Denso 234-4421 Oxygen Sensor - Downstream

Overview of the Denso OE Style Oxygen Sensor 234-4421

The Denso OE Style Oxygen Sensor 234-4421 is designed specifically for Suzuki Verona models, providing precise emission control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a 23.03-inch wiring harness length for a secure and accurate fit.

• Heated oxygen sensor for faster response times
• Specific fit for Suzuki Verona vehicles
• Threaded mounting type with 0.708-inch thread diameter
• Four-wire design with male connector
• 23.03-inch wiring harness length for optimal installation

Detailed Product Description

This Denso oxygen sensor, part number 234-4421, belongs to the OE Style product line, which focuses on delivering original equipment quality and fitment. The OE Style line ensures that each sensor matches the specifications and performance of the factory-installed part, making it a reliable replacement for emission control systems. The heated sensor type accelerates the sensor’s readiness after engine start, improving fuel efficiency and reducing emissions.

With a specific fitment for Suzuki Verona models, this oxygen sensor features a threaded mounting type with a 0.708-inch thread diameter, ensuring a secure and leak-free installation. The four-wire configuration includes a male connector, designed to integrate seamlessly with the vehicle’s wiring harness. The 23.03-inch wiring harness length provides sufficient reach for proper routing and connection.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for optimal engine performance
• Helps resolve rough idling and engine hesitation
• Reduces increased emissions and failed emissions tests
• Corrects poor fuel economy caused by faulty oxygen sensors
• Eliminates check engine light codes related to oxygen sensor failure

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate oxygen sensor socket tools for removal and installation
• Apply anti-seize compound on the sensor threads if not pre-coated
• Verify connector polarity and secure male connector firmly
• Check for proper wiring harness routing to prevent damage

Quality Assurance and Warranty

Denso’s OE Style oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details may vary, Denso typically offers coverage against defects in materials and workmanship. Using a sensor from the OE Style line helps maintain the emission control integrity of your Suzuki Verona.