine applications such as motorcycles, scooters, small all-terrain vehicles, snowmobiles, personal watercraft and lawn and garden equipment. It can also be used as a transfer pump for automotive auxiliary fuel tanks.

Performance Advantages

The Delphi T-11 Small Engine Fuel Pump can be used with fuel injection systems to help reduce emissions by lowering heat⁄vapor generation. It can also help manufacturers meet new and future non-automotive emissions regulations around the world. The Delphi T-11 Fuel Pump provides superior low-fuel delivery performance and excellent pump durability. Its simplicity of design also offers lower cost.

The Delphi Advantage

Building on the benefits of more than 50 years' experience in fuel handling systems, Delphi is dedicated to the development of high quality, cost effective fuel handling technologies for integration with current and new engine designs. Delphi engineers hold numerous fuel handling trade secrets and many patents for fuel modules and fuel pump design. Delphi engineers understand the complex array of issues involved in efficient, reliable fuel handling performance. Delphi also has full capabilities to support fuel handling systems development, validation and production.

As a global leader in engine management systems technology, Delphi can help manufacturers around the world meet emissions requirements, improve fuel economy and enhance performance. Delphi is a source for high value solutions and our systems expertise is built into every product. Delphi's flexible engineering approach encourages collaboration. And, Delphi has a thorough understanding of automotive markets around the world and a global network of resources.