What is a Denso Oxygen Sensor and how does it work?

The Denso Oxygen Sensor is an essential component in a vehicle's engine management system. It measures the amount of oxygen in the exhaust gases, helping to optimize fuel efficiency and reduce emissions. By providing real-time data to the engine control unit (ECU), it allows the ECU to adjust the air-fuel mixture, ensuring optimal combustion. Proper function of this sensor is critical for maintaining engine performance, improving gas mileage, and meeting environmental standards.

What are the symptoms of a faulty Oxygen Sensor?

Symptoms of a faulty Oxygen Sensor can include poor fuel economy, rough idling, and increased emissions. You might also notice the check engine light illuminating on your dashboard. In some cases, you may hear unusual sounds from the engine or experience reduced acceleration and performance. Addressing these signs promptly can help prevent further engine issues and ensure your vehicle runs smoothly.

How do I know if I need to replace my Denso Oxygen Sensor?

You should consider replacing your Denso Oxygen Sensor if you notice symptoms like a fluctuating or rough engine idle, poor acceleration, or decreased fuel efficiency. Additionally, if the check engine light appears, it's advisable to run a diagnostic test. If the codes indicate a problem with the oxygen sensor, replacement is recommended. Regular maintenance checks help identify these issues early and prolong engine health.

Can I install a Denso Oxygen Sensor myself?

Yes, installing a Denso Oxygen Sensor can be a DIY task if you are comfortable with basic automotive repair. You'll typically need simple tools like a wrench or a socket set. However, it's important to consult your vehicle’s service manual for specific instructions related to your model. Having a clear understanding of where the sensor is located and the installation steps can make this process efficient, saving on labor costs.

What is the difference between upstream and downstream Oxygen Sensors?

Upstream Oxygen Sensors are located before the catalytic converter, while downstream sensors are positioned after it. The upstream sensor primarily regulates the air-fuel mixture for optimal combustion, while the downstream sensor monitors the efficiency of the catalytic converter. Understanding this difference is important when diagnosing issues, as it affects performance and the overall function of your vehicle's emission control system.

Why choose Denso over other Oxygen Sensor brands?

Denso is renowned for its high-quality automotive parts, including Oxygen Sensors. Their products are often original equipment manufacturer (OEM) standards, meaning they're designed for compatibility and performance. Choosing Denso ensures reliability, durability, and optimal performance in your vehicle. Many mechanics prefer Denso for their consistency in quality, making it a trusted choice for car maintenance.

How often should I check my Oxygen Sensor?

It’s advisable to include the Oxygen Sensor in your regular vehicle maintenance checks, which typically occur every 30,000 to 100,000 miles depending on your vehicle's make and model. However, if you experience symptoms of deterioration, it’s best to have it inspected more frequently. Routine checks can help spot issues early and maintain engine efficiency and performance.

What happens if you drive with a bad Oxygen Sensor?

Driving with a bad Oxygen Sensor can lead to poor fuel efficiency, increased emissions, and possible damage to the catalytic converter. When the sensor fails to send accurate data to the ECU, it can cause the engine to run rich or lean, leading to greater engine wear over time. Addressing any issues with the sensor promptly can prevent further costly repairs and ensure your vehicle remains eco-friendly.

Is a Denso Oxygen Sensor compatible with all vehicle makes?

Denso Oxygen Sensors are available for a wide range of makes and models, but compatibility varies. It's crucial to verify the specific part number against your vehicle’s specifications before making a purchase. Most auto parts retailers and websites provide compatibility checkers to ensure you select the right sensor for your vehicle. Doing so will help maintain your car’s performance and emission controls effectively.

Where can I buy a Denso Oxygen Sensor in Saudi Arabia?

You can conveniently purchase Denso Oxygen Sensors at Ubuy in Saudi Arabia. Ubuy offers a wide selection of Denso products, ensuring you can find the right sensor for your vehicle's needs. Their platform is user-friendly, allowing you to easily search by your vehicle’s make and model, ensuring you get the right fit for optimal performance.

How to Shop Denso Oxygen Sensor Online From Ubuy?

It’s easy to shop Denso Oxygen Sensor online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.

Is Denso Oxygen Sensor Available to Shop Online in Saudi Arabia?

