OE Quality
60-Day Returns

Bosch 15798 Oxygen Sensor - Downstream
Reliable Oxygen Sensor for Suzuki Esteem and Grand Vitara
The Bosch Validated Oxygen Sensor 15798 is designed specifically for Suzuki Esteem and Grand Vitara models. This narrow-band heated oxygen sensor ensures accurate emission control and optimal engine performance by monitoring exhaust gases effectively.
- Specific fit for Suzuki Esteem and Grand Vitara
- Heated narrow-band oxygen sensor for precise readings
- Threaded mounting type with 18 mm thread diameter
- 17.5-inch wiring harness length with 4-wire configuration
- Durable metal housing with steel finish and 22 mm hex size
- Includes wiring harness and male blade terminals with square connector
About the Bosch Validated Oxygen Sensor Line
The Bosch Validated Oxygen Sensor product line focuses on delivering reliable emission control components that meet OEM specifications. The 15798 sensor is engineered to provide consistent performance and durability, ensuring compliance with emission standards for Suzuki vehicles. This line emphasizes precise sensor calibration and robust construction to maintain engine efficiency and reduce harmful emissions.
Product Details and Specifications
This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate oxygen level detection. The sensor has a threaded mounting type with an 18 mm diameter and 22 mm hex size for easy installation. It includes a 17.5-inch wiring harness with four wires and male blade terminals, connected via a square-shaped male connector. The sensor housing is made of metal with a steel finish, weighing approximately 0.31 lbs. The overall length from sealing surface to connector end is 19.7 inches, providing sufficient reach for proper fitment in the exhaust system.
Common Applications and Issues Addressed
- Restores proper air-fuel mixture readings for Suzuki Esteem and Grand Vitara
- Resolves engine performance issues related to faulty oxygen sensors
- Helps reduce emissions and pass vehicle inspection tests
- Prevents rough idling and poor fuel economy caused by sensor failure
- Eliminates check engine light triggers related to oxygen sensor faults
Installation Notes and Tips
Ensure the vehicle is cool before removing the old oxygen sensor to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the wiring harness length and connector type match the vehicle’s specifications. The threaded mounting requires proper torque to avoid exhaust leaks. No mounting bracket is included, so use the existing mounting point on the exhaust system. Confirm the sensor orientation and connector alignment before securing.
Quality Assurance and Warranty
The Bosch Validated Oxygen Sensor 15798 is manufactured to meet OEM standards for fit, form, and function. Bosch provides quality assurance through rigorous testing to ensure durability and reliable performance. This sensor is a standard replacement part designed to maintain emission control system integrity. Warranty details should be confirmed with the point of purchase or Bosch directly.
This part fits 4 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2008 | Suzuki | Grand Vitara | 2.7L | V6 | Downstream | Bosch Validated Oxygen Sensor |
| 2007 | Suzuki | Grand Vitara | 2.7L | V6 | Downstream | Bosch Validated Oxygen Sensor |
| 2006 | Suzuki | Grand Vitara | 2.7L | V6 | Downstream | Bosch Validated Oxygen Sensor |
| 2001 | Suzuki | Esteem | 1.6L | L4 | Downstream | 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.