TAUTOY O2 Oxygen Sensor Kit for Kia Rio 2012-2018 — Upstream & Downstream Pair, Direct-Fit 1.6L

TAUTOY's two-piece oxygen sensor kit replaces both upstream and downstream O2 sensors for Kia Rio (2012–2018) to restore accurate air-fuel monitoring and help the engine control module regain proper fuel trims.

This matched pair includes one upstream (pre-catalyst) sensor and one downstream (post-catalyst) sensor engineered to match the fit and function of common OEM part numbers such as 234-5055 and 234-4568. Each sensor uses a laser-welded stainless steel housing and calibrated sensing element to deliver reliable voltage response across operating temperatures. The kit is offered with a one-year warranty and is designed for direct fitment on compatible Hyundai and Kia 1.6L L4 engines without modification.

How do these O2 sensors restore engine performance?

Oxygen sensors report exhaust oxygen content to the vehicle’s engine control unit so it can adjust fuel delivery. Replacing worn sensors restores accurate oxygen readings, enabling the ECU to fine-tune air-fuel ratios and reduce rough idling or erratic fuel economy caused by aging sensors.

• Includes both upstream (234-5055) and downstream (234-4568) sensors for coordinated readings
• Fast-response sensing element improves fuel trim correction
• OEM-compatible connector and thread for direct replacement

Are these TAUTOY sensors compatible with my car?

The kit fits Kia Rio and Kia Soul models with 1.6L L4 engines from approximately 2012–2018 and also matches several Hyundai Accent and Veloster applications from 2012–2017. Confirm compatibility by checking your vehicle’s OEM part numbers (such as 39210-2B110 or 2345055) and connector style before ordering.

• Direct-fit for Kia Rio 2012–2018 (1.6L L4) and Kia Soul 1.6L variants
• Cross-references OEM numbers: 234-5055, 234-4568, 39210-2B110, 39210-2B210, etc.
• Electrical connector and thread size designed for plug-and-play installation

What materials and construction ensure durability?

TAUTOY builds these sensors with double laser-welded stainless steel housings and robust internal elements to resist vibration, heat cycling, and exhaust contaminants. That construction reduces premature failure and keeps the sensing element sealed for consistent operation over time.

• Double laser-welded stainless steel body for corrosion resistance
• Calibrated sensing element for reliable voltage output across temperatures
• Protective shroud and screens to reduce soot and particulate exposure

What comes in the box and what warranty is provided?

The package contains two oxygen sensors: one upstream (pre-cat) and one downstream (post-cat), each labeled for location. TAUTOY backs the kit with a one-year warranty to cover manufacturing defects under normal use.

• 2-piece kit: 1x upstream (234-5055) and 1x downstream (234-4568)
• Includes sensors ready for installation with OEM-matching connectors
• 1-year limited warranty from TAUTOY

Who is this for: This TAUTOY sensor kit is aimed at DIY mechanics, independent shops, and fleet technicians who need a cost-effective, direct-replacement solution for oxygen sensors on Kia Rio and similar Hyundai/Kia 1.6L L4 models. Choose this kit if you want matched upstream and downstream sensors with OEM cross-references, durable stainless-steel construction, and a one-year warranty for routine maintenance or repair tasks.