Denso 234-4258 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4258

The Denso OE Style Oxygen Sensor 234-4258 is designed specifically for select Chevrolet, GMC, and Hummer models. This heated oxygen sensor features a 14.80-inch wiring harness and a threaded mounting type, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor for faster activation
• Specific fit for Chevrolet Silverado 1500, GMC Sierra 1500, and Hummer H2
• 14.80-inch wiring harness length for optimal installation
• Four-wire design with female connector for secure connection
• Threaded mounting with 0.708-inch thread diameter

Detailed Product Description

This Denso oxygen sensor, part number 234-4258, is engineered to meet the exact specifications of your vehicle’s emission system. The heated sensor type allows for quicker warm-up times, improving fuel efficiency and reducing emissions shortly after engine start. With a 14.80-inch wiring harness and a female connector, this sensor is designed for a direct replacement without the need for modifications. The four-wire configuration supports both the sensor signal and heater circuit, ensuring accurate oxygen level readings and proper sensor operation.

The threaded mounting type with a 0.708-inch diameter provides a secure and leak-free installation. This sensor is a specific fit for Chevrolet Silverado 1500, GMC Sierra 1500, and Hummer H2 models, ensuring compatibility and reliable performance.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that closely match original equipment specifications. This oxygen sensor is part of that line, offering a balance of quality and fitment precision. The OE Style sensors are designed to meet or exceed OEM standards, providing a dependable solution for emission control systems in specific vehicle applications.

Common Applications and Issues Addressed

• Restores proper air-fuel mixture readings for engine control
• Resolves check engine light issues related to oxygen sensor faults
• Improves fuel economy by providing accurate sensor data
• Reduces harmful emissions by ensuring correct sensor operation
• Prevents rough idling and engine performance problems caused by faulty sensors

Installation Notes and Tips

When installing the Denso 234-4258 oxygen sensor, ensure the engine is cool to avoid burns. Use anti-seize compound on the sensor threads if not pre-applied to facilitate future removal. Verify the connector type matches the vehicle harness to avoid electrical issues. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks or damage.

Quality Assurance and Warranty

Denso oxygen sensors undergo rigorous testing to meet strict quality standards. The OE Style 234-4258 sensor is manufactured to provide consistent performance and durability. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship, supporting long-term reliability in emission control applications.