Standard Ignition S20478 Fuel Injection Throttle Body

Electronic Throttle Body for Hyundai and Kia

Standard Ignition S20478 is a fuel injection throttle body assembly for select Hyundai Sonata and Kia Optima applications. It includes the electronic throttle body seal and throttle position sensor, and it requires a factory relearn procedure after installation.

• Electronic throttle body assembly with seal included
• Throttle position sensor included
• Female connector with 1 connector and 6 male blade terminals
• No fuel injectors included
• No idle air control motor included
• Relearn required for installation

Application Details

Compatible with 2011-2015 Hyundai Sonata and 2011-2012 Kia Optima, this Standard Ignition throttle body is built for vehicles that need precise electronic airflow control at the intake. It also fits 2014-2016 Kia Optima applications with factory relearn procedure required. The S20478 is a direct replacement option for restoring throttle response and maintaining proper engine management on these Hyundai and Kia models.

This part cross-references OE-style numbers such as 351002G800 and ETB808 for the same application.

Common Uses

• Throttle response issues caused by a worn electronic throttle body
• Idle instability related to throttle plate control
• Check engine lights tied to throttle body or TPS faults
• Airflow control problems affecting acceleration and drivability
• Replacement after contamination or internal electronic failure

Installation Notes

Verify connector style, terminal layout, and seal condition before installation. The included throttle body seal supports proper sealing at the intake connection. A factory relearn procedure is required after installation on listed Hyundai Sonata and Kia Optima applications, so follow OEM service steps to complete setup correctly.

Quality Assurance

Standard Ignition supplies replacement engine management components for service applications, and this S20478 throttle body is built to match the listed fitment and electrical configuration for the specified Hyundai and Kia vehicles.