Dorman 977-856 Fuel Injection Throttle Body

Dorman 977-856 Electronic Throttle Body

Dorman 977-856 is a direct-fit electronic throttle body for select Lexus applications, including the 2006 Lexus GS300 and 2006-2015 Lexus IS250. It replaces the original throttle body with an OE-style fit and electronic control for consistent throttle response.

Key Features

• Electronic throttle body with integrated throttle position sensor
• Idle air control motor included for proper idle management
• Corrosion-resistant aluminum housing with black finish
• Flanged inlet and outlet design for OE-style mounting
• 100% new construction with a new sensor and circuit board
• Gas fuel system application
• Blade-style 6-terminal electrical connection

Detailed Description

This Dorman throttle body is built as a direct replacement for the factory electronic unit on Lexus IS250 and Lexus GS300 models listed in the fitment data. Part number 977-856 uses a corrosion-resistant aluminum body and a new internal sensor and circuit board to restore accurate throttle control, idle stability, and electronic signal response. The flanged inlet and outlet dimensions support OE-style installation, while the mounted throttle body design helps maintain the original configuration.

This part cross-references Standard Ignition S20130 for the same application.

What It Helps Fix

• Throttle response problems caused by a worn electronic throttle body
• Idle instability related to throttle plate or sensor wear
• Driveability issues from inconsistent throttle signal output
• Check engine light conditions tied to throttle body performance
• Airflow control problems on Lexus IS250 and Lexus GS300 models

Installation Notes and Tips

Verify the inlet diameter, outlet diameter, connector style, and electronic throttle body type before installation. This unit does not include a gasket or seal, and installation hardware is not included. After installation, follow the vehicle-specific relearn or calibration procedure required for electronic throttle systems.

Quality Assurance

Dorman 977-856 is a 100% new replacement part built to match original equipment fit and performance requirements for the listed Lexus applications. The updated sensor and circuit board support reliable electronic operation in daily driving conditions.