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Item #:
113709746
A-Premium Upstream & Downstream O2 Oxygen Sensor Compatible with Subaru | for Outback 2013-2019, Forester 2013-2020, Legacy 2013-2019, Impreza
Item #:
113709746
USD 84
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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Imported from USA store
QTY:
Order now and get it around Sunday, August 16
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Buy with confidence - A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor.
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What Stands Out
Wide Compatibility
Designed to fit multiple Subaru models from 2012 to 2020, this sensor ensures a reliable solution for various engine types, minimizing compatibility issues for easier installation.
Upstream & Downstream
Includes both upstream and downstream sensors, providing comprehensive coverage for optimal engine management and emissions control, improving overall vehicle performance and fuel efficiency.
Premium Quality
Crafted for durability and reliability, the A-Premium O2 sensor delivers exceptional performance, reducing the risk of premature failure and ensuring long-lasting service in demanding driving conditions.
Product Details
- [Vehicle Fitment]: "Upstream and Downstream": Compatible with Subaru Crosstrek 2016-2020 H4 2.0L, Forester 2013-2020 H4 2.5L (Naturally Aspirated), Impreza 2012-2020 H4 2.0L, Legacy/Outback 2013-2019 H4 2.5L (DOHC), XV Crosstrek 2013/2015 H4 2.0L, XV Crosstrek 2014 H4 2.0L (GAS)
- [Reference Number]: 350-34052, 250-24487, 250-54084, 350-64031, 35034052, 25024487, 25054084, 35064031, OS5579
- [Specification]: ① Wire Quantity: 4; ② Overall Length: 425+400 mm; ③ Mounting Type: Threaded; ④ Sensor Type: Heated; ⑤ Connector Gender: Male; ⑥ Package Quantity: 2x Oxygen Sensor; ⑦ Packaging Type: Box
- [Quality Construction]: Manufactured from premium materials for a long lifespan; Quick and easy installation, requiring no special tools
- [Buy with Confidence]: A-Premium offers a one-year unlimited-mileage guarantee on our meticulously crafted O2 Oxygen Sensor. We offer a wide variety of automotive accessory categories, ensuring that you can hit the road with peace of mind.
| Measurement Accuracy | High |
| Mounting Type | Threaded Mount |
| Output Type | Analog |
| Specific Uses For Product | Real-time monitoring of oxygen content to help the ECU realize closed-loop control of air-fuel ratio |
| Material Type | Stainless Steel |
| Style Name | Modern |
| Item Weight | 0.28 kg |
| Brand Name | A-Premium |
| Model | OS5579 |
| Manufacturer | PremiumpartsWhosale |
| Unit Count | 2 Count |
| Part Number | APOS0872PC |
| Brand | A-Premium |
| Material | Stainless Steel |
| Style | Modern |
Who Should Buy?
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Subaru Owners
Ideal for Subaru Outback, Forester, Legacy, Impreza, and Crosstrek owners needing reliable oxygen sensors.
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DIY Mechanics
Perfect for those who enjoy performing maintenance and repairs on their vehicles at home to save costs.
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Cost-Conscious Shoppers
Great choice for budget-minded consumers seeking affordable yet high-quality replacement parts for their vehicles.
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Non-Subaru Vehicles
Not suitable for users with vehicles outside the listed Subaru models and years of compatibility.
Product Description
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
What is the function of the A-Premium O2 Oxygen Sensor?
Answer: The A-Premium O2 Oxygen Sensor plays a critical role in monitoring the oxygen levels in your vehicle’s exhaust gases. It helps the engine control module determine the air-fuel mixture, ensuring efficient combustion. This leads to improved fuel efficiency, reduced emissions, and better overall engine performance. For vehicles like the Subaru Outback and Forester, having a functioning O2 sensor is essential for maintaining optimal engine function. -
Question:
Is the A-Premium O2 Oxygen Sensor compatible with all Subaru models?
Answer: No, the A-Premium O2 Oxygen Sensor is specifically designed to be compatible with certain Subaru models like Outback 2013-2019, Forester 2013-2020, Legacy 2013-2019, Impreza 2012-2020, and XV Crosstrek 2013-2015. It's important to ensure that your specific model aligns with these compatibility requirements. Using the correct O2 sensor improves engine timing and efficiency, making it a significant component for those vehicles. -
Question:
How do I know when to replace my O2 sensor?
Answer: Signs that you may need to replace your O2 sensor include a check engine light appearing on your dashboard, decreased fuel efficiency, poor acceleration, or unusual exhaust odors. Additionally, if your vehicle fails emissions testing, a malfunctioning O2 sensor could be a contributing factor. Keeping an eye out for these signals can help you maintain your Subaru's performance and emissions standards. -
Question:
What are upstream and downstream O2 sensors?
