Bosch 15698 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Reliable Oxygen Sensor for Select GM Vehicles

The Bosch Engineered Oxygen Sensor 15698 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. This specific fit oxygen sensor is compatible with a range of Cadillac, Chevrolet, GMC, Pontiac, and Saturn models, ensuring precise operation tailored to your vehicle.

• Specific fit for Cadillac, Chevrolet, GMC, Pontiac, and Saturn models
• Heated narrow-band oxygen sensor for faster response times
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 14.4-inch wiring harness with 4-pin female connectors
• Durable metal housing finished in steel for long-lasting use
• Standard replacement grade for reliable emission control

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise sensor technology engineered to meet or exceed OEM specifications. The 15698 part number represents a narrow-band heated oxygen sensor designed for specific GM vehicle applications, providing consistent sensor readings and compatibility with factory wiring harnesses. This product line emphasizes durability and accurate emissions monitoring to support engine management systems.

Product Details and Specifications

This oxygen sensor features a 4-wire configuration with female pin terminals and a square-shaped connector, ensuring secure and proper electrical connections. The sensor’s overall length is 18.1 inches, with a wiring harness length of 14.4 inches and a sealing surface to connector length of 16.9 inches, allowing for straightforward installation in designated vehicle models. The sensor is threaded for mounting, with an 18 mm thread diameter and a 22 mm hex size for tightening. Its metal housing and heated element enable reliable operation under various engine conditions.

Compatible Vehicles and Applications

• Cadillac Escalade, Escalade ESV, Escalade EXT, CTS
• Chevrolet Avalanche, Camaro, Caprice, Corvette, Equinox, Impala, Malibu, Montana, Silverado 1500/2500 HD/3500 HD, SS, Suburban 1500/2500, Tahoe, Torrent, Uplander
• GMC Sierra 1500/2500 HD/3500 HD, Yukon, Yukon XL 1500/2500
• Pontiac G6, GTO
• Saturn Aura, Vue

Common Issues Addressed by This Oxygen Sensor

• Engine performance problems due to inaccurate air-fuel mixture readings
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions and failed emissions tests
• Poor fuel economy caused by incorrect sensor data
• Rough idling or hesitation during acceleration

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use a 22 mm oxygen sensor socket for removal and installation. Verify the connector type and wiring harness length match your vehicle’s specifications. Do not overtighten the sensor; torque to manufacturer specifications to prevent damage. The threaded mounting type allows for straightforward replacement without additional brackets.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 15698 is manufactured to meet OEM standards for fit, form, and function. It is constructed with durable metal housing and a heated element to ensure consistent performance. While specific warranty details may vary, Bosch typically offers a limited warranty covering defects in materials and workmanship to provide confidence in product reliability.