Spectra TB1126 Fuel Injection Throttle Body Assembly

Spectra TB1126 Fuel Injection Throttle Body

The Spectra TB1126 fuel injection throttle body assembly is built for OE-level fit and function in electronic throttle control systems. It is a direct replacement for select Lexus applications, including Lexus IS300, IS350, RC300, RC350, GS350, and GS450h models.

Compatible With 2006-2016 Lexus IS350, 2013-2015 Lexus GS350, and other listed Lexus applications, this throttle body assembly supports precise airflow control for drivability and throttle response. Spectra Premium engineers and tests these assemblies to meet original equipment requirements.

Key Features

• Electronic throttle body assembly for fuel injection systems
• OE-style replacement for select Lexus vehicles
• Engineered and tested to meet original equipment requirements
• Direct-fit replacement for common Lexus throttle body service needs
• Cross-references Standard Ignition S20132 and 2203031040

Detailed Description

The Spectra TB1126 is a fuel injection throttle body assembly designed for electronic throttle control on select Lexus models. It is used in applications such as Lexus IS300, Lexus IS350, Lexus RC300, Lexus RC350, Lexus GS350, and Lexus GS450h, with fitment varying by year and build date. This part number, TB1126, is intended as a replacement for the original throttle body assembly where OE-level performance and fit are required.

This part cross-references Standard Ignition S20132 for the same application.

What It Helps Address

• Throttle response issues caused by a worn electronic throttle body
• Idle instability related to airflow control problems
• Driveability concerns from throttle plate or sensor wear
• Check engine light conditions tied to throttle body faults
• Air metering problems affecting engine performance

Installation Notes and Tips

Verify the vehicle build date before ordering, since several Lexus applications list fitment only through 10/2017. Confirm the connector style, throttle body configuration, and OE part number match before installation. After replacement, follow the vehicle manufacturer’s relearn or calibration procedure if required by the engine control system.

Quality Assurance

Spectra Premium states that its electronic throttle bodies are engineered, developed, and rigorously tested to meet OE requirements. The TB1126 is built to meet or exceed the performance of the original equipment it replaces.