HomeEmission Control > SensorsDelphi ES20193 Oxygen Sensor - Rear
Part #: ES20193

Delphi ES20193 Oxygen Sensor - Rear

Rear
15 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Toyota, Tacoma
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Overview of Delphi ES20193 Oxygen Sensor for Toyota Tacoma

The Delphi ES20193 is a heated oxygen sensor designed specifically for the rear position on Toyota Tacoma models. This sensor helps maintain optimal engine performance and emissions control by accurately monitoring exhaust gases.

  • Heated oxygen sensor type for faster response times
  • Four-wire design ensuring reliable electrical connections
  • Square connector shape for secure fitment
  • Thread size of 18 x 1.5 mm compatible with Toyota Tacoma exhaust systems
  • Overall length of 960 mm for proper installation
  • Includes oxygen sensor and instruction sheet for installation guidance

Detailed Product Description

The Delphi ES20193 oxygen sensor is engineered to meet the specific requirements of Toyota Tacoma vehicles. Featuring a heated sensor element, it quickly reaches operating temperature to provide accurate oxygen level readings. The four-wire configuration supports both the sensor signal and heater circuit, improving sensor responsiveness and durability. Its square connector shape ensures a secure and precise connection to the vehicle’s wiring harness, while the 18 x 1.5 mm thread size matches the factory specifications for rear exhaust placement. With an overall length of 960 mm, this sensor fits seamlessly into the exhaust system without modification.

Common Applications and Issues Addressed

  • Helps reduce emissions by providing accurate air-fuel mixture data
  • Prevents engine performance issues related to faulty oxygen sensors
  • Resolves check engine light triggers caused by rear oxygen sensor faults
  • Improves fuel efficiency by enabling proper engine tuning
  • Supports compliance with emissions regulations for Toyota Tacoma vehicles

Installation Notes and Tips

  • Ensure the vehicle is cool before sensor removal to avoid burns
  • Use the included instruction sheet for proper installation steps
  • Apply anti-seize compound to the sensor threads if recommended
  • Verify connector shape matches the vehicle harness before installation
  • Torque sensor to manufacturer specifications to prevent leaks

Quality Assurance and Warranty

Delphi oxygen sensors are manufactured to meet OEM standards for fit, form, and function. The ES20193 part number undergoes rigorous testing to ensure durability and accurate performance in Toyota Tacoma applications. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship to provide confidence in product reliability.

BrandDelphi
Part NumberES20193
Connector ShapeSquare
Overall Length960.0
Package ContentsOxygen Sensor, Instruction Sheet
Position(s)Rear
Sensor TypeHeated
Thread Size18 x 1.5 mm
Wire Quantity4

This part fits 15 vehicles. Search below:

YearMakeModelBody TypeDrive TypePositionNotes
2004ToyotaTacomaRear
2004ToyotaTacomaStandard Cab PickupRear
2004ToyotaTacomaExtended Cab PickupRear
2003ToyotaTacomaRear
2003ToyotaTacomaStandard Cab PickupRear
2003ToyotaTacomaExtended Cab PickupRear
2002ToyotaTacomaRear
2002ToyotaTacomaStandard Cab PickupRear
2002ToyotaTacomaExtended Cab PickupRear
2001ToyotaTacomaRear
2001ToyotaTacomaStandard Cab PickupRear
2001ToyotaTacomaExtended Cab PickupRear
2000ToyotaTacomaRWDRearwith California Emission System
2000ToyotaTacomaStandard Cab Pickup4WDRearwith California Emission System
2000ToyotaTacomaStandard Cab PickupRearwith California Emission System

* 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:

136181398613989152101541415415154162131434213143521314362131440234-4189245592502415989465-0925089465-0928089465-0933089465-0934089465-0935089465-0936089465-09370OS1536OS1538OS1542OS1586OS1596OS1598OS1600REA1186SG782SG784SG788SG832SG842SG844SG846SU5655SU5656SU5676SU6727SU6728SU6729

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