Car Oxygen Sensor Lambda Sensor O2 Snesor Part Number 39210-2B320 For Hyundai / KIA

• This is a 4-wire heated switching-type oxygen sensor manufactured to Hyundai and Kia's original equipment standards. The four wires serve two independent circuits — two for the internal heater and two for the sensor signal and ground.
• The built-in heating element quickly brings the ceramic sensing tip up to operating temperature after a cold start, enabling the ECU to enter closed-loop fuel control sooner and reduce cold-start emissions.
• As a downstream (post-catalyst) diagnostic sensor, it is installed after the catalytic converter and monitors catalyst efficiency by comparing its signal with the upstream sensor.
• The sensor is constructed with a stainless-steel shell that reduces rusting and provides greater dependability. The centre ceramic element is composed of Zirconium Oxide, Alumina, and Yttrium Oxide. The platinum coating is applied using vapour deposition, whilst a Spinel coating on the outer platinum layer prevents solid particles in the exhaust gas from damaging the component.
• The sensor features a rectangular 4-pin connector with a cable length of approximately 495 mm and a sensor body length of 135 mm.
• Sensor resistance: 4 Ω.
• All sensors are 100% tested to meet or exceed original equipment quality standards.
• Also known as: O2 Sensor, Lambda Sensor, HEGO Sensor, UEGO Sensor, Planar Sensor, Exhaust Gas Sensor.

The following OE numbers are directly interchangeable with 39210-2B320. These numbers are frequently grouped together across multiple aftermarket catalogues as direct equivalents.

• The Kerr Nelson KNL991 aftermarket sensor lists HYUNDAI 392102B220, 392102B320, 392102B325, 392102B350, 392102B355 and KIA 392102B290, 392102B320, 392102B323, 392102B326, 392102B350, 392102B355 as OEM references, with 495 mm cable length, rectangular connector, 4-pole design, and a 2-year warranty.
• The Intermotor 64875 aftermarket sensor lists HYUNDAI 392102B310, 392102B320 and KIA 3921003030, 392102B310, 392102B320 as OEM references, with rectangular connector, 4-pin design, and 0.084 kg net weight.
• The Lemark LLB861 aftermarket sensor lists HYUNDAI 3921003030, 392102B310, 392102B320 and KIA 3921003030, 392102B310, 392102B320 as OEM references.
• The Lucas LEB5393 aftermarket sensor lists HYUNDAI 392102B320 and KIA 392102B320 as OEM references, with 495 mm cable length, rectangular connector, 4-pin design, and 0.09 kg net weight.
• The Blue Print ADG070105 aftermarket sensor lists HYUNDAI ACCENT IV (RB) and ELANTRA V Sedan (MD) applications with the 1.6L G4FC engine (91 kW).
• The FACET 10.8346 and EPS 1.998.346 aftermarket sensors list 39210-2B320 as a compatible OE number.
• The KAWE 884543502 aftermarket sensor lists FIAT, HYUNDAI 39210-2B320, HYUNDAI (BEIJING), KIA 39210-2B320, KIA (DYK) as OE references.
• Always physically compare your old sensor's connector shape (rectangular), pin count (4), cable length (495 mm), and thread size (M18 × 1.5) before purchasing.

This Lambda Sensor is an original equipment component used across a range of Hyundai and Kia vehicles. Based on extensive cross-reference data, the sensor is installed in the rear (downstream / post-catalyst / after catalytic converter) position.

• This is a rear (downstream / post-catalyst) oxygen sensor. It is installed after the catalytic converter and serves as a diagnostic probe for catalyst efficiency monitoring.
• Primary applications include Hyundai Accent (2012-2016), Hyundai Veloster (2012-2016), Hyundai Elantra MD (2011-2016), Kia Rio (2012-2015), Kia Soul (2012-2015), Kia Cee'd JD (2012-2016), and Kia Cerato YD (2013-2016) with the 1.6L GDI (Gamma) engine.
• Additional applications include Hyundai i20, i30, ix25/Creta, ix35/Tucson, Solaris, HB20, Eon, Atos Prime, Genesis (selected models), and Ioniq Hybrid; Kia Carens, K4 (China market).
• How to verify: Locate your vehicle's catalytic converter. This sensor is installed in the pipe after the catalytic converter. If your faulty sensor is located before the converter, you need the upstream sensor 39210-2B310 instead.
• Not compatible with diesel engines — diesel applications use different sensors with different calibration parameters.
• The vehicle fitment information above is a guide only. Always confirm compatibility using your vehicle's VIN or by physically inspecting your old sensor's position, connector shape, and cable length before ordering.