Dasbecan Oxygen O2 Sensor Kit for Nissan Altima 2.5L (2013–2017) — Upstream & Downstream Direct-Fit

Dasbecan Oxygen O2 Sensor set replaces worn upstream and downstream sensors on Nissan Altima 2.5L models (2013–2017) for restored emission sensing and smoother engine response.

The Dasbecan Oxygen O2 Sensor kit contains one upstream and one downstream sensor engineered as direct-fit replacements for Nissan Altima 2.5L engines from 2013 through 2017 (including Base, SL, S, SV and SR trims where applicable). Built to meet OEM form, fit and function, these sensors are designed to plug into the factory harness without modifications. They are manufactured with corrosion- and heat-resistant materials and sealed housings for dependable operation in underhood conditions.

How will these sensors affect my Altima’s performance?

Oxygen sensors provide the engine control unit (ECU) with exhaust gas oxygen data so fuel delivery and emissions control can be adjusted. Replacing failed or aging sensors returns accurate readings to the ECU, which helps maintain proper air–fuel ratio and can reduce rough idling, poor fuel economy, and check-engine codes related to O2 circuits.

• Direct-fit upstream and downstream sensors for proper ECU feedback
• Restores accurate oxygen readings for better combustion balance
• Can help clear oxygen-sensor-related diagnostic trouble codes

Which Altima models and part numbers does this set replace?

This Dasbecan kit is intended for Nissan Altima 2.5L-l4 model years 2013–2017. It replaces part numbers commonly listed as 234-9133 (upstream) and 234-4905 (downstream), covering Base, SL, S, SV, and SR trims where the 2.5L engine is fitted.

• Compatible years: 2013, 2014, 2015, 2016, 2017
• OEM replacement numbers: 234-9133 and 234-4905
• Covers multiple trim levels using the 2.5L four-cylinder

What are the key construction and durability features?

Dasbecan sensors are manufactured with a focus on environmental resistance and stable output. Sealed housings, corrosion-resistant connectors, and heat-tolerant sensing elements help the units withstand exhaust temperatures and road contaminants, while modern production methods aim to keep response time consistent with OEM expectations.

• Waterproof and dust-proof housings for underbody exposure
• Corrosion- and heat-resistant materials for long service life
• Manufactured to meet OEM performance and fit standards

How difficult is installation and what’s included in the package?

Installation is straightforward for technicians and experienced DIYers: these are direct replacements designed to plug into the factory harness without splicing. The kit includes both the upstream and downstream sensors so both sensing locations are refreshed at once.

• Plug-and-play design — no wiring changes required
• Package includes 1 upstream sensor (234-9133) and 1 downstream sensor (234-4905)
• Recommended to replace both sensors together if one shows age-related wear

Who is this for: The Dasbecan Oxygen O2 Sensor set is intended for Nissan Altima owners and independent mechanics who need a reliable, direct-fit replacement for failing or old oxygen sensors on the 2.5L four-cylinder models from 2013 to 2017. It’s suitable for drivers seeking OEM-style fitment, those troubleshooting O2-related check-engine codes, or anyone replacing exhaust sensors as part of routine maintenance or emissions repairs.