Dasbecan Oxygen O2 Sensor Kit for Nissan Altima 2013-2017 2.5L — Upstream & Downstream, OEM Fit

Dasbecan Oxygen O2 Sensor set replaces the upstream and downstream sensors on Nissan Altima 2.5L models (2013–2017), restoring accurate air-fuel readings and emissions monitoring.

If your Altima’s check engine light, fuel economy, or emissions performance point to a failing oxygen sensor, this Dasbecan two-piece sensor kit is built to match OEM fit and function. The pair includes the upstream (pre-catalyst) and downstream (post-catalyst) sensors that directly replace part numbers 234-9133 and 234-4905, providing a straightforward plug-and-play swap without wiring changes.

How will these sensors affect my Altima’s performance?

Oxygen sensors measure residual oxygen in exhaust gases so the engine control unit can adjust fuel delivery. Replacing worn sensors helps the ECU get accurate feedback, which can stabilize idle, reduce rough running, and improve throttle response.

• Restores accurate air-fuel ratio signals to the engine computer
• Improves consistency of idle and acceleration behavior
• Helps maintain catalytic converter efficiency

Are these sensors a direct fit for my Nissan Altima?

Yes—the Dasbecan sensors are manufactured to meet OEM standards and are listed as direct replacements for the referenced Nissan part numbers. They fit Altima Base, SL, S, SV 2.5L-l4 models from 2013 through 2017 and the SR 2.5L-l4 for 2016–2017.

• Compatible with 2.5L 4-cylinder Altima models (2013–2017)
• Includes both upstream (234-9133) and downstream (234-4905) sensors
• Plug-and-play connector design—no splicing required

What durability and environmental protections do these sensors offer?

Dasbecan builds these sensors with corrosion- and heat-resistant materials and uses a production process designed to improve durability. The housing and sealing resist water and dust infiltration, maintaining sensor responsiveness under typical driving conditions.

• Corrosion-resistant construction for longer service life
• Heat-tolerant design to withstand exhaust temperatures
• Waterproof and dustproof sealing for reliable field performance

How difficult is installation—do I need special tools?

Installation is intended to be straightforward: the sensors are direct replacements that use the vehicle’s existing wiring and connectors. Basic automotive tools and an oxygen sensor socket will typically suffice, and many DIYers can complete the swap in an hour or less.

• Direct replacement, plug-and-play wiring compatible with stock harness
• Requires standard hand tools and an O2 sensor socket for removal/installation
• Includes one upstream and one downstream sensor in the package

Who is this for? This Dasbecan O2 sensor set is aimed at Altima owners, independent mechanics, and repair shops needing a reliable, cost-effective replacement for failing oxygen sensors on 2.5L Nissan Altima models from 2013–2017. Choose this kit if you want OEM-style fitment, durable construction, and an easy swap to address check-engine codes, poor fuel economy, or inconsistent engine running.