NTK 25178 Oxygen Sensor - Downstream Right

Direct Fit Oxygen Sensor for Hyundai Tiburon

NTK 25178 is a direct fit heated oxygen sensor for specific Hyundai Tiburon applications. It is built for downstream right placement and matches OE-style fitment for 2003-2008 Hyundai Tiburon models listed below.

Key Features

• Direct Fit Oxygen Sensor for specific applications
• Heated sensor design for faster operating response
• 4-wire configuration with 24.75 in. wiring harness length
• Threaded mounting type with 18 mm thread diameter
• Downstream right position for Hyundai Tiburon B1S2 applications
• NTK part number 25178

Product Details

NTK 25178 is part of the NTK Direct Fit Oxygen Sensor line, a product line focused on OE-style replacement sensors for import and domestic vehicles. NTK uses ceramic sensor technology and extensive manufacturing testing to deliver fit, form, and function that align with original equipment requirements. For Hyundai Tiburon owners, this sensor is specified for downstream right placement on 2003 and 2004-2008 models, including B1S2 applications.

This part cross-references Bosch 15653 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn downstream sensor
• Slow sensor response after extended service life
• Emission control faults tied to B1S2 monitoring
• OE replacement needs for Hyundai Tiburon downstream right service

Installation Notes

Verify the connector, wire count, and downstream right location before installation. This NTK 25178 sensor uses a threaded mount and a 4-wire heated design, so matching the original sensor configuration is important for proper installation on the Hyundai Tiburon. Confirm the vehicle build details for 2003 applications noted as from 1/03.

Quality Assurance

NTK is a major original equipment oxygen sensor manufacturer and supplies sensors built to meet or exceed OE specifications. Each sensor is extensively tested during manufacturing to support reliable operation and consistent performance.