【Wide Vehicle Compatibility】: Compatible with 2013-2017 Nissan Altima 2.5L. Please use the 'Amazon Confirmed Fit' tool to verify your vehicle before purchasing. 【OEM Replacement Compatibility】: This premium oxygen sensor set includes both upstream and downstream sensors (2-pack) that directly replace OEM numbers 234-9133, Upstream / 234-4905 Downstream. Please carefully compare your original sensor's plug configuration with our product images before ordering, as differences in connector type will prevent proper installation. 【OEM Design & Precision Manufacturing】: Engineered to meet or exceed OEM design and process standards. Manufactured on fully automated production lines with precise process control and in-line automated inspection, ensuring 100% tested performance for consistent quality and reliable operation. 【 Fast Heating & Rapid Sensor Activation】: Features an innovative symmetrical chip structure that positions the heating element closer to the signal circuit, significantly improving heat transfer efficiency. Delivers faster warm-up and quicker sensor activation for improved cold-start response. Provides stable and accurate oxygen content feedback to the ECU, helping optimize air-fuel ratio, improve fuel efficiency, and maintain smooth engine performance. 【Durable Construction for Exhaust Environments】: Constructed with a co-fired porous ceramic protective layer using premium imported materials from Japan and France. Designed to maintain stable sensor performance and signal consistency over extended use in high-temperature exhaust environments. 【Hassle-Free Installation】: Designed as true direct-fit replacements with OE-spec connectors and pre-coated anti-seize threads, these sensors install quickly and securely without modifications. The complete harness system arrives ready for plug-and-play installation, saving you time and frustration. Key Features

✔ Support Proper Engine Operation & System Stability
A malfunctioning oxygen sensor may be associated with drivability concerns and Check Engine Light warnings.
This upgraded oxygen sensor is designed to:

* Provide consistent oxygen signal feedback to the ECU
* Support proper air-fuel ratio monitoring
* Help maintain stable engine operation
* Deliver consistent sensor response during normal driving conditions
* Address common oxygen sensor–related warning indicators

✔ Fast Warm-Up & Stable Sensor Response

* Rapid heating for quicker sensor activation
* Reliable performance after cold starts
* Consistent signal output under varying driving conditions
* Stable response during city and highway driving
* Designed for continuous post-start operation

✔ Durable Construction for Exhaust Environments

* Advanced porous ceramic protective layer
* Designed for stable signal performance over time
* Suitable for high-temperature operating environments
* Engineered to withstand vibration and thermal cycling
* Built for long-term durability and reliable operation

✔ OEM-Quality Fit & Reliable Replacement

* Manufactured to OEM design and production standards
* Fully automated manufacturing with functional testing
* Direct-fit replacement with no modifications required
* OE-style connectors for secure installation
* Consistent quality and dependable performance

Replaces OE Number:
234-9133, 234-4905

✔ Wide Vehicle Compatibility
Fits for Nissan:
2013-2017 Altima Base Sedan 4-Door 2.5L 2488CC 152Cu. In. l4 GAS DOHC Naturally Aspirated
2013-2017 Altima SL Sedan 4-Door 2.5L 2488CC 152Cu. In. l4 GAS DOHC Naturally Aspirated
2016-2017 Altima SR Sedan 4-Door 2.5L 2488CC 152Cu. In. l4 GAS DOHC Naturally Aspirated
2013-2017 Altima S Sedan 4-Door 2.5L 2488CC 152Cu. In. l4 GAS DOHC Naturally Aspirated
2013-2017 Altima SV Sedan 4-Door 2.5L 2488CC 152Cu. In. l4 GAS DOHC Naturally Aspirated