Replacement DB31450012 In-Tank Fuel Pump Assembly with Sending Unit

The Replacement DB31450012 is a complete in-tank electric fuel pump assembly designed as a direct-fit aftermarket replacement for select BMW 550i, 550i GT, and 550i GT xDrive models. This assembly replaces BMW OEM part number 16117260636 and includes the integrated fuel sending unit for a comprehensive, all-in-one repair solution.

The fuel pump assembly is mounted inside the fuel tank and is responsible for drawing fuel from the tank and delivering it to the engine under consistent pressure. A complete assembly replacement — rather than a pump-only swap — ensures all associated wear components such as the fuel level sensor are refreshed simultaneously.

Key Features:

• Complete fuel pump assembly with integrated fuel level sending unit
• In-tank, electric fuel pump design for quiet, efficient fuel delivery
• Replaces BMW OEM part number: 16117260636
• Direct-fit aftermarket replacement — no modification required
• Restores proper fuel pressure and flow for optimal engine performance

Common Symptoms of a Failing Fuel Pump:

• Engine stalling or difficulty starting
• Loss of power or sluggish acceleration
• Whining or humming noise from the fuel tank area
• Decreased fuel efficiency

OEM / Cross-Reference Part Numbers: BMW 16117260636