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Delphi ES20411 Oxygen Sensor - Rear
| Brand | Delphi ES20411 |
|---|---|
| Position | Rear |
| Connector Shape | Square |
| Overall Length | 850.0 |
| Package Contents | Oxygen Sensor, Instruction Sheet |
| Sensor Type | Heated |
| Thread Size | 18 x 1.5 mm |
| Wire Quantity | 4 |
| Fits | Honda · 13 vehicles |
Heated sensor. Provides faster operation for more responsive emissions monitoring.
Square connector. Simplifies hookup with a straightforward, secure connection.
OE heritage. Built with 100 years of OE experience and supplier knowledge.
Cross-references AP Exhaust 18035, DENSO Auto Parts 234-4218 and DENSO Auto Parts 234-4219 for the same application. See all 12.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Rear Heated Oxygen Sensor for Honda Fit, CR-Z, Insight
Delphi ES20411 is a rear heated oxygen sensor built for direct replacement on select Honda applications. It combines OE-based engineering with the correct connector, thread size, and wire configuration for a straightforward service part match.
Key Features
- Heated oxygen sensor for rear exhaust monitoring
- 4-wire design with square connector shape
- 18 x 1.5 mm thread size for proper exhaust fitment
- 850.0 overall length
- Includes oxygen sensor and instruction sheet
- Fits 2011-2016 Honda CR-Z, rear
- Fits 2009-2013 Honda Fit, rear
- Fits 2010-2011 Honda Insight, rear
Detailed Description
Delphi ES20411 is an emission control oxygen sensor for the rear position on select Honda vehicles, including the Honda Fit, Honda CR-Z, and Honda Insight. Delphi draws on OE heritage and supplier experience with major automakers, bringing factory-informed design and application matching to this aftermarket replacement. This part cross-references DENSO Auto Parts (e.g., 234-4218, 234-4219) for the same application.
Common Issues This Part Can Address
- Check engine light related to rear oxygen sensor performance
- Incorrect air-fuel ratio readings from a worn sensor
- Slow sensor response during closed-loop operation
- Emission test failures tied to rear sensor faults
- Damaged connector, wiring, or sensor element on the original unit
Installation Notes and Tips
Verify rear-position placement before installation and confirm the 18 x 1.5 mm thread size matches the exhaust bung. Compare the square connector and 4-wire layout to the original sensor, and route the harness to avoid heat and abrasion. Use the included instruction sheet during installation and clear diagnostic trouble codes after replacement if required.
Quality Assurance
Delphi builds this oxygen sensor using OE experience and application knowledge developed through years of supplying top automakers. That OE-based approach supports consistent fitment and dependable sensor replacement for the listed Honda applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Honda | CR-Z | 1.5L | L4 | Rear | — |
| 2015 | Honda | CR-Z | 1.5L | L4 | Rear | — |
| 2014 | Honda | CR-Z | 1.5L | L4 | Rear | — |
| 2013 | Honda | CR-Z | 1.5L | L4 | Rear | — |
| 2013 | Honda | Fit | — | — | Rear | — |
| 2012 | Honda | CR-Z | 1.5L | L4 | Rear | — |
| 2012 | Honda | Fit | — | — | Rear | — |
| 2011 | Honda | CR-Z | — | — | Rear | — |
| 2011 | Honda | Fit | — | — | Rear | — |
| 2011 | Honda | Insight | — | — | Rear | — |
| 2010 | Honda | Fit | — | — | Rear | — |
| 2010 | Honda | Insight | — | — | Rear | — |
| 2009 | Honda | Fit | — | — | Rear | — |
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