Denso 234-4803 Oxygen Sensor - Upstream

Overview of Denso OE Style Oxygen Sensor 234-4803

The Denso OE Style Oxygen Sensor 234-4803 is designed specifically for Toyota Celica models, providing precise emissions control through accurate oxygen level monitoring. This heated oxygen sensor features a threaded mounting type and a 19.29-inch wiring harness, ensuring a secure and reliable fit.

• Heated oxygen sensor for faster response times
• Specific fit for Toyota Celica vehicles
• Threaded mounting with 0.708-inch thread diameter
• 19.29-inch wiring harness length with 4 wires
• Male connector for direct compatibility

Detailed Product Description

The Denso 234-4803 oxygen sensor is engineered to meet the exact specifications of Toyota Celica models, ensuring optimal performance and emissions control. This heated sensor type accelerates the sensor’s readiness by warming up quickly, which helps maintain efficient engine operation and reduces harmful emissions. The sensor includes a 19.29-inch wiring harness with four wires, allowing for proper electrical connections and communication with the vehicle’s engine control unit. Its threaded mounting type with a 0.708-inch diameter ensures a secure installation in the exhaust system. The male connector design facilitates a straightforward plug-and-play replacement.

This oxygen sensor is part of Denso’s OE Style product line, which focuses on delivering parts that closely replicate original equipment specifications. The OE Style line is intended for customers seeking reliable, direct-fit components that maintain factory performance and durability standards.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for Toyota Celica
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing precise emissions data
• Reduces exhaust emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded removal and installation
• Verify connector gender matches the vehicle harness for compatibility
• Do not over-tighten the sensor; follow torque specifications for 0.708-inch thread diameter
• Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Denso OE Style oxygen sensors are manufactured to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details may vary, Denso parts typically come with a limited warranty covering defects in materials and workmanship. Using a sensor designed specifically for Toyota Celica models helps maintain compliance with emissions regulations and supports long-term vehicle health.