Bosch 66846 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump 66846

Bosch GDI High Pressure Pump 66846 is a direct injection high pressure fuel pump for gasoline applications. It is built on Bosch production lines and tested to the same quality standards used for Bosch OE fuel pumps, making it a practical replacement for Ford and Lincoln direct injection fuel systems.

The Bosch GDI High Pressure Pump line focuses on OE-style fuel delivery performance for modern gasoline engines. For drivers searching for a Ford Explorer fuel pump replacement, a Ford Flex high pressure fuel pump, or a Lincoln MKT GDI pump, part number 66846 is a direct-fit option for the listed applications.

Key Features

• Direct injection high pressure fuel pump for gas engines
• External, in-line electric pump design
• Metal and steel housing for durable construction
• Fuel filter and gasket/seal included
• Quick-connect inlet with M14 x 1.5 outlet fitting
• Female connector with male blade terminals
• New premium-grade replacement part
• Interchange reference: AA5Z9350A

Detailed Description

Bosch 66846 is a premium direct injection high pressure fuel pump engineered for gasoline fuel delivery systems. It features a bolt-on external mounting style, one inlet and one outlet, metered fuel delivery, and an electric pump design suited for GDI-equipped vehicles. The pump uses a square/rectangle connector shape, quick-connect inlet type, compression outlet type, and includes an O-ring and gasket/seal for installation sealing.

This Bosch GDI High Pressure Pump is listed for 2013-2019 Ford Explorer, 2010-2019 Ford Flex, 2010-2019 Ford Taurus, 2010-2019 Lincoln MKT, and 2010-2016 Lincoln MKS. If you need a Ford Explorer direct injection high pressure fuel pump or a Lincoln MKS fuel injection pump replacement, Bosch 66846 matches the specified applications.

What It Helps Address

• Hard starting caused by weak high-pressure fuel delivery
• Fuel pressure loss in direct injection systems
• Engine hesitation under load
• Lean-running conditions related to fuel supply issues
• Fuel system faults tied to a worn or failing GDI pump

Installation Notes

Verify the inlet and outlet sizes, connector style, and outlet thread specification before installation. This pump is external and bolt-on, with no mounting hardware or wiring harness included. Use the included seal components during installation, and confirm the vehicle’s fuel system diagnosis before replacing the pump.

Fits 2013-2019 Ford Explorer, N/A. Fits 2010-2019 Ford Flex, N/A. Fits 2010-2019 Ford Taurus, N/A. Fits 2010-2019 Lincoln MKT, N/A. Fits 2010-2016 Lincoln MKS, N/A.

Quality Assurance

Bosch states that this fuel pump is produced on the same manufacturing lines and tested to the same standards as Bosch OE fuel pumps. That OE-level production approach supports consistent fit and service life for the listed Ford and Lincoln applications.