Denso 234-3094 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Select GM Vehicles

The Denso OE Style 234-3094 oxygen sensor is designed specifically for a range of Buick, Chevrolet, GMC, Oldsmobile, and Pontiac models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated sensor type for faster response times
• Specific fit for select GM vehicles including Chevrolet Blazer and GMC Yukon
• 12.99-inch wiring harness length for proper installation
• Threaded mounting type with 0.708-inch thread diameter
• Three-wire configuration with male connector

About the Denso OE Style Product Line

The OE Style line from Denso offers oxygen sensors engineered to meet original equipment specifications. This ensures compatibility and reliable performance for vehicles requiring precise emissions control components. The 234-3094 sensor maintains factory standards for fit, function, and durability, making it suitable for specific GM models listed in its fitment.

Detailed Product Description

The Denso 234-3094 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving sensor response and reducing emissions during cold starts. Its 12.99-inch wiring harness length provides adequate reach for installation in the exhaust system, while the three-wire setup with a male connector ensures proper electrical connection. The threaded mounting type with a 0.708-inch diameter allows secure attachment to the exhaust manifold or pipe. This sensor is a specific fit for various Buick, Chevrolet, GMC, Oldsmobile, and Pontiac vehicles, including models such as the Chevrolet Astro, GMC Jimmy, and Pontiac Grand Prix.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel ratio for efficient combustion
• Reduces engine misfires and rough idling caused by faulty sensors
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate oxygen level readings
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old oxygen sensor carefully using an appropriate oxygen sensor socket. Verify the thread size matches the 0.708-inch diameter before installation. Connect the three-wire male connector securely and route the wiring harness to avoid contact with hot or moving parts. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet strict quality standards and original equipment specifications. While specific warranty details may vary, Denso products typically come with a limited warranty covering defects in materials and workmanship. Using this sensor helps maintain compliance with emissions regulations and supports reliable vehicle operation.