Denso 234-4630 Oxygen Sensor - Downstream, Upstream, Upstream Rear or Upstream Right

Overview of the Denso OE Style Oxygen Sensor 234-4630

The Denso OE Style Oxygen Sensor 234-4630 is designed specifically for select Lexus and Toyota models, including the GS200t, IS300, and Supra. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated sensor type for faster activation and improved efficiency
• Specific fit for Lexus and Toyota vehicles such as GS300, LS430, and RC200t
• Threaded mounting type with a 0.708-inch thread diameter for secure installation
• Four-wire design with a male connector for reliable electrical connection
• Wiring harness length of 17.72 inches to accommodate factory routing

Detailed Features and Specifications

This oxygen sensor features a heated element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The 234-4630 part number corresponds to a specific fitment, ensuring compatibility with Lexus and Toyota models like the SC430 and IS200t. The sensor’s four-wire configuration supports both the sensor signal and heater circuit, while the male connector matches factory wiring harnesses for straightforward replacement. Its threaded mounting type with a 0.708-inch diameter provides a secure and leak-free fit in the exhaust system.

About the Denso OE Style Product Line

The OE Style line from Denso focuses on delivering parts that meet original equipment specifications for fit, form, and function. The 234-4630 oxygen sensor is engineered to match the exact requirements of the vehicles it serves, providing a direct replacement that maintains factory performance and emissions standards.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Resolves check engine light issues related to oxygen sensor faults
• Helps reduce harmful emissions by ensuring proper catalytic converter operation
• Eliminates rough idling or engine hesitation caused by faulty sensors
• Prevents failed emissions tests due to sensor malfunctions

Installation Notes and Tips

When installing the Denso 234-4630 oxygen sensor, ensure the engine and exhaust system are cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the wiring harness length and connector gender match the vehicle’s factory setup before installation. Apply anti-seize compound to the threads if recommended by the vehicle manufacturer to facilitate future removal.

Quality Assurance and Warranty

Denso oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. The OE Style 234-4630 sensor is backed by Denso’s quality assurance protocols. Please refer to Denso or the vehicle manufacturer for specific warranty details related to this part.