NTK 24059 Oxygen Sensor - Upstream

Direct Fit Oxygen Sensor for Import Applications

NTK 24059 is a direct fit heated oxygen sensor built for specific applications in the emission control system. It is engineered for upstream placement and uses a 4-wire, flange-mounted design with an 18 mm thread diameter and a 19.75 in. wiring harness length.

Compatible with select 1989-1992 Toyota Corolla, 1990-1992 Geo Prizm, and 1990-1991 Toyota Pickup upstream applications, NTK 24059 supports accurate exhaust feedback for Federal and California emissions configurations where listed.

Key Features

• Direct fit oxygen sensor for specific vehicle applications
• Heated sensor design for faster operating temperature
• 4-wire configuration
• Flange mounting type
• 18 mm thread diameter
• 19.75 in. wiring harness length
• Upstream placement for listed applications

NTK Direct Fit Product Line

NTK Direct Fit Oxygen Sensors are part of NTK’s OE-focused sensor line for import and domestic vehicles. As a long-time original equipment supplier, NTK applies ceramic manufacturing expertise and application-specific engineering to deliver fit, form, and function aligned with OE requirements.

Detailed Description

NTK 24059 is a replacement oxygen sensor for vehicles that require a specific-fit, heated upstream sensor with flange mounting. It is listed for 1989-1991 Toyota Corolla upstream, 1990-1992 Geo Prizm upstream, and 1990-1991 Toyota Pickup upstream applications. This part cross-references Bosch 15711 for the same application. The sensor is manufactured and tested to meet or exceed OE specifications, making it a practical choice for restoring exhaust monitoring performance on the listed Toyota Corolla, Geo Prizm, and Toyota Pickup applications.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn upstream sensor
• Emissions test failures tied to sensor response issues
• Rough idle or drivability concerns caused by inaccurate exhaust readings
• Slow sensor warm-up on heated oxygen sensor applications

Installation Notes and Tips

Verify the vehicle year, make, model, emissions configuration, and upstream position before ordering. Confirm the flange mount, 4-wire connector layout, 18 mm thread diameter, and harness length match the original sensor. For best results, inspect the exhaust bung and wiring routing before installation and compare the old sensor connector to the replacement part.

Quality Assurance

NTK manufactures oxygen sensors with OE application coverage and extensive production testing to support quality and reliability that meet or exceed OE specifications.