HomeAir and Fuel Delivery > Fuel Injection System and Related ComponentsStandard Ignition S20459 Fuel Injection Throttle Body
Part #: S20459

Standard Ignition S20459 Fuel Injection Throttle Body

14 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$782.10Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, 3, CX-3, and CX-5
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Electronic Throttle Body for Mazda Applications

Standard Ignition S20459 is an electronic fuel injection throttle body assembly for select Mazda vehicles. It includes the throttle body gasket and throttle position sensor, and it is listed for Mazda 3, CX-3, and CX-5 applications with a factory relearn procedure required after installation.

Key Features

  • Electronic throttle body assembly for fuel injection systems
  • Includes throttle body gasket and throttle position sensor
  • Female connector with 1 connector and 6 male blade terminals
  • Direct-fit replacement for select Mazda 3, Mazda CX-3, and Mazda CX-5 models
  • Standard Ignition S20459 cross-references OE-style replacement numbers for the same application

Product Details

This Standard Ignition throttle body is built for electronic throttle control in compatible Mazda fuel injection systems. The S20459 is listed with a gasket or seal included, while mounting hardware, fuel injectors, idle air control motor, and throttle body spacer are not included. It is a practical replacement for drivability issues tied to throttle response and airflow control on 2012-2018 Mazda 3, 2016-2018 Mazda CX-3, and 2013-2016 Mazda CX-5 models.

This part cross-references ETB794 and ETBB10157 for the same application.

What It Is Used For

  • Restoring throttle response on Mazda 3, CX-3, and CX-5 vehicles
  • Addressing electronic throttle body wear or internal sensor faults
  • Correcting idle quality concerns related to throttle control
  • Replacing a contaminated or sticking throttle body assembly
  • Resolving throttle-related warning lights after component failure

Installation Notes and Tips

Fits 2012-2018 Mazda 3, N/A. Fits 2016-2018 Mazda CX-3, N/A. Fits 2013-2016 Mazda CX-5, N/A. Factory relearn procedure required for installation. Verify connector style, terminal count, and OE part number before installation. Clean mating surfaces and install the included gasket to help ensure proper sealing.

Quality Assurance

Standard Ignition replacement parts are built for service applications that require accurate fit and function. This S20459 throttle body is supplied as an electronic throttle body assembly with the listed sensor and seal components for the specified Mazda fitments.

BrandStandard Ignition
Part NumberS20459
Mounting Hardware IncludedNo
Gasket Or Seal IncludedYes
Fuel Injectors IncludedNo
Idle Air Control Motor IncludedNo
Idle Air Control Motor IncludedYes
AdjustableNo
Connector GenderFemale
Connector Quantity1
ContentsElectronic throttle body, electronic throttle body gasket
Hardware IncludedSeals
NotesRelearn required for installation
Terminal GenderMale
Terminal Quantity6
Terminal TypeBlade
Throttle Body Spacer IncludedNo
Throttle Position Sensor IncludedYes

This part fits 14 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2018Mazda3N/AFactory Relearn Procedure Required
2018MazdaCX-3N/AFactory Relearn Procedure Required
2017Mazda3N/AFactory Relearn Procedure Required
2017MazdaCX-3N/AFactory Relearn Procedure Required
2016Mazda3N/AFactory Relearn Procedure Required
2016MazdaCX-3N/AFactory Relearn Procedure Required
2016MazdaCX-52.0LL4N/AFactory Relearn Procedure Required
2015Mazda3N/AFactory Relearn Procedure Required
2015MazdaCX-52.0LL4N/AFactory Relearn Procedure Required
2014Mazda3N/AFactory Relearn Procedure Required
2014MazdaCX-5N/AFactory Relearn Procedure Required
2013Mazda3i2.0LL4N/AFactory Relearn Procedure Required
2013MazdaCX-5N/AFactory Relearn Procedure Required
2012Mazda32.0LL4N/AFactory Relearn Procedure Required

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

ETB794ETBB10157PE0113640S20459

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.