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Denso 234-4152 Oxygen Sensor - Upstream
| Brand | Denso 234-4152 |
|---|---|
| Position | Upstream |
| Sensor Type | Heated |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 32.83 |
| Product line | OE Style |
| Fits | Toyota · 4 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Delivers faster operation for dependable emissions control.
Aluminum oxide trap layer. Helps protect the ceramic element for longer service life.
Cross-references ACDelco 213-1433, BorgWarner OS1652 and BorgWarner OS1766 for the same application. See all 18.
Denso OE Style Oxygen Sensor 234-4152
Denso 234-4152 is a heated oxygen sensor built to OE-style specifications for direct replacement on select Toyota applications. It is engineered for exact fit and stable exhaust feedback, helping maintain proper air-fuel control in 1988 Toyota Pickup and 1988-1989 Toyota 4Runner upstream positions.
Key Features
- Heated oxygen sensor for faster operating readiness
- Specific-fit design for direct replacement
- 32.83-inch wiring harness length
- 4-wire configuration for the listed application
- OE-style construction for accurate sensor placement
- Denso part number 234-4152 for easy identification
OE Style Construction
Denso’s OE Style line is built around factory-style fitment and consistent sensor performance. This oxygen sensor uses precision-built components for the listed Toyota applications, and Denso’s ceramic protection layer helps shield the sensing element from silicone and lead contamination that can affect sensor response and engine operation. If you are replacing a worn upstream sensor on a Toyota 4Runner or Toyota Pickup, 234-4152 is a direct-fit option designed around the original application.
This part cross-references Bosch 13279 and NTK 24112 for the same application.
What This Oxygen Sensor Helps Address
- Check engine light concerns related to oxygen sensor performance
- Rough idle or drivability issues caused by inaccurate exhaust feedback
- Reduced fuel economy from delayed or inconsistent sensor response
- Emissions test failures tied to a faulty upstream sensor
- Slow closed-loop operation after sensor aging or contamination
Installation Notes and Fitment
Fits 1988 Toyota Pickup, upstream. Fits 1988-1989 Toyota 4Runner, upstream. Confirm connector style, harness routing, and sensor location before installation. The 32.83-inch harness length and 4-wire layout should be matched to the original sensor configuration for proper installation and routing.
Quality Assurance
Denso manufactures and tests these oxygen sensors to OE standards for consistent replacement quality and first-time fit. The 234-4152 is built for the specified Toyota applications with attention to sensor accuracy, durability, and factory-style installation.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1989 | Toyota | 4Runner | — | Upstream | OE Style |
| 1988 | Toyota | 4Runner | — | Upstream | OE Style |
| 1988 | Toyota | Pickup | — | Upstream | OE Style |
| 1988 | Toyota | Pickup | 4WD | Upstream | OE Style |
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