Bosch 66800 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Fuel Pump

Bosch 66800 is a new direct injection high pressure fuel pump for gasoline direct injection systems. It is built for select Ford, Lincoln, and Land Rover applications, including Ford Focus, Ford Fusion, Ford Escape, and Ford Explorer models that require precise fuel delivery at high pressure.

Bosch’s GDI High Pressure Pump line brings OE-style fuel system engineering to the aftermarket. These pumps are manufactured on the same production lines and tested to the same quality standards used for Bosch original equipment fuel pumps, helping support consistent fuel pressure and dependable operation.

• Brand: Bosch
• Brand line: GDI High Pressure Pump (New)
• Part number: 66800
• Direct injection high pressure fuel pump for GDI systems
• Electric, internal pump design
• New replacement part, not remanufactured
• Outlet quantity: 1
• Gaskets not included
• Mounting hardware not included

Fitment Coverage

• Fits 2013-2018 Ford Focus, N/A
• Fits 2013-2017 Ford Taurus, N/A
• Fits 2015-2017 Land Rover Discovery Sport, N/A
• Fits 2012-2017 Land Rover Range Rover Evoque, N/A
• Fits 2013-2016 Ford Escape, N/A
• Fits 2013-2016 Ford Fusion, N/A
• Fits 2015-2016 Lincoln MKC, N/A
• Fits 2013-2016 Lincoln MKT, N/A
• Fits 2013-2016 Lincoln MKZ, N/A
• Fits 2012-2015 Ford Edge, N/A
• Fits 2012-2015 Ford Explorer, N/A
• Fits 2013-2015 Land Rover LR2, N/A

This part cross-references AG9Z9350B and LR025599 for the same application.

Common Fuel System Issues

• Hard starting caused by low high-pressure fuel delivery
• Fuel pressure loss that affects drivability and throttle response
• Misfire or hesitation concerns tied to direct injection fuel supply
• Rough idle related to inconsistent pump output
• Check engine light conditions associated with fuel pressure faults

Installation Notes

Verify the vehicle’s engine and fuel system requirements before installation. This Bosch 66800 pump is an internal, electric high pressure fuel pump, so the existing fuel lines, seals, and mounting points should be inspected during service. Because gaskets and mounting hardware are not included, reuse only serviceable components or replace worn sealing parts as needed.

Quality Assurance

Bosch manufactures this GDI High Pressure Pump using the same production and testing standards applied to its original equipment fuel pumps. That OE-level process supports consistent fit, function, and long-term reliability for direct injection service.