Standard Ignition S20478 Fuel Injection Throttle Body
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Standard Ignition

Standard Ignition S20478 Fuel Injection Throttle Body

Brand Standard Ignition S20478
Mounting Hardware Included No
Gasket Or Seal Included Yes
Fuel Injectors Included No
Idle Air Control Motor Included No
Connector Gender Female
Connector Quantity 1
Contents Electronic throttle body, electronic throttle body seal
Hardware Included Seals
Notes Relearn required for installation
Terminal Gender Male
Terminal Quantity 6
Terminal Type Blade
Throttle Body Spacer Included No
Throttle Position Sensor Included Yes
Fits Hyundai and Kia · 10 vehicles

Electronic throttle body. Includes a throttle position sensor for precise throttle control.

Seal included. Comes with an electronic throttle body seal for a cleaner install.

Relearn required. Installation requires a throttle relearn procedure.

Cross-references Standard Ignition S20478, 351002G800 and ETB808 for the same application. See all 4.

$234.27Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Fuel Injection Throttle Body options

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.

Related reading

This part fits 10 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypeNotes
2016KiaOptima2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2015HyundaiSonata2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2015KiaOptima2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2014HyundaiSonata2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2014KiaOptima2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2013HyundaiSonata2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2012HyundaiSonata2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2012KiaOptima2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2011HyundaiSonata2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
2011KiaOptima2.4LL4FULL HYBRID EV-GAS (FHEV)Factory Relearn Procedure Required
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Standard Ignition — S20478351002G800ETB808ETBB10171