Bosch 66803 Direct Injection High Pressure Fuel Pump

Overview of Bosch GDI High Pressure Pump (New)

The Bosch GDI High Pressure Pump (New) is designed to deliver precise fuel pressure for direct injection systems in select BMW models. Engineered as a new, electric internal pump, it supports optimal engine performance and fuel efficiency.

• Brand: Bosch
• Brand Line: GDI High Pressure Pump (New)
• Part Number: 66803
• Type: Direct Injection High Pressure Fuel Pump
• Electric operation, internal mounting
• Includes 1 high pressure pump per package
• Compatible with multiple BMW models including 550i, 650i, 750i, X5, and X6

Product Line Details: Bosch GDI High Pressure Pump (New)

The Bosch GDI High Pressure Pump (New) line focuses on delivering reliable, high-pressure fuel delivery solutions for gasoline direct injection engines. This product line emphasizes new, electric pumps designed for internal installation, ensuring consistent fuel pressure and engine responsiveness. The 66803 pump is part of this line, tailored for BMW vehicles requiring precise fuel metering under high pressure conditions.

Detailed Product Description

This Bosch direct injection high pressure fuel pump (part number 66803) is an electric, internally mounted unit designed specifically for BMW models such as the 550i, 550i GT, 650i, 750i, and SUVs like the X5 and X6. It features a single outlet and does not include gaskets or mounting hardware, allowing for straightforward replacement in compatible vehicles. The pump is new, not remanufactured, ensuring original equipment quality and performance standards.

Common Applications and Issues Addressed

• Restores proper fuel pressure in direct injection systems
• Resolves engine hesitation or stalling related to fuel delivery
• Eliminates rough idling caused by inconsistent fuel supply
• Addresses fuel pump failure symptoms in BMW 550i, 650i, 750i, X5, and X6 models
• Improves overall engine performance and fuel efficiency

Installation Notes and Tips

• Designed for internal mounting; ensure proper access to fuel system
• Verify compatibility with specific BMW model and year before installation
• Replacement requires removal of the old pump; no mounting hardware included
• Check fuel system seals and lines during installation (gaskets not included)
• Follow manufacturer torque specifications and safety procedures

Quality Assurance and Warranty

As a new Bosch part, the GDI High Pressure Pump (part number 66803) meets OEM standards for fit, form, and function. Bosch is known for stringent quality control in fuel system components. Warranty coverage details should be confirmed with the point of purchase or Bosch directly, as it may vary by region and distributor.