Bosch 66841 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Fuel Pump 66841

Bosch 66841 is a direct injection high pressure fuel pump for gasoline applications. It is built for vehicles that rely on precise fuel delivery at elevated pressure, including Ford Mustang, Ford Fusion, Lincoln MKZ, Ford Escape, Ford Explorer, Lincoln MKC, Ford Edge, and Ford Focus applications.

Key Features

• Direct injection high pressure fuel pump for gas engines
• Electric, external in-line pump design with bolt-on mounting
• Metal and steel housing construction
• Fuel filter and gasket/seal included
• Female square/rectangle connector with blade terminals
• Inlet and outlet sizes designed for fuel injection service
• New Bosch premium replacement part

Product Details

This Bosch GDI High Pressure Pump is part of the Bosch GDI High Pressure Pump line, built for modern gasoline direct injection systems that require stable pressure and accurate metering. Bosch states these aftermarket pumps are produced on the same production lines and tested to the same quality standards as Bosch OE fuel pumps, helping maintain consistent fuel delivery and long service life. Part number 66841 cross-references Ford EJ7Z9350A for the same application.

Vehicle coverage includes Fits 2015-2023 Ford Mustang, N/A; Fits 2017-2020 Ford Fusion, N/A; Fits 2017-2020 Lincoln MKZ, N/A; Fits 2017-2019 Ford Escape, N/A; Fits 2016-2019 Ford Explorer, N/A; Fits 2015-2019 Lincoln MKC, N/A; Fits 2015-2018 Ford Edge, N/A; and Fits 2016-2018 Ford Focus, N/A. Use Bosch 66841 when replacing a worn or failing GDI high pressure pump on these listed vehicles.

Common Problems This Part Can Address

• Hard starting caused by insufficient high-pressure fuel delivery
• Fuel pressure loss in direct injection systems
• Engine hesitation or stumble under load
• Driveability issues related to inconsistent injector supply pressure
• Fuel system faults tied to a failing mechanical or electric high pressure pump

Installation Notes

Confirm the inlet and outlet sizes, connector style, and mounting type before installation. This pump is an external, bolt-on unit with a female square/rectangle connector and blade terminals. The gasket/seal and fuel filter are included, while mounting hardware and wiring harness are not listed as included. Clean the fuel system connection points and verify all seals are seated correctly before returning the vehicle to service.

Quality Assurance

Bosch builds this premium fuel pump to OE-level production and testing standards for aftermarket service. The result is a replacement designed for direct injection fuel systems where consistent pressure and dependable operation matter.