A-Premium O2 Oxygen Sensor for Nissan Altima 2013–2018 2.5L — Downstream Heated 4-Wire

This replacement downstream oxygen (O2) sensor from A-Premium is engineered to match the fit and function of your vehicle’s original equipment. Designed for Nissan Altima L4 2.5L models (specific fitment listed below), the sensor uses a heated element and a 4-wire connector so it reaches operating temperature quickly and communicates accurately with the engine control module. The unit ships boxed and includes a threaded mounting style and a female connector so installation is straightforward for DIYers and technicians alike.

What exact Nissan models does this A-Premium oxygen sensor fit?

The sensor is intended for downstream use on Nissan Altima L4 2.5L models across multiple years. It replaces the factory part numbers listed and is matched to the vehicle’s oxygen-sensing system for proper performance.

• Fitment: Altima 2013 L4 2.5L Sedan (downstream)
• Fitment: Altima 2014 L4 2.5L 4-Door (downstream)
• Fitment: Altima 2015–2018 L4 2.5L (downstream)
• Reference numbers: 234-4905, 2344905, 226A03TA0B

How is this oxygen sensor constructed and why does that matter?

The A-Premium sensor uses durable materials and a heated sensing element to improve durability and bring the sensor up to operating temperature faster. A threaded mounting and a female 4-wire connector match OEM-style installation, minimizing modifications and ensuring reliable electrical connections.

• Sensor type: heated O2 sensor for faster warm-up
• Wiring: 4-wire design for proper signal and heater control
• Mounting: threaded body for secure, leak-free fit
• Connector gender: female to complement factory harnesses

How difficult is installation and what tools are needed?

Installation is intended to be quick and simple; the sensor threads into the exhaust and connects to the OEM harness with no splicing required. Basic hand tools typically complete the job, and no special calibration is needed after replacement.

• Tools: common oxygen sensor socket, ratchet, penetrating oil if needed
• Time: generally under one hour for someone with basic mechanical skills
• Preparation: allow exhaust to cool and disconnect battery if desired
• No additional programming required for most installations

What warranty and quality assurances come with the A-Premium O2 sensor?

A-Premium backs this oxygen sensor with a one-year unlimited-mileage guarantee, reflecting confidence in the manufacturing and materials. The sensor arrives packaged in a protective box to reduce handling damage during shipping.

• Warranty: one-year unlimited-mileage guarantee
• Packaging: boxed to protect sensor and connector during transit
• Quality: constructed from premium materials for extended service life
• Support: A-Premium offers additional automotive accessories and assistance

Who is this for: This A-Premium downstream O2 oxygen sensor is for Nissan Altima owners, mechanics, and DIY enthusiasts who need an OEM-style replacement for 2013–2018 L4 2.5L models. Choose this sensor if you want a direct-fit, heated unit with a 4-wire connector, reliable threaded mounting, and a one-year warranty for peace of mind on the road.