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Item #:
17797634
4 Oxygen Sensor for 2003 2004 2005 2006 Hyundai Santa Fe Kia Optima 2.7L Upstream Downstream
Item #:
17797634
GMD 6689
Price Details
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Imported from USA store
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Order now and get it around Wednesday, September 02
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What Stands Out
Complete Sensor Set
Includes both upstream and downstream sensors for comprehensive coverage, ensuring optimal vehicle performance and emissions control, catering to owners of 2003-2006 Hyundai Santa Fe and Kia Optima models.
Direct Fit
Designed for easy installation without modifications, providing a hassle-free upgrade for vehicle owners, enhancing compatibility and reducing installation time compared to generic alternatives.
Durable Construction
Built with high-quality materials to withstand extreme conditions, ensuring longevity and reliability, which addresses common sensor failures, offering peace of mind and cost savings on replacements.
Product Details
| Brand | Sangyue |
| Material | Copper, Stainless Steel |
| Item Weight | 0.56 Kilograms |
| Style | Modern |
| Maximum Supply Voltage | 5 Volts |
Who Should Buy?
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DIY Mechanics
Ideal for DIY enthusiasts looking to replace worn oxygen sensors in Hyundai Santa Fe or Kia Optima vehicles.
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Budget-Conscious Owners
Suitable for car owners needing affordable yet reliable OEM replacements to improve vehicle performance and emissions.
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Engine Repair Shops
A great choice for repair shops seeking cost-effective and dependable oxygen sensors for customer vehicles.
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Luxury Vehicle Owners
Not suitable for owners of premium brands as they may require specialized sensors for optimal performance.
Product Description
4 Oxygen Sensor for 2003 2004 2005 2006 Hyundai Santa Fe Kia Optima 2.7L Upstream Downstream
Have any Query? Chat with us
Customer Questions & Answers
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Question:
What is the function of an oxygen sensor in a vehicle?
Answer: An oxygen sensor monitors the level of oxygen in the exhaust gases of an internal combustion engine. This data is crucial as it helps the engine control unit (ECU) adjust the air-fuel mixture, ensuring optimal combustion efficiency. A properly functioning sensor can enhance fuel efficiency, reduce harmful emissions, and improve overall engine performance, making it essential for maintaining your vehicle's health. -
Question:
How can I tell if my oxygen sensor needs to be replaced?
Answer: Signs of a failing oxygen sensor include poor fuel economy, rough engine performance, or the illumination of the check engine light. If you notice your vehicle is using more fuel than usual, or if it's running inconsistently, an oxygen sensor replacement may be necessary. Addressing these issues promptly can prevent further damage to the vehicle's engine and exhaust systems. -
Question:
Where are the upstream and downstream oxygen sensors located?
Answer: The upstream oxygen sensor is typically located before the catalytic converter, while the downstream sensor is positioned after it. The upstream sensor monitors the oxygen content in the exhaust gases entering the catalytic converter, and the downstream sensor checks how effectively the converter is working. Knowing their locations can help you identify which one may be malfunctioning during maintenance. -
Question:
What are the differences between upstream and downstream oxygen sensors?
Answer: Upstream oxygen sensors primarily monitor the air-fuel mixture before the exhaust gases reach the catalytic converter, allowing the ECU to optimize fuel efficiency. Downstream sensors, however, assess the efficiency of the catalytic converter itself by analyzing the exhaust gases after they pass through. Understanding these roles helps in diagnosing which sensor may need replacement for improved vehicle performance. -
Question:
Can driving with a faulty oxygen sensor damage my vehicle?
Answer: Yes, a malfunctioning oxygen sensor can lead to poor fuel efficiency and increased emissions, which may accelerate engine wear over time. If left unattended, it could cause issues such as catalytic converter damage or lead to a malfunctioning engine system. Therefore, replacing a faulty sensor is crucial for maintaining your vehicle's performance and longevity. -
Question:
What tools do I need to replace an oxygen sensor?
Answer: To replace an oxygen sensor, you typically need a socket wrench, an oxygen sensor socket or a 22mm wrench, and possibly a torque wrench. Additionally, having some penetrating oil can assist in loosening any stuck sensors. Being equipped with the right tools ensures a smoother replacement process and helps avoid stripping the sensor's threads during removal. -
Question:
Is it recommended to replace all oxygen sensors at once?
Answer: While it’s not always necessary to replace all oxygen sensors simultaneously, if one is failing, others may also be nearing the end of their lifespan. Replacing them together can provide consistent sensor performance and reduce the frequency of future replacements. Consider this option when servicing an older vehicle as a preventive measure for optimal engine functionality. -
Question:
Can I clean my oxygen sensors instead of replacing them?
Answer: Cleaning an oxygen sensor is not typically recommended, as it can lead to inaccuracies in readings due to residual substances on the sensor. Instead, many professionals advise opting for a replacement. Replacing a faulty sensor ensures your vehicle operates efficiently, reducing emissions and enhancing fuel economy without the risk of an unreliable sensor. -
Question:
How do I properly install a new oxygen sensor?
Answer: To install a new oxygen sensor, start by ensuring the vehicle is off and cool to avoid burns. Remove the old sensor using appropriate tools, then position the new sensor and thread it into place. It's essential to torque it to the manufacturer's specifications to avoid leaks. After installation, reconnect the wiring harness and check for any error codes once the vehicle is restarted. -
Question:
Where can I buy 4 Oxygen Sensors for 2003 2004 2005 2006 Hyundai Santa Fe Kia Optima 2.7L Upstream Downstream?
Answer: You can conveniently purchase 4 Oxygen Sensors for the specified Hyundai and Kia models at Ubuy. Ubuy offers a wide selection of automotive parts and accessories, ensuring you receive quality products that meet your vehicle's requirements. Their platform is user-friendly, making it a great choice for automotive enthusiasts seeking reliable components.
Sangyue Oxygen Editorial Review
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Pros
- Improves vehicle emission control
- Easy to install
- Compatible with multiple models
- Enhances engine performance
Cons
- Instructions could be clearer.
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Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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GMD 6689
Order now and get it around Wednesday, September 02
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Features & Benefits
- Over 15 years of experience in O2 sensor production.
- Reverse-engineered to match OE quality and performance.
- Professional automotive aftermarket solutions.
- One Year Unlimited Mileage Quality Guarantee.
- Compatible with multiple Hyundai and Kia models.
- Easy installation with clear guidelines.
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