Bosch 13474 Oxygen Sensor - Downstream, Downstream Right or Upstream

Reliable Oxygen Sensor for GM Vehicles

The Bosch Engineered Oxygen Sensor 13474 is designed specifically for select Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac models. This narrow-band heated oxygen sensor ensures accurate air-fuel mixture readings to support optimal engine performance and emissions control.

• Specific fit for GM vehicles including Silverado, Tahoe, Escalade, and more
• Heated narrow-band oxygen sensor with 4-wire design for precise operation
• Threaded mounting type with 18 mm thread diameter and 22 mm hex size
• Includes 12.7-inch wiring harness with male blade terminals and square connector
• Durable metal housing finished in steel for long-lasting use

About the Bosch Engineered Oxygen Sensor Line

The Bosch Engineered Oxygen Sensor line focuses on delivering reliable emission control components tailored to specific vehicle applications. This product line emphasizes precise sensor technology and durable construction to meet OEM standards. The 13474 oxygen sensor is part of this line, providing a standard replacement solution engineered to maintain factory-level performance in GM trucks and cars.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band heated sensor type with four wires and blade terminals, ensuring accurate and responsive feedback to the engine control unit. The sensor’s threaded mounting type with an 18 mm diameter and 22 mm hex size allows for secure installation. The wiring harness length is 12.7 inches, with an overall length of 16.4 inches, including a 15.2-inch length from the sealing surface to the connector end. The connector is male with a square shape, designed for a specific fit on compatible GM models. The sensor housing is made of metal with a steel finish, weighing approximately 0.22 pounds.

Compatible Vehicles and Applications

• Buick models such as Century, LeSabre, and Regal
• Cadillac including DeVille, Eldorado, Seville, and Escalade
• Chevrolet trucks and cars like Silverado 1500, Tahoe, and Impala
• GMC trucks including Sierra 1500, Yukon, and Savana series
• Oldsmobile and Pontiac models such as Cutlass, Grand Prix, and Firebird

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 data
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Failed or degraded sensor causing drivability issues

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 sensor’s wiring harness and connector match the vehicle’s factory harness for proper fitment. Thread the sensor carefully to avoid cross-threading and torque to manufacturer specifications. The Bosch 13474 includes the wiring harness for a direct replacement installation.

Quality Assurance and Warranty

Bosch Engineered Oxygen Sensors are manufactured to meet or exceed OEM standards for durability and performance. This sensor is a standard replacement part designed for reliable operation in emission control systems. While specific warranty details are not provided here, Bosch products typically come with a limited warranty covering defects in materials and workmanship.