Standard Ignition S3171 Oxygen Sensor Connector

Brand Standard Ignition S3171
Bend Angle (Deg.) 0
Connector Gender Female
Connector Quantity 1
Connector Shape Square
Gauge 18
Harness Length (mm.) 450
Harness Length - cm 45
Harness Length - inches 18
Housing Length (in) 1 1/2
Terminal Gender Male
Terminal Quantity 4
Terminal Type Blade
Wire Quantity 4
Fits Lexus, Mitsubishi, Pontiac, and Toyota · 35 vehicles

Direct connector replacement. Female square connector with 4 blade terminals for a secure electrical connection.

Prewired harness included. 18-inch harness gives you a ready-to-install repair section.

4-wire design. Matches common oxygen sensor wiring needs with 18-gauge conductors.

Cross-references Power Train PT3946, Standard Ignition S3171 and CONB10901 for the same application. See all 4.

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Oxygen Sensor Connector for Toyota, Lexus, Pontiac, and Mitsubishi

Standard Ignition S3171 is a female oxygen sensor connector built for downstream sensor service on select Toyota, Lexus, Pontiac, and Mitsubishi applications. It uses a square connector housing with a 4-blade male terminal layout and 18-gauge wiring for direct electrical repair work.

Key Features

  • Female oxygen sensor connector with square housing
  • 4 terminal blade design with 4-wire configuration
  • 18-gauge harness construction
  • 450 mm harness length for routing flexibility
  • 0-degree bend angle
  • Fits downstream sensor applications on select Corolla, Matrix, SC430, Vibe, and Outlander models

Detailed Description

Standard Ignition S3171 is an oxygen sensor connector for downstream sensor circuits where the original connector is damaged, heat affected, or no longer making a secure electrical connection. The 1 1/2-inch housing length and square connector shape support a clean repair at the sensor harness interface. This part cross-references EC3196 and PT3946 for the same application. Standard Ignition S3171 is listed for 2003-2009 Toyota Corolla, 2011-2013 Toyota Corolla, 2003-2008 Toyota Matrix, 2010-2013 Toyota Matrix, 2006-2010 Lexus SC430, 2003-2008 Pontiac Vibe, and 2003-2006 Mitsubishi Outlander downstream sensor locations.

What It Helps Repair

  • Broken or cracked oxygen sensor connector housings
  • Intermittent downstream O2 sensor signal loss
  • Corrosion at the sensor connector terminals
  • Heat-damaged wiring at the exhaust-side harness
  • Check engine light concerns related to poor sensor connection

Installation Notes and Tips

Verify the connector shape, terminal style, and wire count against the original part before installation. Match the downstream sensor location and route the 450 mm harness to avoid contact with hot exhaust components or moving parts. Confirm secure terminal engagement after splicing or repair work, and inspect the surrounding harness for additional heat damage.

Quality Assurance

Standard Ignition S3171 is built to match the electrical connector requirements of the listed applications and supports repair of the original oxygen sensor circuit on compatible Toyota Corolla, Toyota Matrix, Lexus SC430, Pontiac Vibe, and Mitsubishi Outlander vehicles.

This part fits 35 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypeLitersCylindersNotes
2013ToyotaCorolla1.8LL4Downstream Sensor
2013ToyotaMatrixDownstream Sensor
2012ToyotaCorolla1.8LL4Downstream Sensor
2012ToyotaMatrixDownstream Sensor
2011ToyotaCorolla1.8LL4Downstream Sensor
2011ToyotaMatrixDownstream Sensor
2010LexusSC430Downstream Sensor
2010ToyotaMatrix1.8LL4Downstream Sensor
2009LexusSC430Downstream Sensor
2009ToyotaCorolla1.8LL4Downstream Sensor
2008LexusSC430Downstream Sensor
2008PontiacVibe1.8LL4Downstream Sensor
2008ToyotaCorolla1.8LL4Downstream Sensor
2008ToyotaMatrix1.8LL4Downstream Sensor
2007LexusSC430Downstream Sensor
2007PontiacVibe1.8LL4Downstream Sensor
2007ToyotaCorolla1.8LL4Downstream Sensor
2007ToyotaMatrix1.8LL4Downstream Sensor
2006LexusSC430Downstream Sensor
2006MitsubishiOutlanderAWD
2006PontiacVibe1.8LL4Downstream Sensor
2006ToyotaCorolla1.8LL4Downstream Sensor
2006ToyotaMatrix1.8LL4Downstream Sensor
2005MitsubishiOutlanderAWD
2005PontiacVibe1.8LL4Downstream Sensor
2005ToyotaCorolla1.8LL4Downstream Sensor
2005ToyotaMatrix1.8LL4Downstream Sensor
2004MitsubishiOutlanderAWD
2004PontiacVibe1.8LL4Downstream Sensor
2004ToyotaCorolla1.8LL4Downstream Sensor
2004ToyotaMatrix1.8LL4Downstream Sensor
2003MitsubishiOutlanderAWD
2003PontiacVibe1.8LL4Downstream Sensor
2003ToyotaCorolla1.8LL4Downstream Sensor
2003ToyotaMatrix1.8LL4Downstream Sensor
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Power Train — PT3946Standard Ignition — S3171CONB10901EC3196