HQPASFY Oxygen O2 Sensor Kit for Hyundai & Kia 1.6L — 2-Pack Upstream 234-5055 & Downstream 234-4568, Stainless Steel

HQPASFY Oxygen O2 Sensor 2-pack (234-5055 upstream & 234-4568 downstream) replaces factory sensors to restore accurate air-fuel monitoring for compatible Hyundai and Kia 1.6L vehicles.

When the engine control module (ECM) receives incorrect oxygen readings, drivability and fuel economy can suffer. This HQPASFY two-piece O2 sensor kit includes both upstream and downstream units designed to match the OE fitment for 2012–2015 Hyundai Accent, Veloster, Kia Rio, and Soul models with the 1.6L L4 engine. Built from corrosion-resistant materials and featuring a robust, laser-welded stainless-steel body, these sensors aim to provide dependable, long-term service and simplify replacement by using common OE part numbers.

How will these sensors affect engine performance and fuel use?

Oxygen sensors report exhaust oxygen levels to the vehicle’s ECU, which adjusts fuel injection and ignition timing. Replacing worn or slow sensors helps the ECU maintain the intended air-fuel ratio, improving throttle response and helping to stabilize idle. While results vary with vehicle condition, restoring correct sensor operation often reduces rough idle, hesitation, and excessive fuel consumption.

• Accurate air–fuel readings for better combustion control.
• Upstream sensor (234-5055) monitors pre-catalyst exhaust gases.
• Downstream sensor (234-4568) helps verify catalytic converter efficiency.
• Can alleviate symptoms like low-speed shaking and power loss when old sensors are failing.

Which vehicles and part numbers are these sensors compatible with?

This HQPASFY kit targets specific Hyundai and Kia 1.6L L4 applications and cross-references common OE numbers for straightforward replacement. Fitment covers model years where the listed engines were factory-installed. Use the cross-reference list to confirm compatibility before purchase.

• Hyundai: Accent 2012–2014, Veloster 2012–2014 (1.6L L4).
• Kia: Rio 2012–2014, Soul 2012–2015 (1.6L L4).
• Replaces upstream numbers: 234-5055, 2345055, 24326, 39210-2B210, 39210-2B410.
• Replaces downstream numbers: 234-4568, 2344568, 39210-2B220, 392102B220.

What materials and construction features improve sensor longevity?

These sensors are engineered to withstand elevated exhaust temperatures and corrosive environments common under the vehicle. A double laser-welded stainless-steel housing, high-temperature resistant internal components, and sealed connections reduce the risk of short service life due to contamination or moisture. The result is a sensor intended to provide a dependable lifespan comparable to OEM parts.

• Double laser-welded stainless-steel body for secure sealing.
• High-temperature corrosion-resistant internals to resist exhaust contaminants.
• Submersible-level sealing to protect electrical connections from moisture and road debris.
• Pre-matched electrical connector design for direct fitment in listed models.

Is there support or warranty if I encounter problems after installation?

HQPASFY includes a 24-month warranty to back product reliability and customer support. If a sensor develops a defect within the warranty period, the company offers assistance and replacement through its support channels. Keep purchase records and vehicle details to streamline any warranty inquiries.

• 24-month limited warranty covering manufacturing defects.
• Customer support available for fitment and troubleshooting questions.
• Recommended to retain proof of purchase and vehicle information for claims.

Who is this for: This HQPASFY Oxygen Sensor 2-pack is intended for DIY owners, independent mechanics, and fleet technicians who need a direct-fit replacement for Hyundai Accent and Veloster (2012–2014) or Kia Rio and Soul (2012–2015) 1.6L engines. It suits buyers seeking OE cross-referenced parts that prioritize corrosion resistance and sealed construction, plus those who prefer the convenience of replacing both upstream and downstream sensors together to re-establish reliable emissions and engine management feedback.