Dorman 977-563 Fuel Injection Throttle Body

Overview of the Dorman 977-563 Electronic Throttle Body

The Dorman 977-563 electronic throttle body is designed to provide precise throttle control for select Nissan and Infiniti vehicles. Engineered with a durable aluminum housing and integrated throttle position sensor, this component ensures reliable performance for your fuel injection system.

• Compatible with Nissan and Infiniti models including 350Z, Altima, FX35, FX45, G35, I35, M35, Maxima, Murano, Pathfinder, Q45, and Quest
• Electronic throttle body with built-in throttle position sensor for accurate throttle response
• Aluminum housing for strength and heat resistance
• Non-flanged inlet and outlet with 3.15-inch diameter for seamless integration
• Single inlet and outlet design with blade-type electrical connector and 6 terminals
• Fuel system type: Gasoline
• Throttle body finish in black and gray

Detailed Product Description

The Dorman 977-563 throttle body is a direct replacement part designed to restore proper throttle function in compatible Nissan and Infiniti vehicles. Featuring a 3.15-inch bore diameter and matching inlet and outlet diameters, this throttle body supports smooth airflow and precise fuel delivery. The electronic throttle body type includes an integrated throttle position sensor, which is essential for accurate engine management and throttle response. The aluminum housing provides durability and resistance to heat and corrosion, while the blade-style electrical connector with six terminals ensures secure and reliable electrical connections. This throttle body does not include fuel injectors, idle air control motor, gaskets, or installation hardware, so those components must be sourced separately if needed.

Common Applications and Issues Addressed

• Restores throttle response and engine performance in Nissan 350Z and Infiniti G35 models
• Resolves rough idling or stalling caused by faulty throttle body components
• Corrects throttle position sensor errors that trigger check engine lights
• Improves fuel efficiency and drivability in Nissan Altima and Infiniti FX35 vehicles
• Replaces worn or damaged throttle bodies in Nissan Pathfinder and Infiniti Q45

Installation Notes and Tips

• Ensure the throttle body is compatible with your specific vehicle make and model before installation
• Clean the throttle body mounting surface and intake manifold to prevent air leaks
• Check electrical connections for corrosion or damage and secure the blade-type connector firmly
• Do not reuse old gaskets or seals; source new ones as needed for proper sealing
• After installation, perform a throttle body relearn procedure if required by the vehicle’s ECU

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications, providing reliable performance and durability. The 977-563 electronic throttle body undergoes rigorous quality control to ensure proper fit and function. Please refer to Dorman’s warranty policy for specific coverage details.