OE Quality
60-Day Returns

Bosch 15782 Oxygen Sensor - Upstream
Overview of Bosch Validated Oxygen Sensor 15782
The Bosch Validated Oxygen Sensor 15782 is designed specifically for Mazda 6 and CX-7 models, providing precise air-fuel mixture readings to optimize engine performance and emissions control. This heated, wide-band oxygen sensor ensures accurate data transmission to your vehicle's engine control unit for efficient combustion management.
- Heated oxygen sensor for faster activation
- Specific fit for Mazda 6 and CX-7 models
- Wide-band sensor type for precise air-fuel ratio measurement
- 28.9-inch wiring harness with 5 wires and blade terminals
- Threaded mounting type with 18 mm thread diameter
- Durable metal housing with steel finish
- Connector features a rectangular male design with 8 terminals
- Includes wiring harness for direct replacement
- Standard replacement grade for reliable performance
Detailed Product Description
The Bosch Validated Oxygen Sensor 15782 is engineered to meet the specific requirements of Mazda 6 and CX-7 vehicles. Featuring a heated element, this sensor reaches operating temperature quickly, reducing cold start emissions and improving fuel efficiency. The wide-band sensor technology provides a broad measurement range, allowing the engine control unit to maintain optimal air-fuel ratios under various driving conditions.
With a 28.9-inch wiring harness and 5-wire configuration, the sensor connects via a rectangular male connector with blade terminals, ensuring secure and reliable electrical connections. The sensor mounts using a threaded 18 mm diameter fitting, compatible with factory specifications. Constructed with a metal housing and steel finish, it offers durability and resistance to harsh engine environments.
About the Bosch Validated Oxygen Sensor Line
The Bosch Validated Oxygen Sensor product line focuses on delivering sensors that have been rigorously tested and validated for specific vehicle applications. This ensures compatibility and performance consistency, reducing the risk of installation issues or sensor failure. The 15782 model exemplifies this approach by providing a direct-fit, heated wide-band sensor tailored for Mazda 6 and CX-7 models.
Common Applications and Issues Addressed
- Replacement for faulty or aging oxygen sensors in Mazda 6 and CX-7
- Resolves engine performance issues related to incorrect air-fuel mixture
- Helps reduce emissions and pass vehicle inspections
- Improves fuel economy by providing accurate sensor data
- Eliminates check engine light triggers caused by sensor malfunction
Installation Notes and Tips
- Ensure vehicle compatibility with Mazda 6 or CX-7 before installation
- Use a 22 mm hex socket for sensor removal and installation
- Do not overtighten the sensor; follow manufacturer torque specifications
- Inspect wiring harness and connector for damage before installation
- Allow the engine to cool before replacing the oxygen sensor to avoid burns
Quality Assurance and Warranty
The Bosch Validated Oxygen Sensor 15782 is manufactured to meet OEM standards for fit, form, and function. It is constructed with high-quality materials including a metal housing and durable wiring harness. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship to ensure customer confidence in the product's reliability.
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2012 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2011 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2010 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2009 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2008 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2007 | Mazda | 6 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2007 | Mazda | CX-7 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
| 2006 | Mazda | 6 | 2.3L | L4 | Upstream | Bosch Validated Oxygen Sensor |
* 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.