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Denso 234-4052 Oxygen Sensor - Downstream or Upstream
| Brand | Denso CF-44 |
|---|---|
| LineCode | ATP |
| Product line | OE Style |
| Fits | —22 vehicles |
OE style replacement. Precision-built for an exact, first-time fit.
Heated sensor. Helps deliver faster response and stable operation.
Aluminum oxide trap layer. Protects the ceramic element for longer service life.
Cross-references ACDelco 213-1357, ACDelco 213-1432 and BorgWarner OS966 for the same application. See all 28.
Denso OE Style Oxygen Sensor 234-4052
Denso 234-4052 is an OE Style heated oxygen sensor built for direct replacement on select Toyota applications. It is engineered for exact fitment, stable signal performance, and reliable exhaust monitoring on 1992-1995 Toyota 4Runner and Toyota Pickup models.
Key Features
- Heated oxygen sensor for faster operating response
- Specific-fit design for direct replacement installation
- 4-wire configuration with a 20.79 in. wiring harness length
- OE Style construction for factory-style fit and function
- Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination
- Built and tested to OE standards for consistent performance
Product Details
The Denso OE Style line is built for drivers who want a direct-fit oxygen sensor that matches the original application closely. Part number 234-4052 is designed for select Toyota 4Runner and Toyota Pickup models, including upstream and downstream positions shown in the fitment data. Denso’s OE-focused construction supports accurate exhaust feedback, which is important for fuel control and emissions system operation. This part cross-references Toyota 8946539465 and Bosch 13200 for the same application.
What This Oxygen Sensor Helps Address
- Check engine light related to oxygen sensor performance
- Rough idle caused by inaccurate exhaust feedback
- Reduced fuel economy from a slow or aging sensor
- Emissions test failures tied to sensor response issues
- Driveability problems from inconsistent air-fuel mixture control
Installation Notes and Fitment
- Fits 1992-1995 Toyota 4Runner, upstream
- Fits 1993-1995 Toyota 4Runner, upstream, excluding California
- Fits 1992-1995 Toyota Pickup, upstream, excluding California and single rear wheels
- Fits 1992-1995 Toyota Pickup, upstream
- Fits 1993-1995 Toyota Pickup, upstream, California exempt parts can be used on pollution controlled vehicles in California
- Fits 1992 Toyota Pickup, downstream, California exempt parts can be used on pollution controlled vehicles in California
- Fits 1992 Toyota Pickup, upstream, excluding California
- Fits 1992 Toyota Pickup, upstream, California, regular bed
- Fits 1992 Toyota Pickup, downstream
Verify the sensor position, connector style, and harness routing before installation. This Denso oxygen sensor is a specific-fit replacement for the listed Toyota 4Runner and Toyota Pickup applications, so matching the exact year, model, and emissions notes is important for proper installation.
Quality Assurance
Denso manufactures and tests this oxygen sensor to strict OE standards. The precision-built design, heated sensor construction, and contamination-resistant trap layer are intended to support dependable operation and long service life in the specified Toyota applications.
| Year | Make | Model | Bed Length | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 1995 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 1995 | Toyota | 4Runner | — | — | Upstream | Excluding California.; OE Style |
| 1995 | Toyota | Pickup | — | RWD | Upstream | Exc. Calif.; Single Rear Wheels; OE Style |
| 1995 | Toyota | Pickup | — | 4WD | Upstream | OE Style |
| 1995 | Toyota | Pickup | — | RWD | Upstream | California exempt parts can be used on pollution controlled vehicles in California.; OE Style |
| 1994 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 1994 | Toyota | 4Runner | — | — | Upstream | Excluding California.; OE Style |
| 1994 | Toyota | Pickup | — | RWD | Upstream | Exc. Calif.; Single Rear Wheels; OE Style |
| 1994 | Toyota | Pickup | — | 4WD | Upstream | OE Style |
| 1994 | Toyota | Pickup | — | RWD | Upstream | California exempt parts can be used on pollution controlled vehicles in California.; OE Style |
| 1993 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 1993 | Toyota | 4Runner | — | — | Upstream | Excluding California.; OE Style |
| 1993 | Toyota | Pickup | — | RWD | Upstream | Exc. Calif.; Single Rear Wheels; OE Style |
| 1993 | Toyota | Pickup | — | 4WD | Upstream | OE Style |
| 1993 | Toyota | Pickup | — | RWD | Upstream | California exempt parts can be used on pollution controlled vehicles in California.; OE Style |
| 1992 | Toyota | 4Runner | — | — | Upstream | OE Style |
| 1992 | Toyota | Pickup | — | RWD | Upstream | Exc. Calif.; Single Rear Wheels; OE Style |
| 1992 | Toyota | Pickup | — | 4WD | Upstream | OE Style |
| 1992 | Toyota | Pickup | 6' 3" Foot Bed | RWD | Downstream | California exempt parts can be used on pollution controlled vehicles in California.; OE Style |
| 1992 | Toyota | Pickup | — | 4WD | Upstream | Exc.Calif.; OE Style |
| 1992 | Toyota | Pickup | — | 4WD | Upstream | Calif.; Reg bed; OE Style |
| 1992 | Toyota | Pickup | — | 4WD | Downstream | OE Style |
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