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Denso 234-4250 Oxygen Sensor - Downstream
| Brand | Denso 234-4250 |
|---|---|
| Position | Downstream |
| Connector Gender | Female |
| Mounting Type | Threaded |
| Sensor Type | Heated |
| Thread Diameter | 0.708 |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Wiring Harness Length | 10.94 |
| Product line | OE Style |
| Fits | Chevrolet, Pontiac, and Saturn · 9 vehicles |
OE style replacement. Precision-built for exact replacement and a first-time fit.
Heated sensor. Helps support quicker operation and consistent performance.
Threaded mount. Female connector and 4-wire design for a straightforward install.
Cross-references ACDelco 213-4321, ACDelco 213-4643 and Bosch 15254 for the same application. See all 10.
Denso OE Style Oxygen Sensor 234-4250
Denso 234-4250 is an OE-style heated oxygen sensor built for specific applications that require a direct replacement with the correct connector, thread size, and harness length. It is engineered for downstream exhaust monitoring on select Chevrolet Malibu, Pontiac G6, and Saturn Aura models.
Key Features
- Heated oxygen sensor for downstream exhaust placement
- Specific fit design for direct replacement applications
- 4-wire configuration with female connector
- Threaded mounting with 0.708 in. thread diameter
- Wiring harness length: 10.94 in.
- OE Style construction for proper fit and sensor function
Product Details
Denso OE Style sensors are built and tested to OE-level standards for accurate replacement fitment and dependable exhaust feedback. Part number 234-4250 uses Denso’s aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable sensor operation and long service life. This part cross-references ACDelco 213-4321 and Bosch 15254 for the same application.
Compatible With 2008-2010 Chevrolet Malibu, downstream; 2009-2010 Pontiac G6, downstream; 2009 Saturn Aura, downstream; 2008 Pontiac G6, downstream, 2nd design; downstream sensor marked 12617907; OE Style; and 2008 Saturn Aura, downstream, 2nd design; downstream sensor marked 12617907; OE Style. The Denso 234-4250 is a direct-fit option for drivers replacing a downstream oxygen sensor on these vehicles.
Common Issues This Sensor Can Address
- Check engine light related to downstream oxygen sensor performance
- Incorrect exhaust feedback readings
- Reduced fuel economy caused by a failing sensor
- Emissions test failure tied to sensor response issues
- Rough or inconsistent engine operation from inaccurate air-fuel data
Installation Notes and Tips
Verify the connector style, wire count, and downstream location before installation. Confirm the vehicle’s sensor marking and design revision on 2008 Chevrolet Malibu, Pontiac G6, and Saturn Aura applications, since some listings require the 2nd design sensor marked 12617907. Threaded mounting helps ensure a secure exhaust connection when installed to the correct specification.
Quality Assurance
Denso manufactures and tests this oxygen sensor to OE standards for exact replacement fit and consistent performance. The OE Style line is built to match the original application requirements, helping ensure the right part and the right fit the first time.
| Year | Make | Model | Fuel Type | Position | Notes |
|---|---|---|---|---|---|
| 2010 | Chevrolet | Malibu | — | Downstream | OE Style |
| 2010 | Pontiac | G6 | — | Downstream | OE Style |
| 2009 | Chevrolet | Malibu | ELECTRIC/GAS | Downstream | OE Style |
| 2009 | Chevrolet | Malibu | GAS | Downstream | OE Style |
| 2009 | Pontiac | G6 | — | Downstream | OE Style |
| 2009 | Saturn | Aura | ELECTRIC/GAS | Downstream | OE Style |
| 2008 | Chevrolet | Malibu | — | Downstream | OE Style |
| 2008 | Pontiac | G6 | — | Downstream | 2nd Design; Downstream Sensor Marked 12617907; OE Style |
| 2008 | Saturn | Aura | — | Downstream | 2nd Design; Downstream Sensor Marked 12617907; OE Style |
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