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Global Parts 1811742 Ignition Knock (Detonation) SensorOE Quality 60-Day Returns
Part #: 1811742

Global Parts 1811742 Ignition Knock (Detonation) Sensor

16 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru, Forester, Impreza, Legacy, and Outback
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Overview of Global Parts Ignition Knock Sensor 1811742

The Global Parts Ignition Knock (Detonation) Sensor 1811742 is designed for precise detection of engine knock in Subaru vehicles. Compatible with Subaru Forester, Impreza, Legacy, and Outback models, this sensor helps maintain optimal engine performance by monitoring detonation events.

  • Length: 3.75 inches for proper fitment
  • Blade terminal type ensuring secure electrical connection
  • Single female oblong connector for reliable wiring harness integration
  • Includes wiring harness for straightforward installation
  • Mounting hardware not included, allowing use of existing components

Detailed Product Description

This ignition knock sensor from Global Parts (part number 1811742) is engineered to detect engine detonation by sensing vibrations caused by knocking. The sensor’s 3.75-inch length and blade terminal type provide compatibility with the factory wiring harnesses of Subaru Forester, Impreza, Legacy, and Outback models. Featuring one female oblong connector and a single terminal, it ensures a secure and accurate signal transmission to the engine control unit (ECU). The included wiring harness simplifies the replacement process, although mounting hardware is not supplied and should be reused from the original sensor.

Common Applications and Issues Addressed

  • Detects engine knock to prevent potential damage
  • Helps improve fuel efficiency by optimizing ignition timing
  • Reduces engine noise caused by detonation
  • Prevents engine misfires related to knock sensor failure
  • Supports emission control by maintaining proper combustion

Installation Notes and Tips

  • Ensure the vehicle is compatible: Subaru Forester, Impreza, Legacy, or Outback
  • Use existing mounting hardware from the original sensor
  • Verify the wiring harness connection matches the female oblong connector
  • Handle the sensor carefully to avoid damage to the blade terminal
  • Consult the vehicle’s service manual for torque specifications and sensor location

Quality Assurance and Warranty

Global Parts provides this ignition knock sensor with quality standards that meet OEM specifications. While mounting hardware is not included, the sensor and wiring harness are manufactured to ensure reliable performance. Please refer to Global Parts’ warranty policy for coverage details related to part number 1811742.

This part fits 16 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002SubaruForester2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2002SubaruImpreza2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2001SubaruForester2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2001SubaruImpreza2.2LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2001SubaruImpreza2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2001SubaruLegacy2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2001SubaruOutback2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2000SubaruForester2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2000SubaruImpreza2.2LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2000SubaruImpreza2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2000SubaruLegacy2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2000SubaruOutback2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
1999SubaruForester2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
1999SubaruImpreza2.2LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
1999SubaruImpreza2.5LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
1999SubaruLegacy2.2LH4N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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