NTK ID0251 Ignition Knock (Detonation) Sensor

NTK Knock Sensor for OE-Style Engine Control

The NTK Ignition Knock (Detonation) Sensor ID0251 is built for precise engine knock detection in import and domestic applications. It supports accurate ignition timing control for vehicles such as Mazda CX-5, Mazda 3, Subaru Outback, and Nissan Murano.

Key Features

• NTK Ignition Knock (Detonation) Sensor, part number ID0251
• 1.90 in. length with a rectangular female connector
• 2-terminal design with blade terminals
• Built to meet or exceed OE specifications
• Tested under thermal shock, vibration, and OBD verification conditions
• NTK technical sensor coverage for import and domestic vehicles

Product Line Overview

NTK’s technical sensor line expands on the brand’s OE-focused ignition and oxygen sensor heritage. As part of NTK, The Sensor Specialist, this knock sensor is backed by more than 80 years of automotive experience and OE application knowledge. The ID0251 is engineered for vehicles that rely on accurate detonation sensing to maintain proper engine performance and control strategy.

Vehicle Fitment

• Fits 2016-2021 Mazda CX-3, N/A
• Fits 2014-2019 Mazda 3 Sport, N/A
• Fits 2014-2019 Mazda 6, N/A
• Fits 2013-2019 Mazda CX-5, N/A
• Fits 2014-2018 Mazda 3, N/A
• Fits 2012 Mazda 3, N/A
• Fits 2016-2018 Mazda MX-5 Miata, N/A
• Fits 2015-2017 Mazda 2, N/A
• Fits 2015-2017 Mazda MX-5, N/A
• Fits 2017 Subaru Outback, N/A
• Fits 2006-2015 Subaru Outback, N/A
• Fits 2008-2012 Subaru Tribeca, N/A
• Fits 2008-2011 Subaru Legacy, N/A
• Fits 2006-2010 INFINITI M45, N/A
• Fits 2003-2008 Nissan 350Z, N/A
• Fits 2003-2008 Nissan Murano, N/A
• Fits 2003-2007 INFINITI FX35, N/A
• Fits 2003-2007 INFINITI FX45, N/A
• Fits 2006-2007 INFINITI M35, N/A
• Fits 2006-2007 Subaru B9 Tribeca, N/A
• Fits 2006 INFINITI G35, N/A
• Fits 2005-2006 INFINITI Q45, N/A
• Fits 2003-2005 INFINITI G35, N/A
• Fits 2003-2004 Nissan Pathfinder, N/A

What It Helps Address

• Engine knock or detonation-related fault codes
• Retarded ignition timing caused by inaccurate knock sensing
• Reduced engine response under load
• Check engine light concerns tied to knock sensor circuit faults
• Driveability issues on Mazda, Subaru, Nissan, and INFINITI applications

Installation Notes

Verify connector shape, terminal count, and mounting location before installation. The ID0251 uses a rectangular female connector with two male blade terminals and does not include mounting hardware. Confirm the vehicle application against the fitment list for Mazda CX-5, Mazda 3, Subaru Outback, Nissan Murano, and related models before replacement.

Quality Assurance

NTK manufactures this sensor to OE-level standards using testing that includes thermal shock, vibration, and OBD verification. This part cross-references Delphi AS10228 and Standard Ignition KS204 for the same application.