Bosch 66852 Direct Injection High Pressure Fuel Pump

Bosch GDI High Pressure Pump for Hyundai and Kia

Bosch GDI High Pressure Pump Part Number 66852 is a direct injection high pressure fuel pump for gasoline applications. It is built on Bosch production lines and tested to Bosch OE-level quality standards for consistent fuel delivery and long service life.

Compatible With 2013-2016 Hyundai Equus, 2015 Kia K900, and 2013-2014 Hyundai Genesis, this Bosch fuel pump supports direct injection systems that require precise high-pressure fuel delivery. The Bosch GDI High Pressure Pump line focuses on premium replacement parts for modern gasoline engines, including applications where accurate metering and dependable pressure are critical.

Key Features

• Direct injection high pressure fuel pump for gasoline engines
• Electric, external, in-line pump design
• Metal and steel housing construction
• Fuel filter and gasket/seal included
• Single female connector with blade terminals
• Quick-connect inlet and compression outlet configuration
• New premium-grade replacement part
• Part Number 66852 for catalog and service reference

Detailed Product Overview

This Bosch GDI High Pressure Pump Part Number 66852 is engineered for fuel injection systems that rely on stable pressure at the pump. It features a 14 mm inlet outside diameter, 14 mm outlet outside diameter, one inlet, one outlet, and a bolt-on mounting style. The pump uses a square/rectangle connector shape, female connector gender, and male terminal gender, with an M16 x 1.5 outlet fitting thread size and quick-connect inlet fitting. The housing is metal with a steel material specification, and the unit is listed as metered for controlled fuel delivery.

For Hyundai Equus, Kia K900, and Hyundai Genesis direct injection service, this pump provides a replacement option that matches the original application style. Bosch manufactures these pumps to the same production and testing standards used for Bosch OE fuel pumps, helping maintain consistent performance in gasoline direct injection systems. This part cross-references Bosch-style OE replacement applications such as 353203F240 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
• Driveability issues related to inconsistent injector supply pressure
• Replacement needs for worn or failing high pressure fuel pump assemblies

Installation Notes and Tips

Verify vehicle application by year, make, and model before installation. This pump is an external, bolt-on electric unit for gasoline direct injection systems, so confirm inlet and outlet connection style, connector shape, and fitting sizes during service. Replace any worn seals during installation and inspect the fuel system for contamination or pressure-related faults before returning the vehicle to service.

Quality Assurance

Bosch builds this GDI High Pressure Pump on the same production lines used for Bosch OE fuel pumps and tests it to the same quality standards. That manufacturing approach supports consistent fitment and dependable service for direct injection fuel system repair.