NTK 25219 Oxygen Sensor - Downstream Left

Direct Fit Oxygen Sensor for Hyundai and Kia

NTK 25219 is a direct fit heated oxygen sensor for specific downstream left applications on select Hyundai and Kia vehicles. It is built for the B2S2 location and matches OE-style fit, form, and function for straightforward replacement service.

Key Features

• Heated oxygen sensor design for faster operating readiness
• Specific fit for direct replacement in the downstream left position
• 4-wire configuration with a 12.2500 wiring harness length
• Threaded mounting type with 18.000 thread diameter
• Built by NTK, a major OE oxygen sensor supplier

Product Details

NTK Direct Fit Oxygen Sensor 25219 is engineered for import applications where accurate exhaust feedback matters. NTK controls ceramic production from raw material through finished sensor manufacturing, and each sensor is extensively tested during production to help meet or exceed OE specifications. This part cross-references Bosch 18045 and DENSO Auto Parts 234-4456 for the same application. It is a direct replacement oxygen sensor for Hyundai Santa Fe, Hyundai Santa Fe XL, Kia Sorento, Kia Azera, Kia Cadenza, and Kia Sedona applications listed below.

Vehicle Fitment

• Fits 2013-2019 Hyundai Santa Fe XL, downstream left.
• Fits 2013-2018 Hyundai Santa Fe, downstream left.
• Fits 2014-2018 Kia Sorento, downstream left.
• Fits 2012-2017 Hyundai Azera, downstream left.
• Fits 2014-2016 Kia Cadenza, downstream left.
• Fits 2015 Kia Sedona, downstream left. B2S2; To 1/26/15; OE MFR: NTK.
• Fits 2014 Kia Sedona, downstream left.
• Fits 2011-2012 Kia Sedona, downstream left.

Common Replacement Uses

• Replacement for a failed downstream oxygen sensor
• Correction for oxygen sensor fault codes related to B2S2
• Restoration of proper exhaust feedback for engine management
• Service replacement for worn or contaminated sensor elements
• Direct-fit repair for Hyundai and Kia emissions systems

Installation Notes

Confirm the downstream left B2S2 location before installation and match the connector, thread size, and harness length to the original sensor. Use the vehicle-specific fitment listing to verify year, make, and model before ordering. Proper sensor removal and installation practices help prevent thread damage and wiring strain.

Quality Assurance

NTK is part of the NGK family of products and is recognized as a leading OE oxygen sensor manufacturer. The 25219 is manufactured and tested to support OE-level fit and reliability for the listed Hyundai and Kia applications.