Denso 234-4048 Oxygen Sensor - Downstream or Upstream

Reliable Oxygen Sensor for Jaguar, Lexus, and Toyota Vehicles

The Denso OE Style Oxygen Sensor 234-4048 is designed to provide precise emissions control for specific vehicle models including Jaguar XJ12 and XJS, Lexus GS300, and Toyota Highlander and RAV4. This heated oxygen sensor ensures accurate air-fuel mixture readings to maintain optimal engine performance and emissions compliance.

• Heated sensor type for faster response times
• Specific fit for Jaguar, Lexus, and Toyota models
• 31.10-inch wiring harness length for flexible installation
• Four-wire design with male connector for secure connection
• Threaded mounting type with 0.708-inch thread diameter

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications. The 234-4048 oxygen sensor is engineered to match the fit, form, and function of the factory-installed sensor, ensuring compatibility and reliable performance. This product line is ideal for technicians and vehicle owners seeking a direct replacement part that maintains the integrity of the vehicle’s emission system.

Detailed Product Description

This Denso oxygen sensor features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 31.10-inch wiring harness length provides ample reach for installation in the engine bay, while the four-wire configuration supports both sensor heating and signal transmission. The male connector and threaded mounting type with a 0.708-inch diameter ensure a secure and precise fit in the exhaust system. Designed specifically for select Jaguar, Lexus, and Toyota models, this sensor supports accurate oxygen level detection critical for engine management systems.

Common Applications and Issues Addressed

• Restores proper air-fuel ratio readings for improved engine performance
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring accurate sensor data
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports compliance with emissions regulations for specific vehicle models

Installation Notes and Tips

When installing the Denso 234-4048 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the sensor’s connector matches the vehicle’s harness and confirm the threaded mounting fits securely. It is recommended to apply anti-seize compound on the threads to facilitate future removal. Proper torque specifications should be followed to prevent leaks or sensor damage.

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. This ensures confidence in the sensor’s durability and performance when installed in compatible Jaguar, Lexus, and Toyota vehicles.