Bosch 66805 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump for Audi and VW

The Bosch 66805 is a direct injection high pressure fuel pump built for select Audi and Volkswagen applications. It is an electric, internal fuel pump with one outlet and a new construction, making it a direct replacement option for GDI fuel system service on Audi A3, Volkswagen Beetle, and Volkswagen Jetta models.

Bosch’s GDI High Pressure Pump line brings OE-style fuel system engineering to the aftermarket. These pumps are produced and tested to the same quality standards Bosch uses for original equipment fuel pumps, helping maintain consistent fuel delivery in direct injection systems.

Key Features

• Direct injection high pressure fuel pump for GDI fuel systems
• Electric, internal pump design
• New unit with one outlet
• Brand line: Bosch GDI High Pressure Pump (New)
• Cross-reference: 06K127026C
• Fits select Audi A3, Volkswagen Beetle, and Volkswagen Jetta applications
• Bosch part number 66805

Detailed Description

Use Bosch 66805 when replacing a worn or failing high pressure pump in a gasoline direct injection system. This pump is engineered for the fuel pressure demands of modern GDI engines and is listed for 2015-2016 Audi A3, 2013-2015 Volkswagen Beetle, and 2013-2014 Volkswagen Jetta applications. If you are searching for a Bosch high pressure fuel pump for Audi A3 2015-2016 or a Volkswagen Beetle/Jetta GDI pump, this part number is the relevant OE-style replacement reference.

The Bosch GDI High Pressure Pump (New) product line focuses on premium fuel delivery components for the aftermarket, with manufacturing and testing aligned to Bosch original equipment standards. That makes Bosch 66805 a practical choice for restoring proper high-pressure fuel supply in direct injection engines.

What It Helps Address

• Hard starting caused by low high-pressure fuel delivery
• Fuel pressure loss in a direct injection system
• Engine hesitation or stumble under load
• Driveability issues tied to a failing GDI pump
• Fuel system faults related to pump wear

Installation Notes and Tips

Confirm engine code and VIN match before ordering, since fitment varies by model year and production date. This pump is an internal, electric high pressure unit and does not include mounting hardware or gaskets. Follow factory service procedures for fuel system depressurization, cleanliness, and final pressure verification after installation.

Quality Assurance

Bosch manufactures and tests these fuel pumps to rigorous OE-level standards used for original equipment components. The result is a new Bosch 66805 pump built for reliable service in direct injection applications, with the same engineering approach Bosch applies across its premium fuel delivery lineup.