Bosch 15238 Oxygen Sensor - Downstream

Reliable Oxygen Sensor for Buick, Cadillac, Chevrolet, and GMC Vehicles

The Bosch Engineered Oxygen Sensor 15238 is designed to provide precise air-fuel mixture readings for specific Buick, Cadillac, Chevrolet, and GMC models. This direct fit, heated narrow-band oxygen sensor ensures accurate emissions control and optimal engine performance.

• Direct fit oxygen sensor with threaded mounting type for easy installation
• Heated sensor design for faster response and improved efficiency
• 4-wire configuration with blade terminals and oblong male connector
• Wiring harness length of 8.3 inches and overall length of 12 inches
• Constructed with durable metal housing and steel finish
• Compatible with Buick ATS, Cadillac CTS, Chevrolet Camaro, Corvette, Colorado, and GMC Canyon models
• Thread diameter and size of 18 mm with 22 mm hex size for installation

About the Bosch Engineered Oxygen Sensor Product Line

The Bosch Engineered Oxygen Sensor line focuses on delivering precise and reliable emission control components tailored to specific vehicle applications. The 15238 oxygen sensor is part of this line, offering a standard replacement grade with a direct fit design that matches original equipment specifications. This ensures consistent performance and compatibility with the vehicle’s engine management system.

Product Details and Specifications

This Bosch oxygen sensor features a narrow-band sensor type that accurately measures oxygen levels in the exhaust gases to help maintain optimal combustion. The sensor is heated, which allows it to reach operating temperature quickly, improving response time and reducing emissions during cold starts. The 4-wire design includes a male oblong connector with blade terminals, providing secure electrical connections. The sensor’s metal housing and steel finish contribute to its durability under harsh engine conditions. With a threaded mounting type and 18 mm thread size, installation aligns with factory specifications for a secure fit.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio readings for improved fuel efficiency
• Helps resolve check engine light codes related to oxygen sensor failure
• Reduces vehicle emissions by ensuring accurate sensor feedback
• Improves engine performance and drivability in Buick ATS and Cadillac CTS
• Compatible replacement for Chevrolet Camaro, Corvette, Colorado, and GMC Canyon oxygen sensors

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 sensor’s wiring harness length and connector type match the vehicle’s factory harness to prevent electrical issues. The threaded mounting type requires proper torque to avoid leaks or damage. This sensor is a specific fit part, so confirm compatibility with your Buick, Cadillac, Chevrolet, or GMC model before installation.

Quality Assurance and Warranty

The Bosch Engineered Oxygen Sensor 15238 is manufactured to meet OEM standards for fit, form, and function. It undergoes rigorous testing to ensure durability and reliable performance 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.