Description
4X Brand OEM Up & Downstream Oxygen O2 Sensor For Mercedes-Benz C300 E350 ML350 Items Description Have any questions, please contact us first and we will do our best to solve it for you. Lifetime Warranty,feel free to buy without worries. Original standard, direct replacement for the old or broken one. Made with high quality material for maximum durability... Package included 4X Upstream + Downstream O2 Oxygen Sensor(15% increase in performance and energy) Feature High Performance Corrosion-resistant stainless steel construction PTFE filter blocks efficiency-robbing contaminants Refined zirconia element improves sensor response Superior design maximizes engine performance and fuel efficiency while reducing fuel consumption and harmful emissions Ensures smog test compliance Ready to use, Direct Replacement Built to strict quality control standards 100% Factory tested Part Number/OEM Number 234-4881, 234-5138, 234-5139 234-5107, 234-5096, 234-5091 Compatible Vehicle(for reference only) Mercedes-Benz C230 2.5l V6 2008 2009 C250 2.5l V6 2010 2011 2012 C300 3.0l V6 2008 2009 2010 2011 2012 Slk280 3.0l V6 2006 2007 2008 Slk300 3.0l V6 2009 2010 2011 C350 3.5l V6 2008 2009 2010 2011 E350 3.5l V6 (2006 2007 2008 2009)Rwd 2010 2011 Glk350 3.5l V6 (2010 2011 2012)Awd Ml350 3.5l V6 2006 2007 2008 2009 2010 2011 R350 3.5l V6 2006 2007 2008 2009 2010 2011 2012 2013 Slk350 3.5l V6 2005 2006 2007 2008 2009 2010 2011 S350 3.7l V6 2006 Gl450 4.7l V8 2007 2008 2009 2010 2011 2012 Cl550 5.5l V8 2007 2008 Cls550 5.5l V8 2007 2008 2009 2010 2011 E550 5.5l V8 (2007 2008 2009)Rwd 2010 2011 Gl550 5.5l V8 2008 2009 2010 2011 2012 Ml550 5.5l V8 2008 2009 2010 2011 R550 5.5l V8 2008 S550 5.5l V8 (2008 2009 2010)Rwd Sl550 5.5l V8 2007 2008 2009 2010 2011 2012 C63 Amg 6.3l V8 2008 2009 2010 2011 2012 2013 2014 2015 Ml63 Amg 6.3l V8 2007 2008 2009 2010 2011 R63 Amg 6.3l V8 2007 About Us We are a professional auto parts manufacturer We offer 100% customer satisfaction. Please check our store for other car and truck parts. Please leave us positive feedback if you are satisfied with the item. But in case you aren't satisfied the item, please kindly let us know, we will try our best to solve it. Thank you for reading. Highly appreciated your order and hope you have good buying experience in our store. NOTE: Please make sure the part numbers match the part you are replacing. Please check our photos and make sure the part shown looks identical to your stock one. . Shipping Payment Return Policy About Us Contact us: Shipping The item will be shipped out within SAME business day upon the payment is completed. Our regular carrier is FedEx, USPS, and UPS. Please feel free to message us through eBay if you have not received tracking info after two business days, we will be happy to provide it to you. We have two warehouses, located in California and Kentucky. The goods are dispatched from which warehouse is closest to the address. Sometimes due to inventory reasons, it will be sent from a far away warehouse. Hope you can understand. Payment We accept PayPal , your order will be shipped out when your transaction status is clear. Please do make sure your address is correct. We only ship to confirmed address. Note: If you are failed to pay in 5 business days, an Unpaid payment will be filled. Return Policy We can only issue an exchange if the item is received defective or incorrect item shipped. All exchange items MUST be in brand new condition which means the item is never installed and kept in the original packaging, otherwise a 15% restocking fees will be charged. Professional installation is highly recommended. Buyer assumes all risk on shipment and usage. We will not resend product before we get the returned item from customers. If your item is defective or damaged, let us know within 30 days of your purchase and you can return it for a new one or a full refund with no questions asked. About Us We are a professional auto parts manufacturer We offer 100% customer satisfaction. Please check our store for other car and truck parts. Please leave us positive feedback if you are satisfied with the item. But in case you aren't satisfied the item, please kindly let us know, we will try our best to solve it. Thank you for reading. Highly appreciated your order and hope you have good buying experience in our store. NOTE: Please make sure the part numbers match the part you are replacing. Please check our photos and make sure the part shown looks identical to your stock one. . Contact us: 1. Negative feedback will not help resolve any problems you have, please contact us via eBay messages before leaving negative feedback, our customer service will make best effort to help you with the issues. 2. We maintain high standards of excellenceand strive for 100% customer satisfaction! Feedback is very important to us. We request that you contact us immediately Before you give us neutral or negative feedback, so that we can satisfactorily address your concerns. Brand ACS Type Sensor Interchange Part Number 234-4881, 2344881, 234-5138, 2345138, 234-5139, 2345139, 234-5107, 2345107, 234-5096, 2345096, 234-5091, 2345091 Manufacturer Warranty Lifetime Sensor Type Oxygen Sensor Number of Sensors 4 Placement on Vehicle Front, Rear, Upstream, Downstream Features Direct Fit, Easy Installation Manufacturer Part Number 234-4881, 2344881, 234-5138, 2345138, 234-5139, 2345139, 234-5107, 2345107, 234-5096, 2345096, 234-5091, 2345091 OE/OEM Part Number 234-4881, 234-5138, 234-5139, 234-5107, 234-5096, 234-5091 Package contents: 2X Upstream + 2X Downstream Oxygen Sensors Product description: 15% increase in performance and energy Fitment Type: Direct Replacement On Jan 20, 2026 at 02:39:35 PST, seller added the following information:
I just got my shipment. The shipment was still on time even though my state has been in a severe weather situation for the week. Was brand new parts condition was as expected and packaging was very good, wasn’t over packaged, I’m sure most know what I mean. The price was excellent, can’t imagine beating it for factory new components. All and all very pleased. Seller has checked in and welcomed any contact for questions or assistance. I would do repeat business with them.
I've had nothing but positive experience with this seller. The item was as described. Unfortunately, I did not end up using the item and requested a return but that was more on me than the seller. The item shipped fast and arrived well protected and looked authentic. The seller communicated promptly and provided excellent customer service, and in the end, I was satisfied with how they handled my situation. I would definitely buy again from this seller.
I ordered 4 oxygen sensors from this seller (Upstream and downstream). seller send me all 4 upstream sensor. I contacted the seller about the issue. Seller was very responsive and replaced the items that was sent wrong. I was trying to send back the 2 wrong items that doesn't match the parts that I need. Seller send No need to send it back. They replaced it with the right parts. Highly recommend seller.
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