Dorman 977-080 Fuel Injection Throttle Body

Reliable Electronic Fuel Injection Throttle Body for Lexus and Toyota

The Dorman 977-080 electronic throttle body is designed to provide precise throttle control for select Lexus and Toyota models. Engineered with durable aluminum housing and integrated throttle position sensor, this component ensures consistent performance for your GX460, Sequoia, or Tundra.

• Compatible with Lexus GX460 and Toyota Sequoia, Tundra models
• Electronic throttle body with integrated throttle position sensor
• Constructed from durable aluminum with black and gray finish
• Inlet diameter of 81.6 mm with flanged inlet type
• Single outlet with 3.38-inch diameter, non-flanged
• Designed for gas fuel injection systems
• Blade-type male electrical connector with 6 terminals
• Includes one electronic throttle body (part number 977-080)

Product Details and Specifications

The Dorman 977-080 throttle body features a 3.2-inch bore diameter and is built specifically for gas fuel injection systems. Its aluminum housing offers durability and heat resistance, while the black and gray finish provides corrosion protection. The throttle body is electronic, incorporating a throttle position sensor to accurately monitor and regulate airflow. It has a single flanged inlet and a non-flanged outlet, designed to fit the air intake system of compatible Lexus and Toyota vehicles. The electrical connection uses a 6-terminal blade-type male connector, ensuring secure and reliable communication with the engine control unit.

Applications and Common Issues Addressed

• Restores proper throttle response and engine acceleration
• Resolves rough idling or stalling caused by faulty throttle bodies
• Eliminates check engine light triggers related to throttle position sensor faults
• Improves fuel efficiency by maintaining accurate air-fuel mixture control
• Replaces worn or damaged throttle bodies in Lexus GX460, Toyota Sequoia, and Tundra

Installation Notes and Tips

Installation of the Dorman 977-080 throttle body requires removal of the existing throttle body from the intake manifold. Ensure the throttle body mounting surface is clean and free of debris before installation. Note that mounting hardware and gaskets are not included and should be reused or replaced as necessary. Proper electrical connection to the vehicle’s wiring harness is essential for throttle position sensor functionality. Calibration or relearn procedures may be required after installation to ensure optimal performance.

Quality Assurance and Warranty

Dorman manufactures the 977-080 throttle body to meet or exceed OEM specifications for fit, form, and function. The aluminum construction and integrated sensors undergo rigorous testing to ensure durability and reliability. While specific warranty details are not provided here, Dorman products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.