Bosch 66810 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump for BMW

The Bosch 66810 is a new direct injection high pressure fuel pump for select BMW models with gasoline direct injection. It is built on Bosch premium fuel pump manufacturing standards, using the same production and testing discipline applied to Bosch original equipment fuel pumps for consistent, long-term operation.

This Bosch GDI High Pressure Pump line focuses on precise fuel delivery for direct injection systems. For BMW 320i, 328i, X3, X5, and other listed applications, the Bosch 66810 supports the high-pressure side of the fuel system where accurate pressure control is critical.

Key Features

• Brand: Bosch
• Part number: 66810
• Direct injection high pressure fuel pump
• New, not remanufactured
• Electric operation
• Internal mounting location
• 1 outlet configuration
• Fuel pump gasket not included
• Mounting hardware not included
• OE-style Bosch manufacturing and testing standards

Detailed Description

Bosch engineers bring premium fuel pump technology to the aftermarket with this GDI High Pressure Pump. The pump is manufactured and tested to the same rigorous quality standards used for Bosch original equipment fuel pumps, helping maintain reliable fuel delivery in direct injection systems. If you are replacing a worn BMW high pressure fuel pump, the Bosch 66810 is a direct replacement option for the listed vehicles and applications.

Compatible BMW applications include 2012-2016 BMW 328i, 2013-2016 BMW 328i xDrive, 2014-2016 BMW 428i, 2015-2016 BMW 528i, 2015-2018 BMW 320i, and 2016-2018 BMW X5. This part number 66810 also cross-references 13518604229 for the same application.

Common Problems This Pump Can Address

• Hard starting caused by insufficient high-pressure fuel delivery
• Fuel pressure loss in direct injection systems
• Engine hesitation or stumble under load
• Rough idle related to pump wear
• Driveability issues tied to a failing BMW high pressure fuel pump

Installation Notes and Tips

Verify the vehicle’s fuel system configuration and match the part number before installation. This pump is an internal electric unit, so inspect the fuel system for contamination, damaged seals, or related pressure-control faults before completing the repair. Because gaskets and mounting hardware are not included, confirm the required service parts are on hand before beginning the job.

For BMW 228i, 328i, 428i, X3, X4, X5, Z4, and related models, confirm the exact engine and fuel system application against the vehicle catalog before installation. Proper diagnosis of low-pressure supply, electrical power, and direct injection control signals helps prevent repeat failures.

Quality Assurance

Bosch manufactures this fuel pump using the same production lines and quality standards applied to Bosch original equipment fuel pumps. That process supports consistent fit and dependable operation for direct injection service work on BMW applications.