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Delphi ES20193 Oxygen Sensor - Rear
| Brand | Delphi ES20193 |
|---|---|
| Position | Rear |
| Connector Shape | Square |
| Overall Length | 960.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Toyota · 15 vehicles |
Heated sensor. Delivers faster operation for dependable emissions monitoring.
Square connector. Helps ensure a secure, straightforward electrical connection.
OE heritage. Built with 100 years of OE experience and supplier knowledge.
Cross-references BBB Industries 13986, BBB Industries 13989 and Bosch 15210 for the same application. See all 42.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Delphi Rear Oxygen Sensor for Tacoma
Delphi ES20193 is a heated rear oxygen sensor built with OE heritage and the engineering knowledge Delphi brings from supplying major automakers. It is a direct-fit emission control sensor for select Toyota Tacoma applications, including 2001-2004 Tacoma rear and 2000 Tacoma rear with California Emission System.
Key Features
- Heated oxygen sensor design for rear exhaust monitoring
- 4-wire configuration with square connector shape
- 18 x 1.5 mm thread size for the specified application
- Overall length: 960.0
- Includes oxygen sensor and instruction sheet
- Position: rear
Detailed Description
The Delphi ES20193 oxygen sensor is engineered for rear exhaust placement and is built to match the needs of the listed Toyota Tacoma fitments. As a heated sensor, it helps the engine management system monitor exhaust oxygen content after the catalytic converter, supporting accurate emissions feedback and proper fuel control strategy. This part number, ES20193, is a practical OE-style replacement for Tacoma owners addressing rear sensor service on 2001-2004 models and 2000 California Emission System applications.
This part cross-references DENSO Auto Parts (e.g., 234-4189) for the same application.
What It Helps Address
- Check engine light related to rear oxygen sensor performance
- Fault codes tied to catalyst efficiency monitoring
- Rough emissions feedback from a worn rear sensor
- Delayed or inaccurate exhaust oxygen readings
- Failed emissions inspection caused by sensor degradation
Installation Notes and Tips
Install ES20193 in the rear sensor location only, using the correct 18 x 1.5 mm thread engagement and square connector style for the vehicle harness. Verify the vehicle is a compatible Toyota Tacoma application before installation, including 2000 Tacoma rear with California Emission System and 2001-2004 Tacoma rear. Inspect the exhaust bung and wiring routing before final tightening to avoid connector strain or thread damage.
Quality Assurance
Delphi draws on more than a century of OE experience and supplier knowledge from working with leading automakers. That OE background is built into this aftermarket oxygen sensor to support consistent fit and function for the listed Tacoma applications.
| Year | Make | Model | Body Type | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Toyota | Tacoma | — | — | Rear | — |
| 2004 | Toyota | Tacoma | Standard Cab Pickup | — | Rear | — |
| 2004 | Toyota | Tacoma | Extended Cab Pickup | — | Rear | — |
| 2003 | Toyota | Tacoma | — | — | Rear | — |
| 2003 | Toyota | Tacoma | Standard Cab Pickup | — | Rear | — |
| 2003 | Toyota | Tacoma | Extended Cab Pickup | — | Rear | — |
| 2002 | Toyota | Tacoma | — | — | Rear | — |
| 2002 | Toyota | Tacoma | Standard Cab Pickup | — | Rear | — |
| 2002 | Toyota | Tacoma | Extended Cab Pickup | — | Rear | — |
| 2001 | Toyota | Tacoma | — | — | Rear | — |
| 2001 | Toyota | Tacoma | Standard Cab Pickup | — | Rear | — |
| 2001 | Toyota | Tacoma | Extended Cab Pickup | — | Rear | — |
| 2000 | Toyota | Tacoma | — | RWD | Rear | with California Emission System |
| 2000 | Toyota | Tacoma | Standard Cab Pickup | 4WD | Rear | with California Emission System |
| 2000 | Toyota | Tacoma | Standard Cab Pickup | — | Rear | with California Emission System |
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