Dorman 977-564 Fuel Injection Throttle Body

Overview of Dorman Fuel Injection Throttle Body 977-564

The Dorman 977-564 electronic fuel injection throttle body is designed for precise air and fuel delivery in select BMW models. Engineered with an aluminum housing and integrated throttle position sensor, this throttle body supports efficient engine performance for BMW 330Ci, 330i, 330xi, and 530i vehicles.

• Compatible with BMW 330Ci, 330i, 330xi, and 530i models
• Electronic throttle body with integrated throttle position sensor
• Aluminum housing for durability and heat resistance
• Non-flanged inlet and outlet with 2.898-inch diameter
• Single outlet and inlet design for streamlined fuel delivery
• Black and gray finish for corrosion resistance
• Pin-type electrical connector with 6 terminals
• Designed for gas fuel systems

Technical Details and Features

The Dorman 977-564 throttle body features a 2.677-inch bore diameter optimized for airflow control in gas-fueled engines. Its electronic throttle type ensures precise throttle response, supported by the included throttle position sensor for accurate feedback to the engine control unit. The aluminum housing provides a lightweight yet robust structure, capable of withstanding engine bay conditions. Both the inlet and outlet are non-flanged with matching diameters of 2.898 inches, facilitating straightforward integration with existing fuel injection systems. The electrical connection uses a 6-terminal pin connector, ensuring secure and reliable communication with the vehicle’s electronic systems.

Applications and Problem Resolution

This throttle body is specifically compatible with BMW 330Ci, 330i, 330xi, and 530i models, making it suitable for replacement or upgrade in these vehicles. It addresses common issues such as:

• Erratic or unresponsive throttle control
• Engine stalling or rough idling due to faulty throttle position sensor
• Reduced engine performance from worn or damaged throttle body components
• Check engine light triggered by throttle body malfunctions
• Poor fuel efficiency related to improper air-fuel mixture regulation

Installation Notes and Tips

Installation of the Dorman 977-564 throttle body requires removal of the existing throttle body and careful connection of the 6-pin electrical connector. Since no gasket or seal is included, ensure the use of appropriate seals during installation to prevent air leaks. This throttle body is not adjustable and does not include fuel injectors or idle air control motor, so verify compatibility with your vehicle’s fuel injection system before installation.

Quality Assurance and Warranty

Dorman manufactures this throttle body to meet or exceed OEM specifications, using durable aluminum housing and reliable electronic components. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. For exact warranty terms, consult the product documentation or manufacturer.