Delphi HM10104 Direct Injection High Pressure Fuel Pump

Overview of Delphi HM10104 Direct Injection High Pressure Fuel Pump

The Delphi HM10104 is a mechanical direct injection high pressure fuel pump designed for select Mazda vehicles. Engineered to deliver precise fuel flow, this pump supports optimal engine performance in Mazda 3, Mazda 6, and Mazda CX-7 models running on gasoline.

• Compatible with Mazda 3, Mazda 6, and Mazda CX-7 gasoline engines
• Mechanical pump type with direct injection high pressure capability
• Metal housing in silver color for durability and corrosion resistance
• Quick connect inlet with 0.313 inch outside diameter
• Threaded outlet fittings (M14-1.5) with three outlet ports
• Two male blade terminals for electrical connection
• Includes gasket or seal for proper installation
• External pump design for straightforward mounting

Detailed Product Description

The Delphi HM10104 direct injection high pressure fuel pump is built with a robust metal housing finished in silver, ensuring long-lasting durability under demanding engine conditions. Its mechanical design supports consistent fuel delivery required for direct injection systems in gasoline-powered Mazda 3, Mazda 6, and Mazda CX-7 vehicles. The pump features a quick connect inlet with a 0.313 inch outside diameter, facilitating secure fuel line attachment. The outlet side includes three threaded ports with M14-1.5 fittings, allowing reliable fuel flow to the engine. Electrical connections are made via two male blade terminals, designed for compatibility with standard wiring harnesses (not included). This external pump comes with a gasket or seal to maintain a tight, leak-free installation.

Common Applications and Issues Addressed

• Replacement for failing or worn direct injection high pressure fuel pumps in Mazda 3, 6, and CX-7
• Resolves fuel delivery inconsistencies causing engine hesitation or misfires
• Addresses fuel pressure loss impacting engine performance and fuel efficiency
• Fixes leaks or seal failures related to the pump housing or connections
• Supports restoration of proper fuel system pressure in mechanical pump setups

Installation Notes and Tips

Installation of the Delphi HM10104 requires careful handling to ensure proper sealing and connection. The included gasket or seal must be installed correctly to prevent fuel leaks. Note that mounting hardware and wiring harness are not included and must be sourced separately. Ensure the electrical terminals match the vehicle’s wiring configuration before installation. The external pump design allows for accessible mounting locations, but verify compatibility with your specific Mazda model year and engine variant.

Quality Assurance and Warranty

Delphi manufactures the HM10104 as a standard replacement part meeting OEM specifications for fit and function. The metal housing and mechanical components are designed for durability and consistent performance. While specific warranty details are not provided here, Delphi parts typically come with manufacturer-backed warranties covering defects in materials and workmanship. Verify warranty terms with the parts distributor or installer.