NTK ID0300 Ignition Knock (Detonation) Sensor

The NTK ID0300 is a direct-fit replacement ignition knock (detonation) sensor engineered to OE fit, form, and function. Knock sensors are a critical engine management component — they detect the vibrations caused by engine knock or detonation and signal the engine control module (ECM) to retard ignition timing, protecting the engine from severe and costly internal damage. This sensor uses a piezoelectric crystal that generates a variable voltage output based on engine vibration intensity, delivering precise, real-time feedback to the ECM.

NTK is the only OE supplier offering a full line of technical sensors in the aftermarket for both import and domestic vehicles. Built on over 80 years of NGK automotive expertise, every NTK sensor is manufactured in ISO 14001, TS 16949, and TS 17025-certified facilities and undergoes rigorous testing — including thermal shock, vibration analysis, and OBD verification — to ensure reliable, long-term performance.

Key Features:

• Piezoelectric sensing element delivers accurate knock detection and precise ECM signaling
• Reinforced, extra-strength components resist corrosion and moisture penetration
• Shielded wiring harness minimizes electrical interference for consistent signal quality
• OE-matched mounting threads, harness length, and wire gauge for straightforward installation
• Manufactured to meet or exceed original equipment specifications
• Sold individually; no knock sensor module or wiring harness included

Common reasons for knock sensor replacement include an illuminated check engine light, engine hesitation, poor fuel economy, or a failed emissions test. Cross-reference part numbers include: 12623730, 242-1049, DKS651, and S8811. Also cataloged under NGK internal part number 72986.