Bosch 15284 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for GM and Isuzu Vehicles

The Bosch Engineered Oxygen Sensor 15284 is designed to provide accurate air-fuel mixture readings for improved engine performance and emissions control. Specifically engineered for select Buick, Cadillac, Chevrolet, GMC, and Isuzu models, this narrow-band heated oxygen sensor ensures precise monitoring of exhaust gases.

• Heated narrow-band oxygen sensor for efficient operation
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes a 13.3-inch wiring harness with 4 wires and a male rectangular connector
• Constructed with durable metal housing finished in steel
• Standard replacement grade for specific vehicle fitment

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering reliable emission control components tailored to exact vehicle specifications. This product line emphasizes precise fitment and consistent sensor performance, helping maintain factory-level emissions standards. The 15284 oxygen sensor is part of this line, offering a heated narrow-band sensor designed for specific GM and Isuzu models to ensure optimal engine management system feedback.

Product Details and Specifications

This oxygen sensor features a 17-inch overall length and a 15.9-inch length from the sealing surface to the end of the connector, providing ample reach for installation. The sensor includes a 4-terminal blade type connector with a male gender and a rectangular shape, ensuring secure electrical connections. The wiring harness is included, facilitating straightforward replacement. The sensor weighs approximately 0.29 pounds and is constructed with a metal housing for durability under high-temperature exhaust conditions.

Compatible Vehicles and Applications

• Buick Ascender
• Cadillac CTS, Escalade
• Chevrolet Avalanche 1500, Silverado 1500, SSR, Suburban 1500, Tahoe
• GMC Envoy, Envoy XL, Envoy XUV, Rainier, Sierra 1500, Yukon, Yukon XL 1500
• Isuzu Ascender, Trailblazer EXT

This oxygen sensor is designed to replace factory units in these models, helping to maintain proper engine air-fuel ratios and reduce emissions.

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture
• Increased emissions and failed emissions tests
• Engine hesitation or rough idling caused by sensor malfunction
• Reduced engine performance and drivability issues

Installation Notes and Tips

Installation requires removal of the old oxygen sensor and threading the Bosch 15284 sensor into the exhaust manifold or pipe. Use a 22 mm oxygen sensor socket for proper tightening. Ensure the wiring harness is connected securely to the vehicle’s connector, matching the 4-terminal male blade connector. No mounting bracket is included, so the sensor mounts directly via its threaded design. Verify compatibility with your specific vehicle model before installation.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 15284 is manufactured to meet OEM specifications for fit and function. It is constructed with high-quality materials including a metal housing and heated sensor element to ensure durability and reliable performance. While specific warranty details are not provided here, Bosch products typically come with a limited warranty covering defects in materials and workmanship.