ATBIZZLE Air Fuel Ratio & O2 Sensor 2‑Piece Set for Hyundai/Kia 1.6L — Upstream & Downstream, Stainless Steel

Two ATBIZZLE sensors replace both upstream air–fuel ratio and downstream oxygen monitoring on compatible 1.6L Hyundai and Kia models for restored engine control and emissions sensing.

The ATBIZZLE 2-piece sensor set includes an upstream air–fuel ratio sensor and a downstream oxygen (O2) sensor engineered to work with specified 2012–2017 Hyundai and 2012–2016 Kia 1.6L engines. Each sensor combines ceramic sensing elements and corrosion-resistant stainless steel housings, and arrives ready for installation with pre-applied anti-seize on the threads. This set is sold as a matched pair to replace the factory upstream and downstream units and help ensure reliable signal feedback to the vehicle’s engine management system.

Which vehicles and engine layouts are these sensors compatible with?

These sensors are matched to naturally aspirated 1.6L four-cylinder engines used across certain Hyundai and Kia lineups. Compatibility is determined by year, model, engine code, and the sensor’s connector and wire length.

• Hyundai Accent 2012–2017 L4 1.6L
• Hyundai Veloster 2012–2015 (and selected 2013–2017 model years) L4 1.6L
• Kia Rio 2012–2016 L4 1.6L
• Kia Soul 2012–2016 L4 1.6L

How are these sensors built and what materials improve durability?

ATBIZZLE sensors use high-temperature ceramic sensing elements with precious-metal coatings to detect oxygen levels quickly and accurately. The external housings are fabricated from 310S stainless steel for improved corrosion and heat resistance, and each thread is coated with an anti-seize layer for easier installation and future removal.

• Ceramic sensing core for rapid oxygen response
• Precious metal-coated electrodes for stable signal output
• 310S stainless-steel housing for long-term corrosion resistance
• Pre-applied anti-seize for thread protection and straightforward fitment

Which part numbers does this ATBIZZLE set replace and how do I confirm fitment?

This two-piece set is listed to supersede several common OEM and aftermarket reference numbers used for upstream and downstream sensors. Before ordering, compare the original sensor’s connector, wire length, and part number to guarantee a match for your vehicle.

• Common cross-reference numbers: 234-5055, 234-4568 and equivalent OEM codes
• Also replaces multiple OEM references beginning with 39210- and 392102B- variants
• Verify connector type, wire length, engine configuration, and installation position

What warranty and support are included with the purchase?

ATBIZZLE backs this sensor pair with an 18-month unlimited mileage guarantee and offers customer support to confirm compatibility or help resolve issues. Contact the seller directly if you need assistance identifying the correct sensor or have concerns after installation.

• 18 months unlimited mileage warranty coverage
• Pre-sale compatibility assistance available on request
• Support for returns or exchanges if unit is incompatible

Who is this for: This ATBIZZLE sensor pair is intended for do-it-yourself mechanics, independent repair shops, and vehicle owners who need to replace both the upstream air–fuel ratio sensor and downstream O2 sensor on compatible 1.6L Hyundai and Kia vehicles. It is a practical replacement option when OEM part numbers match and you require durable housings, ready-to-install threads, and a backed warranty for peace of mind.