OE Quality
60-Day Returns

Bosch 15322 Oxygen Sensor
Reliable Oxygen Sensor for Ford, Kia, Mazda, and Mercury Vehicles
The Bosch Validated Oxygen Sensor 15322 is designed to provide accurate air-fuel mixture readings for specific vehicle models including Ford Escort, Kia Sephia, Mazda Miata, and Mercury Tracer. This narrow-band heated oxygen sensor ensures optimal engine performance and emission control.
- Specific fit for Ford Escort, Kia Sephia, Mazda Miata, MPV, MX-3, Protege, and Mercury Tracer
- Heated narrow-band oxygen sensor for precise emissions monitoring
- Threaded mounting type with 18 mm thread diameter and 22 mm hex size
- Includes a 19.1-inch wiring harness with 4-pin rectangular female connector
- Durable metal housing finished in steel for long-lasting use
- Standard replacement grade with 4-wire configuration
- Overall length of 22.8 inches and wiring harness length of 19.1 inches
About the Bosch Validated Oxygen Sensor Line
The Bosch Validated Oxygen Sensor product line focuses on delivering reliable and precise emission control components that meet OEM specifications. The 15322 oxygen sensor is part of this line, ensuring compatibility and performance for specific vehicle applications. This sensor is engineered to provide consistent readings for the engine control unit, helping maintain proper fuel efficiency and emission standards.
Product Details and Specifications
This Bosch oxygen sensor features a narrow-band heated design, which allows it to reach operating temperature quickly for accurate measurement of oxygen levels in the exhaust gases. The sensor’s 4-wire configuration includes a heated element and signal wires, connected via a female rectangular connector with four terminals. The threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. The sensor’s metal housing and steel finish provide durability under high-temperature conditions. The wiring harness length of 19.1 inches and overall length of 22.8 inches ensure proper fitment within the engine bay.
Common Applications and Issues Addressed
- Restores accurate air-fuel ratio readings for Ford Escort, Kia Sephia, Mazda Miata, and Mercury Tracer
- Resolves engine performance issues related to faulty oxygen sensors
- Helps reduce emissions and prevent check engine light triggers
- Improves fuel efficiency by providing correct sensor data to the ECU
- Replaces worn or damaged oxygen sensors in specific vehicle models
Installation Notes and Tips
When installing the Bosch Validated Oxygen Sensor 15322, ensure the engine is cool to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the sensor’s wiring harness is properly connected to the vehicle’s female connector to prevent electrical issues. Thread the sensor carefully to avoid cross-threading and tighten to manufacturer torque specifications. No mounting bracket is included, so use the existing mounting point on the vehicle.
Quality Assurance and Warranty
Bosch oxygen sensors are manufactured to meet strict quality standards and OEM specifications. The 15322 sensor undergoes rigorous testing to ensure reliable performance and durability. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship. Refer to Bosch or the vehicle manufacturer for exact warranty terms.
This part fits 27 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2001 | Mazda | MPV | 2.5L | V6 | Downstream | Alternative Fit 1; Located After Secondary Converter; without California Emission System; Bosch Validated Oxygen Sensor |
| 2000 | Mazda | Miata | 1.8L | L4 | Downstream | Exact Fit; with California Emission System; Bosch Validated Oxygen Sensor |
| 2000 | Mazda | MPV | 2.5L | V6 | Downstream | Alternative Fit 1; Located After Secondary Converter; without California Emission System; Bosch Validated Oxygen Sensor |
| 2000 | Mazda | Protege | 1.6L | L4 | Upstream | Exact Fit; without California Emission System; Bosch Validated Oxygen Sensor |
| 2000 | Mazda | Protege | 1.8L | L4 | Upstream | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1999 | Mazda | Miata | 1.8L | L4 | Downstream | Exact Fit; with California Emission System; Bosch Validated Oxygen Sensor |
| 1999 | Mazda | Protege | 1.6L | L4 | Upstream | Exact Fit; without California Emission System; Bosch Validated Oxygen Sensor |
| 1999 | Mazda | Protege | 1.8L | L4 | Upstream | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1998 | Mazda | Protege | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1997 | Kia | Sephia | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1997 | Mazda | Protege | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1996 | Ford | Escort | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1996 | Kia | Sephia | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1996 | Mazda | Protege | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1996 | Mercury | Tracer | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1995 | Ford | Escort | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1995 | Kia | Sephia | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1995 | Mazda | MX-3 | 1.8L | V6 | Upstream Front | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1995 | Mazda | MX-3 | 1.8L | V6 | Upstream Rear | Exact Fit; Bosch Validated Oxygen Sensor |
| 1995 | Mazda | Protege | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1995 | Mercury | Tracer | 1.8L | L4 | Upstream | Exact Fit; Bosch Validated Oxygen Sensor |
| 1994 | Mazda | MX-3 | 1.8L | V6 | Upstream Left | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1994 | Mazda | MX-3 | 1.8L | V6 | Upstream Right | Exact Fit; without California Emission System; Bosch Validated Oxygen Sensor |
| 1993 | Mazda | MX-3 | 1.8L | V6 | Upstream Right | Exact Fit; Bosch Validated Oxygen Sensor |
| 1993 | Mazda | MX-3 | 1.8L | V6 | Upstream Left | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1992 | Mazda | MX-3 | 1.8L | V6 | Upstream Left | Alternative Fit 1; Bosch Validated Oxygen Sensor |
| 1992 | Mazda | MX-3 | 1.8L | V6 | Upstream Right | Exact Fit; 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.