A-Premium Downstream O2 Oxygen Sensor for Hyundai & Kia 1.6L — Heated 4-Wire, 700mm Lead

A-Premium Downstream O2 Oxygen Sensor (B1S2) is a direct-fit, heated 4-wire replacement designed for select Hyundai and Kia 1.6L models to restore accurate exhaust oxygen readings and support emissions control systems.

This replacement downstream (bank 1, sensor 2) oxygen sensor from A-Premium is built to factory-style specifications for fit and function. It’s a heated, threaded unit with a 4-wire male connector and a 700 mm overall lead length, boxed and ready for installation. The part covers many common Hyundai and Kia 1.6L L4 applications and ships with a one-year unlimited-mileage warranty for added peace of mind.

Which vehicles does this oxygen sensor fit?

The A-Premium Downstream O2 Sensor is matched to a range of Hyundai and Kia compact models that use a downstream bank 1 sensor. Check the vehicle year, engine size, and connector before ordering to ensure compatibility.

• Hyundai: Accent (2012–2019), Elantra (2017–2022 variants), Elantra GT (2018), Ioniq (2017–2022), Kona (2018–2021), Sonata (2015–2019), Tucson (2016–2018), Veloster (2012–2017)
• Kia: Forte Koup (2014–2016), Forte5 (2014–2018), Niro (2017–2021), Optima (2016–2020), Rio (2012–2015, 2018–2019), Soul (2012–2020)
• Verify engine: 1.6L L4 on listed model years for a correct match.

How is this sensor built and what are the key specs?

This replacement sensor follows common OEM-style construction to meet performance expectations for downstream oxygen monitoring. It is a heated sensor with four wires, threaded mounting, and a male connector for straightforward swapping with the original part.

• Wire count: 4 (heated sensor configuration for faster warm-up)
• Overall lead length: 700 mm to reach factory harness locations
• Mounting: threaded for direct installation into the exhaust pipe or manifold
• Connector: male, designed to plug into original vehicle harness without splicing

Will this part replace my OEM reference number?

The A-Premium part lists multiple cross-reference numbers commonly used for identification and parts lookup. If your OEM number matches one of the references, this sensor is likely a compatible direct replacement.

• Included reference numbers: 15733, 16754, 1900-545760, 250-24982, 234-4568
• Packaged quantity: single oxygen sensor, boxed for protection
• Always compare connector shape, thread pitch, and wire count with your original sensor before installation

This A-Premium oxygen sensor is sold as a brand-new unit and backed by a 1-Year Unlimited-Mileage Warranty. The warranty and boxed packaging help ensure you receive a ready-to-install component and support if any issues arise.

Who is this for? This downstream A-Premium O2 sensor is intended for DIY mechanics, independent repair shops, and fleet managers who need an affordable, OEM-style replacement for Hyundai and Kia 1.6L cars and crossovers. It suits anyone replacing a failing downstream (B1S2) sensor, matching listed model years and engine type, and who wants a heated 4-wire sensor with a direct-fit connector and standard threaded mounting.