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Delphi ES20184 Oxygen Sensor - Rear
| Brand | Delphi ES20184 |
|---|---|
| Position | Rear |
| Sensor Type | Heated |
| Wire Quantity | 4 |
| Connector Shape | Square |
| Thread Size | 18 x 1.5 mm |
| Overall Length | 670.0 |
| Package Contents | Oxygen sensor, instruction sheet |
| Fits | Mercury and Nissan · 8 vehicles |
Heated sensor. Built for faster operation and stable emissions monitoring.
Square connector. Simplifies a secure, straightforward electrical connection.
OE heritage. Backed by a century of original-equipment experience.
Cross-references Bosch 15769, Bosch 15959 and DENSO Auto Parts 234-4701 for the same application. See all 28.
Delphi ES20184 Rear Oxygen Sensor
The Delphi ES20184 is a heated rear oxygen sensor built for emission control service on select Mercury Villager and Nissan Quest applications. It uses OE-based engineering and fitment details to support accurate exhaust monitoring on the listed vehicles.
Key Features
- Heated oxygen sensor for rear position applications
- 4-wire design with square connector shape
- 18 x 1.5 mm thread size
- Overall length: 670.0
- Package contents: oxygen sensor and instruction sheet
- Delphi part number ES20184
Application Details
Compatible with 2001-2002 Mercury Villager, rear, and 2001-2002 Nissan Quest, rear. It also fits 1999-2000 Mercury Villager, rear, with California Emission System, and 1999-2000 Nissan Quest, rear, with California Emission System. For shoppers searching for a rear oxygen sensor for Mercury Villager or Nissan Quest, Delphi ES20184 matches the listed OE-style applications.
Delphi draws on more than a century of OE experience and supplier knowledge used by major automakers. That background is built into this aftermarket oxygen sensor to support the specified rear-position fitments.
What This Sensor Helps Address
- Check engine light related to rear O2 sensor performance
- Incorrect exhaust oxygen readings at the rear sensor location
- Emission control faults on listed Mercury Villager and Nissan Quest models
- Driveability issues tied to aging heated oxygen sensor response
Installation Notes
Confirm the rear sensor location, connector shape, wire count, and thread size before installation. Compare the removed sensor to Delphi ES20184 to verify length and connector style, especially on California Emission System vehicles. This part cross-references Bosch 15769 and DENSO Auto Parts 234-4701 for the same application.
Quality Assurance
Delphi builds this oxygen sensor using OE heritage and application knowledge developed through long-term supplier experience with top automakers. The included instruction sheet supports installation and fitment verification.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2002 | Mercury | Villager | Rear | — |
| 2002 | Nissan | Quest | Rear | — |
| 2001 | Mercury | Villager | Rear | — |
| 2001 | Nissan | Quest | Rear | — |
| 2000 | Mercury | Villager | Rear | with California Emission System |
| 2000 | Nissan | Quest | Rear | with California Emission System |
| 1999 | Mercury | Villager | Rear | with California Emission System |
| 1999 | Nissan | Quest | Rear | with California Emission System |
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