OE Quality
60-Day Returns

Denso 234-3014 Oxygen Sensor - Upstream
Reliable Oxygen Sensor for Geo, Isuzu, Pontiac, and Suzuki Vehicles
The Denso OE Style 234-3014 oxygen sensor is designed specifically for select Geo, Isuzu, Pontiac, and Suzuki models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.
- Heated sensor type for faster response times
- Specific fit for Geo Impulse, Isuzu Stylus, Pontiac Sunrunner, Suzuki Sidekick, Storm, and Tracker
- 12.80-inch wiring harness length for proper installation
- Threaded mounting type with 0.708-inch thread diameter
- Three-wire configuration with male connector
About the Denso OE Style Product Line
The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. This ensures compatibility and reliable performance for vehicles requiring precise emissions control components. The 234-3014 sensor maintains factory standards for fit, function, and durability, making it suitable for specific Geo, Isuzu, Pontiac, and Suzuki models.
Product Details and Specifications
This oxygen sensor features a heated element that allows it to reach operating temperature quickly, improving sensor response and reducing emissions during cold starts. The 12.80-inch wiring harness length provides adequate reach for proper connection without excess slack. Its three-wire design includes a male connector, facilitating straightforward integration with the vehicle’s wiring harness. The sensor mounts securely using a threaded fitting with a 0.708-inch diameter, ensuring a tight and leak-free installation.
Common Applications and Issues Addressed
- Helps maintain optimal air-fuel ratio for efficient combustion
- Reduces engine misfires and rough idling caused by faulty sensors
- Prevents increased emissions and failed emissions tests
- Improves fuel economy by providing accurate oxygen level readings
- Resolves check engine light triggers related to oxygen sensor faults
Installation Notes and Tips
When installing the Denso 234-3014 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the wiring harness length and connector gender match the vehicle’s specifications before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks.
Quality Assurance and Warranty
Denso OE Style oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. This ensures dependable performance and peace of mind when replacing your vehicle’s oxygen sensor.
| Brand | Denso |
| Part Number | 234-3014 |
| Position | OE Style, Upstream |
| Connector Gender | Male |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 3 |
| Wiring Harness Length | 12.80 |
This part fits 13 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Geo | Tracker | Upstream | Excluding California.; OE Style |
| 1995 | Pontiac | Sunrunner | Upstream | Excluding California.; OE Style |
| 1995 | Suzuki | Sidekick | Upstream | Excluding California.; OE Style |
| 1994 | Suzuki | Sidekick | Upstream | Excluding California.; OE Style |
| 1993 | Suzuki | Sidekick | Upstream | Convertible; OE Style |
| 1992 | Isuzu | Impulse | Upstream | OE Style |
| 1992 | Suzuki | Sidekick | Upstream | Convertible; OE Style |
| 1991 | Geo | Storm | Upstream | OE Style |
| 1991 | Isuzu | Impulse | Upstream | OE Style |
| 1991 | Isuzu | Stylus | Upstream | OE Style |
| 1991 | Suzuki | Sidekick | Upstream | OE Style |
| 1990 | Geo | Storm | Upstream | OE Style |
| 1990 | Isuzu | Impulse | Upstream | OE Style |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.