Bosch 66801 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump 66801

Bosch 66801 is a new direct injection high pressure fuel pump for select BMW GDI applications. It is built for the fuel delivery demands of turbocharged and direct-injection engines, with electric operation and an internal mounting design.

Key Features

• Brand: Bosch GDI High Pressure Pump (New)
• Part number: 66801
• Direct injection high pressure fuel pump for gasoline direct injection systems
• Electric pump design
• Internal mounting location
• Outlet quantity: 1
• New, not remanufactured
• Package contents: 1 high pressure pump
• Cross-reference: BMW 13517584461

Product Details

Bosch engineers manufacture these premium fuel pumps on the same production lines used for Bosch original equipment fuel pumps, then test them to the same quality standards. The Bosch GDI High Pressure Pump line is built for consistent fuel pressure delivery in direct injection systems, helping maintain proper engine operation in BMW 228i, 320i, 328i, 428i, 528i, X1, X3, and Z4 applications. If you are replacing a failing BMW high pressure fuel pump, Bosch 66801 provides an OE-style service part for the fuel system.

Vehicle Fitment

• Fits 2014 BMW 228i, N/A
• Fits 2012-2014 BMW 320i, N/A
• Fits 2013-2014 BMW 320i xDrive, N/A
• Fits 2012-2014 BMW 328i, N/A
• Fits 2014 BMW 328i GT xDrive, N/A; to 02/2014
• Fits 2014 BMW 328i xDrive, N/A; to 02/2014
• Fits 2013-2014 BMW 328i xDrive, N/A
• Fits 2014 BMW 428i, N/A; to 02/2014
• Fits 2014 BMW 428i, N/A
• Fits 2014 BMW 428i xDrive, N/A; to 02/2014
• Fits 2014 BMW 428i xDrive, N/A
• Fits 2012-2014 BMW 528i, N/A
• Fits 2012-2014 BMW 528i xDrive, N/A
• Fits 2012-2014 BMW X1, N/A
• Fits 2013-2014 BMW X3, N/A
• Fits 2012-2014 BMW Z4, N/A

Common Replacement Reasons

• Hard starting or extended crank on direct injection BMW engines
• Fuel pressure loss that affects drivability and throttle response
• Engine hesitation, stumble, or misfire concerns tied to high-pressure fuel delivery
• Fuel system fault codes related to the high pressure pump
• Restoring proper operation after pump wear or internal failure

Installation Notes

Verify the BMW application, engine configuration, and production date before installation, especially for 2014 models with notes through 02/2014. Inspect the fuel system for contamination, damaged seals, or related faults before replacing the pump. Follow factory service procedures for direct injection fuel system service and prime the system after installation.

Quality Assurance

Bosch builds this pump using the same manufacturing and testing standards applied to Bosch original equipment fuel pumps. That OE-level process supports reliable fuel delivery for direct injection service in BMW applications. Part number 66801 is a new replacement component for the Bosch GDI High Pressure Pump line.