Answer: Upstream O2 sensors are located before the catalytic converter, monitoring the oxygen levels in the exhaust gases prior to treatment. Downstream sensors, on the other hand, are positioned after the catalytic converter, providing feedback on its performance. Having both upstream and downstream O2 sensors ensures that your vehicle’s emission control system works effectively and can help in diagnosing any performance issues. -
Question:
Can I install the A-Premium O2 Oxygen Sensor myself?
Answer: Yes, the installation of the A-Premium O2 Oxygen Sensor can be done as a DIY project if you have basic mechanical skills and the right tools. Make sure to locate the sensor in your vehicle, disconnect the battery, and follow safety guidelines. Many Subaru owners successfully replace their O2 sensors to save on labor costs. Always refer to your vehicle’s manual for specific instructions to ensure proper installation. -
Question:
What materials are used in the A-Premium O2 Oxygen Sensor?
Answer: The A-Premium O2 Oxygen Sensor is constructed from high-quality materials designed for durability and efficient performance. The sensor typically features a stainless steel housing, ensuring resistance to corrosion and extreme temperature variations. This robust construction contributes to its reliability, making it suitable for the harsh conditions faced by vehicle emissions systems. -
Question:
How does the A-Premium O2 Oxygen Sensor affect fuel efficiency?
Answer: A functioning A-Premium O2 Oxygen Sensor helps the vehicle’s engine control unit adjust the air-fuel ratio for optimal combustion. When the sensor provides accurate readings, the engine operates efficiently, which can lead to improved fuel economy. If the sensor is failing, it may signal too much or too little fuel, resulting in wasted fuel. Ensuring you have a reliable sensor is key for maintaining high fuel efficiency in your Subaru. -
Question:
Do I need to reset my engine control module after replacing the O2 sensor?
Answer: In many cases, you will need to reset your engine control module after replacing the O2 sensor to clear any check engine codes. This can often be done by disconnecting the vehicle's battery for a period or using an OBD-II scanner to clear the codes. Resetting ensures that the new sensor readings are taken into account for optimal vehicle performance. -
Question:
What makes A-Premium O2 Oxygen Sensors a good choice?
Answer: A-Premium O2 Oxygen Sensors are known for their reliability and seamless compatibility with specific Subaru models. They undergo rigorous testing to meet or exceed OEM standards, ensuring superior performance. By choosing A-Premium, you can trust that you are getting a quality product that will help maintain your vehicle’s efficiency and longevity. -
Question:
Where can I buy A-Premium O2 Oxygen Sensor compatible with my Subaru?
Answer: You can buy the A-Premium O2 Oxygen Sensor compatible with your Subaru models at Ubuy. They offer a wide selection of automotive parts, ensuring you find the exact fit for your needs. Ubuy provides a reliable platform with convenient purchasing options, making it easy to stock your vehicle with quality parts.
A-Premium Oxygen Editorial Review
The A-Premium O2 Oxygen Sensor has garnered a mixed reception from users, particularly those with Subaru vehicles. Many customers appreciate the cost-effectiveness of these sensors, noting they significantly improved vehicle performance and efficiency. One user mentioned that after changing a plugged catalytic converter and installing these sensors, they noticed a substantial increase in fuel efficiency—up by three miles per gallon—and a noticeable enhancement in power delivery. However, not all reviews are positive. Some users have reported that their sensors did not function as expected, with a few experiencing early failure. One customer found that despite being compatible, their sensor continued to trigger check engine lights. Additionally, a couple of reviews expressed the need for clearer instructions regarding the distinction between the upstream and downstream sensors, which could be confusing for less experienced users. Despite these concerns, a few customers have reported long-lasting performance after initial installation, leading to overall satisfaction with the product. In summary, the A-Premium O2 Oxygen Sensor offers an affordable solution for Subaru owners looking to address oxygen sensor issues. While many have found success with improved fuel economy and performance, there are notable concerns regarding reliability and the clarity of installation instructions. **
Customer Reviews & Ratings
99 customers ratings
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5 Star
67%
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4 Star
12%
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3 Star
3%
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2 Star
4%
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1 Star
14%
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Pros
- Affordable price point compared to higher-end options
- Improved fuel efficiency reported by several users (up to 3 mpg)
- Enhanced vehicle performance noted after installation
- Good quality components as per some reviews
Cons
- Some sensors experienced early failure
Platform Trust & Buyer Confidence
MA
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
CK
Chitra
Verified buyer
“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
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“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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SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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USD 84
Order now and get it around Sunday, August 16
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Features & Benefits
- Compatible with multiple Subaru models from 2012 to 2020.
- Includes two high-quality oxygen sensors in a single package.
- Manufactured from premium materials for long-lasting performance.
- Easy to install without the need for special tools.
- Offers a one-year unlimited-mileage guarantee for peace of mind.
- Perfect choice for maintaining optimal vehicle performance.
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