Bosch 66830 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump 66830

Bosch GDI High Pressure Pump 66830 is a new direct injection high pressure fuel pump for gasoline applications. It is built for Volkswagen Golf, Jetta, Beetle, Passat, Golf SportWagen, and Golf Alltrack models that require a Bosch-style OE replacement for the high-pressure side of the fuel system.

Bosch’s GDI High Pressure Pump line is engineered for the demands of gasoline direct injection systems, with production and testing standards aligned to Bosch OE fuel pump manufacturing. Part number 66830 is a premium, electric, external in-line pump with a metal housing, integrated filter, and a single square/rectangle female connector.

Key Features

• Direct injection high pressure fuel pump for gas engines
• New Bosch premium replacement, part number 66830
• External, in-line electric pump with bolt-on mounting
• Metal housing with steel construction
• Single outlet design with compression outlet type
• Integrated filter and included gasket and O-ring
• Female connector with male blade terminals
• Fuel injection delivery for precise pressure control

Detailed Description

Bosch 66830 is a direct injection high pressure fuel pump designed for gasoline fuel systems that rely on stable pressure delivery at the engine. It features a 14 mm inlet and 14 mm outlet, an M16 x 1.5 outlet fitting thread size, and a threaded or quick-connect inlet type with barb-style inlet fitting thread size. The pump uses a battery-powered electrical design and a fixed nozzle configuration, with metered fuel delivery for controlled operation.

This Bosch GDI High Pressure Pump application is listed for 2014-2018 Volkswagen Jetta, 2014-2017 Volkswagen Beetle, 2014-2017 Volkswagen Passat, 2015-2018 Volkswagen Golf, 2015-2019 Volkswagen Golf SportWagen, and 2017-2019 Volkswagen Golf Alltrack. If you are searching for a Bosch 66830 fuel pump for Volkswagen Golf or a direct injection high pressure fuel pump for Volkswagen Jetta, this part matches those confirmed applications.

This part cross-references URO 06A127026H for the same application.

What It Helps Address

• Hard starting caused by insufficient high-side fuel pressure
• Fuel delivery issues in gasoline direct injection systems
• Pressure loss that can trigger drivability complaints
• Rough running related to inconsistent pump output
• Replacement needs for worn or failing OE-style high pressure pumps

Installation Notes and Tips

Verify the inlet and outlet sizes, connector style, and mounting layout before installation. This pump is external and bolt-on, so confirm the fuel line routing and electrical connection match the vehicle’s original configuration. Replace seals only with the included gasket and O-ring where applicable, and inspect surrounding fuel system components for wear or contamination before returning the vehicle to service.

Quality Assurance

Bosch manufactures this pump on the same production lines used for Bosch OE fuel pumps and tests it to the same quality standards. That OE-level manufacturing approach supports consistent fit and long service life in direct injection fuel systems.