AZHZ Oxygen Sensor 234-5714 for Hyundai Santa Fe/Tucson 2019-2020 2.4L — Heated 5‑Wire Direct-Fit

The AZHZ 234-5714 is a direct-fit heated oxygen (O2) sensor designed to replace the factory unit on compatible Hyundai and Kia 2.4L and selected 1.6L/2.0L models for reliable air–fuel monitoring.

This aftermarket oxygen sensor from AZHZ provides the same threaded mounting and electrical connections as the original equipment part, offering a cost-effective option to restore accurate exhaust gas readings. It includes a built-in heater to help the sensor reach operating temperature quickly, supporting stable engine management and emissions control when fitted correctly to compatible vehicles.

What vehicles and locations does this AZHZ sensor fit?

The 234-5714 is engineered for specific Hyundai and Kia models and can be used in several upstream and downstream positions. Fitment covers certain Santa Fe, Santa Fe Sport, Tucson, Sorento, and Sportage model years and engine sizes; always verify the connector and thread match your vehicle before ordering.

• Compatible with 2019–2020 Hyundai Santa Fe 2.4L (AWD) and 2019 Hyundai Tucson 2.4L (AWD).
• Fits 2017–2018 Hyundai Santa Fe Sport 2.0L/2.4L and 2017–2018 Tucson 1.6L.
• Compatible with 2016–2019 Kia Sorento 2.4L (AWD) and 2017–2019 Kia Sportage 2.4L.
• Placement options include upstream (front/upper) and downstream (rear/post-catalytic) O2 locations where applicable.

How does the heater and wiring help engine performance?

This sensor incorporates a heater circuit to bring the sensing element to temperature faster, improving the speed and consistency of lambda readings after cold starts. Accurate oxygen readings enable the engine control unit to adjust fuel delivery more effectively, helping maintain balanced combustion.

• Built-in heater speeds warm-up for stable output shortly after start-up.
• Five-wire harness supports sensor signal plus heater power and ground.
• Available wire lengths (approximately 25.2 in. and 20.87 in.) suit different mounting positions.

What physical and electrical specs should I check before buying?

To ensure a trouble-free install, compare the AZHZ sensor’s connector gender, thread type, and number of wires with your original unit. The 234-5714 is a threaded, male-connector heated sensor with five wires; matching the plug shape is critical for fitment and functionality.

• Sensor type: Heated oxygen sensor (O2) with threaded mounting.
• Connector: Male-style plug — verify plug matches your harness exactly.
• Wire count: 5 wires; check harness routing and available length needed.

Is this AZHZ sensor durable and how is it constructed?

AZHZ builds this oxygen sensor using high-heat welding and enhanced sealing techniques to withstand exhaust temperatures and vibration. The design aims to provide reliable sealing at the thread and connector areas, reducing the chance of exhaust leaks or premature failure when installed properly.

• High-heat welding for improved joint strength and sealing.
• Robust construction intended for under-hood and exhaust environments.
• Backed by compatibility notes rather than OEM affiliation—verify fit.

Who is this for: This AZHZ 234-5714 oxygen sensor is meant for DIY mechanics, independent repair shops, and vehicle owners who need an affordable OEM-style replacement for compatible Hyundai and Kia models. It’s suitable for anyone replacing a failed upstream or downstream O2 sensor, provided they confirm connector type, wire count, and physical fit before purchasing to avoid returns.