Walker 550-2040 Fuel Injector

Walker 550-2040 Fuel Injector for BMW Applications

Walker Products fuel injector 550-2040 is built for direct replacement service on select BMW fuel injection applications. It is a fitment-based solution for restoring proper fuel delivery on 1999-2003 BMW 540i, 2000-2003 BMW X5, 2003 BMW Z8, 1999-2001 BMW 740i, and 1999-2001 BMW 740iL.

Key Features

• Fuel injector for select BMW 540i, X5, Z8, 740i, and 740iL applications
• Walker Products part number 550-2040
• Built to meet or exceed OEM standards and specifications
• Supported by Walker Products engineering, product management, and manufacturing resources
• ISO 9001 and IATF16949 certified manufacturing environment

Product Details

Walker Products has supplied fuel system components since 1946, with a focus on accurate application coverage and technical support for the automotive aftermarket. The 550-2040 fuel injector is part of the Walker Products fuel injection lineup and is intended for direct-fit service on the listed BMW models. For buyers searching for a BMW 540i fuel injector, BMW X5 fuel injector, or BMW 740i fuel injector, this part number provides a targeted replacement option backed by Walker’s fuel system experience.

This part cross-references Bosch 62681 for the same application.

Common Issues This Part May Address

• Rough idle caused by inconsistent fuel delivery
• Hard starting related to injector wear or clogging
• Misfire conditions tied to poor atomization
• Fuel trim imbalance from a weak or leaking injector
• Reduced engine performance from restricted injector flow

Installation Notes and Tips

Verify the vehicle application by year, make, and model before installation. Inspect the fuel rail, seals, and electrical connector condition during service, and confirm the injector is matched to the correct BMW application listed above. After installation, check for fuel leaks and clear any stored diagnostic trouble codes as needed.

Quality Assurance

Walker Products manufactures fuel system components to meet or exceed OEM standards and specifications. The company supports production with in-house engineering, product management, and technical documentation, and operates under ISO 9001 and IATF16949 certification.