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Denso 234-4006 Oxygen Sensor - Upstream
| Brand | Denso 234-4006 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 12.80 |
| Product line | OE Style |
| Fits | Cadillac and Oldsmobile · 10 vehicles |
OE style replacement. Precision-built for an exact, first-time fit.
Heated sensor. Helps support efficient engine performance and fuel economy.
Aluminum oxide trap layer. Protects the ceramic element for longer service life.
Cross-references ACDelco 213-2883, ACDelco 213-4284 and ACDelco AFS73 for the same application. See all 13.
Denso OE Style Oxygen Sensor 234-4006
Denso 234-4006 is a specific-fit heated oxygen sensor built to OE-style dimensions for direct replacement service. It is engineered for 1993-1995 Cadillac Allante, 1993-1995 Cadillac Eldorado, 1993-1995 Cadillac Seville, 1994-1995 Cadillac DeVille, and 1995 Oldsmobile Aurora upstream applications.
Key Features
- Heated oxygen sensor with a specific-fit design
- OE Style replacement for accurate sensor placement and connector match
- 4-wire configuration with male connector
- Threaded mounting type with 0.708 in. thread diameter
- 12.80 in. wiring harness length for factory-style routing
- Built to Denso OE standards for replacement accuracy and consistent signal performance
Product Details
Denso OE Style oxygen sensors are precision built for exact replacement and first-time fit. Part number 234-4006 uses a heated, threaded design with a 4-wire male connector to match the original sensor layout on upstream locations. The sensor also incorporates Denso’s aluminum oxide trap layer, which helps protect the ceramic element from silicone and lead contamination for stable engine management and long service life. This part cross-references Bosch 15702 and NTK 21506 for the same application.
What This Sensor Helps Address
- Check engine light caused by a failing upstream oxygen sensor
- Rough idle or inconsistent air-fuel feedback
- Reduced fuel economy from inaccurate exhaust oxygen readings
- Slow sensor response that affects engine control strategy
- Emissions test failures related to oxygen sensor performance
Installation Notes
Verify the upstream position, connector style, wire count, and thread size before installation. On Cadillac DeVille, Eldorado, Seville, Allante, and Oldsmobile Aurora applications, confirm the harness length and routing match the original sensor location. Threaded installation requires proper seating in the exhaust bung and a secure electrical connection to restore accurate exhaust feedback.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for replacement accuracy and dependable operation. The OE Style line is designed to deliver the correct part and fit for the listed applications, including 1993-1995 Cadillac and 1995 Oldsmobile upstream sensor locations.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Cadillac | DeVille | Upstream | OE Style |
| 1995 | Cadillac | Eldorado | Upstream | OE Style |
| 1995 | Cadillac | Seville | Upstream | OE Style |
| 1995 | Oldsmobile | Aurora | Upstream | OE Style |
| 1994 | Cadillac | DeVille | Upstream | OE Style |
| 1994 | Cadillac | Eldorado | Upstream | OE Style |
| 1994 | Cadillac | Seville | Upstream | OE Style |
| 1993 | Cadillac | Allante | Upstream | OE Style |
| 1993 | Cadillac | Eldorado | Upstream | OE Style |
| 1993 | Cadillac | Seville | Upstream | OE Style |
| No rows match your filter. | ||||