4PCS O2 Oxygen Sensor Upstream + Downstream fits Accord 3.5L V6 08-12

Product Description

4PCS Premium Oxygen (O2) Sensor Set (Upstream + Downstream) Replacement High-Precision Sensing | Direct Fitment | 12V System

🔍 PRODUCT OVERVIEW This premium aftermarket oxygen sensor full kit includes 2 Upstream (Air-Fuel Ratio) and 2 Downstream (Diagnostic) sensors. Specifically engineered to fit highly popular mid-size sedan and coupe platforms equipped with the powerful 3.5L V6 engines (2008-2012 models), these sensors are critical components for your vehicle's emission control and high-performance fuel management systems. The upstream sensors accurately monitor the air-fuel ratio for optimal V6 combustion and efficiency, while the downstream sensors ensure the catalytic converters are functioning perfectly. Replacing aging sensors as a complete set can restore engine performance, significantly improve fuel economy, and clear common check engine lights (DTCs).

  • Position: 2x Upstream (Front/Before Cat) + 2x Downstream (Rear/After Cat)

  • Condition: 100% Brand New Set (4 Pieces Total)

  • Voltage: 12V

✅ VEHICLE COMPATIBILITY Fits the following platforms:

  • Models: fits Accord 3.5L V6 (2008, 2009, 2010, 2011, 2012).

  • Important Note: This is a comprehensive 4-piece kit designed specifically for the 3.5L V6 engine (does NOT fit 2.4L 4-cylinder models). Please verify your original part numbers, wire lengths, or connector shapes match before purchasing to ensure 100% fitment on these specific V6 models.

💎 KEY FEATURES

  • Direct Fitment: Designed as a 1:1 replacement with plug-and-play connectors for a quick and seamless installation without modification.

  • Optimized V6 Performance: Provides precise feedback to the ECU, helping to maintain the perfect air-fuel mixture for smooth power delivery and variable cylinder management efficiency.

  • Rugged Durability: Manufactured with high-temperature resistant stainless steel and premium ceramic elements to withstand extreme exhaust temperatures.

  • Reliability Tested: Each sensor undergoes rigorous electrical and response time testing to guarantee stable signal output and long-term performance.

📧 CONTACT US

  • Response Time: We respond to all inquiries within 24 hours on business days.

  • Verification: Unsure about fitment? Please message us with your VIN (Vehicle Identification Number) before ordering, and our team will verify compatibility for you.


We accept all payment methods supported by eBay Managed Payments, including Credit Cards (Visa, MasterCard, Amex, Discover), Apple Pay, Google Pay, and PayPal.



  • Immediate Payment: Immediate payment is required for "Buy It Now" items to ensure your order is processed instantly.


  • Sales Tax: eBay may automatically collect sales tax based on your state's regulations. We do not have control over these charges.


  • Order Cancellation: If you placed an order by mistake, please contact us within 1 hour. Once the order is processed or shipped, we cannot cancel it.

Free Shipping & Fast Handling:



  • Handling Time: We usually ship within 1-2 business days (excluding weekends and holidays) after payment is cleared.


  • Tracking Number: A tracking number will be uploaded to your order details as soon as the item leaves our warehouse.


  • Address Accuracy: We only ship to the confirmed address provided by eBay. Please verify your address before checkout. We are not responsible for undeliverable addresses or return shipping fees caused by incorrect addresses.


  • International Buyers: Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility.

30-Day Hassle-Free Returns: We stand behind our products. If you are not satisfied, you may return the item within 30 days of receipt.



  • Defective/Damaged Items: If the part arrives damaged or doesn't work, please send us pictures/videos first. We will offer a Full Refund or Free Replacement immediately.


  • Bought Wrong Part: If you purchased the wrong part or simply changed your mind, we accept returns, but the Buyer is responsible for return shipping costs. The item must be returned in its original, uninstalled condition.


  • Remanufactured Parts Notice: For remanufactured items, minor cosmetic wear (scratches/discoloration) on the housing is normal and does not affect performance. This is not considered a defect.


  • No Returns on Modified Parts: We cannot accept returns if the item has been modified, disassembled, or damaged due to improper installation.

We are a professional automotive parts supplier dedicated to providing high-quality replacement parts and remanufactured components. With years of experience in the industry, we specialize in Ignition Systems, Fuel Injection, and Engine Components.



  • Quality First: All our remanufactured parts (Distributors, Fuel Injectors) undergo rigorous testing (Flow Matching, Circuit Testing) before shipping.


  • Value for Money: We aim to provide OEM-level performance at an affordable price.


  • Customer Obsession: Your satisfaction is our top priority. We are here to keep your vehicle running smoothly!


We are here to help!



  • Check Fitment First: If you are not sure whether this part fits your car, please send us your VIN (Vehicle Identification Number) or your car's Make/Model/Year/Engine size before purchasing. We will check it for you within 24 hours.


  • Have an Issue? Please contact us via eBay Message BEFORE leaving neutral or negative feedback. We guarantee to solve any problem (Refund, Replace, or Technical Support) to your satisfaction.


  • Business Hours: We respond to all messages within 24 hours (Mon-Fri).

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