Yes, at Ubuy Saudi Arabia this product is available for you to shop at a reasonable price. The Denso Oxygen Sensor is not available locally but you can trust us with our express shipping services.

How Long Does It Take to Get Product After Placing the Order?

The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

Denso

Item #: 43810971

Denso Oxygen Sensor

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Item #: 43810971

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What Stands Out

Precision Technology

Denso oxygen sensors utilize advanced sensing technology, ensuring accurate readings that enhance engine performance and fuel efficiency, setting them apart from standard alternatives.

Durable Design

Built with high-quality materials, Denso sensors offer exceptional durability and resilience to extreme conditions, ensuring long-lasting performance and reduced replacement frequency.

Easy Installation

Designed for straightforward installation, Denso oxygen sensors save time and effort during maintenance, making them suitable for both DIY enthusiasts and professional mechanics.

Product Details

Maximum Supply Voltage	5 volts_of_direct_current
Measuring Range	0% - 20.93% O2
Mounting Type	Direct Fit
Output Type	electrical signal
Specific Uses For Product	Oxygen Sensor
Upper Temperature Rating	1000 °C
Material Type	Stainless Steel
Style Name	Modern
Item Dimensions	5.75 x 2.19 x 1.88 inches (14.6 x 5.6 x 4.8 cm)
Item Weight	4 ounces (113.4 grams)
Brand Name	Denso
Model	234-4985
UPC	042511122277
Number of Items	1
Global Trade Identification Number	00042511122277
Manufacturer	Denso
Item Highlight	Replaces 16161 24798 350-34901 226A0BV81A 250-241151. OE-grade O2 sensor.
Unit Count	1 Count
Included Components	Sensor
Item Type Name	Sensor
Part Number	234-4985
Brand	Denso
Item dimensions L x W x H	5.75 x 2.19 x 1.88 inches (14.6 x 5.6 x 4.8 cm)
Material	Stainless Steel
Style	Modern

What's in the box

Sensor

Who Should Buy?

Car Owners
Ideal for car owners needing reliable oxygen sensors for improved engine performance and fuel efficiency.
Mechanics and Technicians
Perfect for professionals who require high-quality parts for vehicle maintenance and repairs.
Emissions Compliance
Great for users concerned about emissions testing and wanting to ensure their vehicle meets regulatory standards.

Budget Shoppers
May not suit those looking for the cheapest options, as Denso is a premium brand with higher pricing.

Product Description

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Customer Questions & Answers

Question: How to Shop Denso Oxygen Sensor Online From Ubuy?

Answer: It’s easy to shop Denso Oxygen Sensor online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location.
Question: Is Denso Oxygen Sensor Available to Shop Online in Saudi Arabia?

Answer: Yes, at Ubuy Saudi Arabia this product is available for you to shop at a reasonable price. The Denso Oxygen Sensor is not available locally but you can trust us with our express shipping services.
Question: How Long Does It Take to Get Product After Placing the Order?

Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.

Denso Oxygen Editorial Review

Denso Oxygen Sensor is designed for high performance with a measuring range of 0% - 20.93% O2, ensuring accurate readings essential for optimal engine function. Its direct fit mounting type allows for easy installation, making it a practical choice for various vehicles. The sensor operates efficiently within a maximum supply voltage of 5 volts of direct current and can withstand temperatures up to 1000 °C, showcasing its reliability in demanding environments. Customers appreciate the quality construction using stainless steel, which contributes to its durability and long-lasting performance in an automotive setting.

Customer Reviews & Ratings

4.6

6 customers ratings

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Pros

Easy direct fit installation
Accurate O2 measurements
Durable stainless steel construction
High-temperature resistance
Lightweight and compact design

Cons

Only available in a single count option

Platform Trust & Buyer Confidence

4.3/5 355 reviews

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“Perfect service and fast delivery.”

16 July 2026 · via Trustpilot

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“We feel very good about the delivery time, and the materials we received matched our order.”

14 July 2026 · via Trustpilot

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“Thank you to the entire Ubuy Team for helping in the delivery of my order # 62608822717. All items were of very good quality. A happy and loyal customer.”

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“EXCELLENT SERVICE AND DELIVERED THE ITEM ON TIME & DATE.”

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Denso Oxygen Sensor