Bosch 66820 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump 66820

Bosch 66820 is a new direct injection high pressure fuel pump for gasoline direct injection systems. It is built for Mercedes-Benz performance applications that require precise fuel delivery under high pressure, including CLA45 AMG, GLA45 AMG, and SLK55 AMG fitments.

Key Features

• Brand: Bosch GDI High Pressure Pump (New)
• Part number: 66820
• Direct injection high pressure fuel pump for GDI systems
• Electric operation with internal mounting
• Outlet quantity: 1
• New construction with no remanufactured components
• Package contents: high pressure pump
• Cross-reference part numbers: 1330700001, 1520700601

Product Details

The Bosch GDI High Pressure Pump line is engineered for modern direct injection fuel systems that depend on stable pressure and accurate fuel metering. Bosch manufactures these pumps on the same production lines used for original equipment applications and tests them to the same quality standards, supporting consistent operation in demanding Mercedes-Benz engines. This Bosch 66820 fuel pump is a direct injection high pressure fuel pump for vehicles that require internal, electric fuel delivery at the pump level.

Compatible With 2014-2019 Mercedes-Benz CLA45 AMG, N/A; 2015-2019 Mercedes-Benz GLA45 AMG, N/A; and 2012-2016 Mercedes-Benz SLK55 AMG, Right Side Tank. The Bosch 66820 is a direct-fit service part for these applications and is commonly searched as a Mercedes-Benz CLA45 AMG high pressure fuel pump, Mercedes-Benz GLA45 AMG GDI pump, and Mercedes-Benz SLK55 AMG right side tank fuel pump.

Common Issues This Part Addresses

• Hard starting caused by insufficient high-pressure fuel delivery
• Fuel pressure loss in direct injection systems
• Engine hesitation or stumble under load
• Fuel delivery faults related to a worn high pressure pump
• Driveability problems tied to inconsistent injector supply pressure

Installation Notes

Verify the vehicle application by year, make, model, and position before installation. This pump is an internal electric unit and does not include gaskets or mounting hardware. Follow factory service procedures for fuel system depressurization, component transfer, and final pressure checks after installation.

Quality Assurance

Bosch builds this pump using OE-level manufacturing and testing standards for long service life and reliable fuel system performance. The Bosch 66820 part number is also referenced by 1330700001 and 1520700601 for the same application.