OE Quality
60-Day Returns

Bosch 15044 Oxygen Sensor - Downstream
Overview of Bosch Engineered Oxygen Sensor 15044
The Bosch Engineered Oxygen Sensor 15044 is designed specifically for Saturn Ion models, providing precise emission control and reliable performance. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to help maintain optimal engine efficiency.
- Specific fit for Saturn Ion vehicles
- Narrow-band heated oxygen sensor type
- Threaded mounting with 18 mm thread diameter
- 33.7-inch wiring harness length with connector included
- 4-pin female terminal with square male connector
- Standard replacement grade with metal housing
- Overall length of 37.4 inches for proper installation
Detailed Features and Specifications
This Bosch Engineered Oxygen Sensor 15044 features a narrow-band sensor type that is heated to provide faster response times and improved accuracy in measuring oxygen levels in the exhaust gases. The sensor is constructed with a durable metal housing finished in steel, ensuring longevity under high-temperature conditions. It includes a 33.7-inch wiring harness with a 4-wire configuration, featuring a 4-pin female terminal and a square-shaped male connector for secure electrical connections. The sensor mounts via a threaded design with an 18 mm thread diameter and a 22 mm hex size for easy installation using standard tools.
About the Bosch Engineered Oxygen Sensor Product Line
The Bosch Engineered Oxygen Sensor line focuses on delivering precise emission control components tailored to specific vehicle applications. This product line emphasizes compatibility and reliability, ensuring that sensors like the 15044 meet the exact requirements of vehicles such as the Saturn Ion. By using Bosch's engineering standards, these sensors support efficient engine management and emissions compliance.
Common Applications and Problem Resolution
- Restores accurate oxygen level readings for proper fuel mixture
- Helps resolve engine performance issues related to faulty sensors
- Reduces emissions by ensuring correct air-fuel ratio
- Prevents check engine light triggers caused by sensor failure
- Improves fuel economy by maintaining optimal combustion
Installation Notes and Tips
When installing the Bosch Engineered Oxygen Sensor 15044 on a Saturn Ion, ensure the sensor is threaded securely into the exhaust manifold or pipe using a 22 mm hex socket. Verify the wiring harness length of 33.7 inches is sufficient for your vehicle’s routing needs. Connect the 4-pin female terminal to the corresponding male connector, ensuring a snug fit to prevent electrical issues. Avoid overtightening to prevent damage to the sensor or threads.
Quality Assurance and Warranty
This oxygen sensor is manufactured to meet OEM standards for fit and function. The metal housing and heated sensor design contribute to durability and consistent performance. While specific warranty details are not provided here, Bosch products typically come with a limited warranty covering defects in materials and workmanship. Refer to Bosch or your parts provider for exact warranty terms.
This part fits 3 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2004 | Saturn | Ion | 2.0L | L4 | Downstream | Exact Fit; Bosch Engineered Oxygen Sensor |
| 2004 | Saturn | Ion | 2.2L | L4 | Downstream | Exact Fit; Bosch Engineered Oxygen Sensor |
| 2003 | Saturn | Ion | 2.2L | L4 | Downstream | Exact Fit; Bosch Engineered 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.