Bosch 66865 Direct Injection High Pressure Fuel Pump

Overview

Bosch 66865 is a direct injection high pressure fuel pump for gasoline applications. It is built as a new, bolt-on external electric pump with a metal and steel housing, a built-in filter, and sealing components for a precise fuel delivery setup.

Compatible with select BMW GDI applications, including BMW 550i, BMW 650i, BMW 750i, M5, M6, and X5 models from 2012-2014. Bosch 66865 is engineered for direct injection fuel systems that require stable high-pressure fuel delivery.

Key Features

• Direct injection high pressure fuel pump for gasoline fuel systems
• New electric pump with bolt-on mounting
• External in-line design for fuel injection service applications
• Metal and steel construction with a square/rectangle connector
• Built-in filter, O-ring, and gasket/seal included
• Female connector with male blade terminals

Detailed Description

Bosch 66865 is part of the GDI High Pressure Pump line and is built for gasoline direct injection systems that depend on consistent pressure and metered fuel delivery. The pump uses a compression outlet, threaded or quick-connect inlet, and a single connector layout to match the requirements of the application. Bosch produces these fuel pumps on the same production lines used for OE fuel pumps and tests them to the same quality standards.

This part cross-references Bosch 13517599865 for the same application. It is a direct replacement choice for BMW 550i, BMW 650i, BMW 750i, M5, M6, and X5 fitments listed for 2012-2014. The Bosch 66865 part number is also useful when searching for a BMW direct injection high pressure fuel pump replacement by part number.

Common Uses

• Restoring fuel pressure in a direct injection system
• Replacing a worn or failing high pressure fuel pump
• Addressing hard starting related to fuel delivery loss
• Correcting drivability issues caused by inconsistent injection pressure
• Servicing gasoline engines that require external high pressure fuel delivery

Installation Notes

Verify inlet and outlet sizing, connector style, and mounting type before installation. This pump is an external, bolt-on unit with no mounting hardware, wiring harness, or seal kit listed beyond the included gasket/seal and O-ring. Confirm the vehicle’s fuel system configuration against the fitment data for BMW 550i, BMW 650i, BMW 750i, M5, M6, and X5 applications.

Quality Assurance

Bosch builds this pump to OE-level production and testing standards for long service life in aftermarket service. The Bosch 66865 is a new premium fuel pump designed to meet the demands of direct injection fuel systems.