NTK 24411 Oxygen Sensor - Upstream

Direct Fit Oxygen Sensor for Toyota and Scion

The NTK 24411 direct fit oxygen sensor is a heated, specific-fit replacement built for select Toyota and Scion applications. It is engineered for upstream Bank 1 Sensor 1 locations on the 2003-2005 Toyota Echo and 2004-2006 Scion xA and xB.

NTK’s Direct Fit Oxygen Sensor line focuses on OE-style fit, form, and function, with application-specific wiring and threaded mounting for straightforward replacement. The NTK 24411 is built for import and domestic coverage and is manufactured with ceramic sensor technology and extensive testing for consistent performance.

Key Features

• Direct fit oxygen sensor for specific applications
• Heated sensor design for faster operating readiness
• 4-wire configuration with 13.75 in. wiring harness length
• 18 mm threaded mounting type
• Upstream Bank 1 Sensor 1 placement
• OE-style replacement for select Toyota Echo, Scion xA, and Scion xB applications

Detailed Description

NTK part number 24411 is a direct replacement oxygen sensor for vehicles that require an upstream, heated, 4-wire sensor with a threaded mount. It is listed for Fits 2004-2006 Scion xA, Upstream; Fits 2004-2006 Scion xB, Upstream; and Fits 2003-2005 Toyota Echo, Upstream. This part cross-references Bosch 15274 for the same application.

As part of NTK’s Direct Fit Oxygen Sensor line, this sensor is built to match OE application requirements and support accurate exhaust feedback in the engine management system. The design is focused on proper fitment for the Toyota Echo and Scion xA/xB platforms, helping maintain the correct sensor location and connector layout for replacement service.

What This Sensor Helps Address

• Check engine light related to upstream oxygen sensor faults
• Slow or inaccurate air-fuel ratio feedback
• Rough idle or drivability issues tied to sensor signal problems
• Failed emissions inspection caused by oxygen sensor malfunction
• Replacement needs for damaged wiring or worn sensor elements

Installation Notes and Tips

Confirm the vehicle’s original sensor position before ordering, since this part is specified for upstream Bank 1 Sensor 1 use. Verify the 4-wire connector style, 18 mm thread diameter, and harness length against the original sensor before installation. For best results, inspect the exhaust threads and wiring routing during replacement on the Toyota Echo, Scion xA, or Scion xB.

Quality Assurance

NTK is a major original equipment oxygen sensor supplier and uses manufacturing controls and testing to help ensure the sensor meets or exceeds OE specifications. The Direct Fit Oxygen Sensor line is built to deliver consistent fitment and reliable operation for covered applications.