HomeEmission Control > SensorsBeck Arnley 158-1664 Ignition Knock (Detonation) Sensor
Part #: 158-1664

Beck Arnley 158-1664 Ignition Knock (Detonation) Sensor

38 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Subaru and Saab, WRX STI, Forester, Impreza, Legacy, Outback, and 9-2X
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Reliable Ignition Knock Sensor for Saab and Subaru Vehicles

The Beck Arnley 158-1664 Ignition Knock (Detonation) Sensor is designed to monitor engine vibrations and detect knocking in select Saab and Subaru models. This sensor helps maintain optimal engine performance by providing accurate feedback to the engine control unit.

  • Compatible with Saab 9-2X and Subaru Forester, Impreza, Legacy, Outback, WRX STI
  • Part number 158-1664 ensures precise fit and function
  • Monitors engine detonation to prevent damage
  • Detects knocking caused by lead-related combustion issues
  • Durable construction for consistent sensor performance

Product Details and Chemical Considerations

This ignition knock sensor is engineered to detect engine knock, which can be influenced by the presence of lead in fuel or combustion byproducts. Lead can affect sensor readings and engine performance, making the sensor's accuracy critical for vehicles like the Saab 9-2X and Subaru WRX STI. The Beck Arnley 158-1664 sensor provides reliable detection to help the engine control unit adjust ignition timing and prevent damage caused by detonation.

Common Applications and Problem Resolution

  • Helps prevent engine knocking and pinging in Subaru Impreza and Legacy models
  • Assists in maintaining proper ignition timing for Saab 9-2X
  • Reduces risk of engine damage due to detonation in Subaru Outback and Forester
  • Improves fuel efficiency by ensuring accurate knock detection
  • Supports emission control by monitoring combustion irregularities

Installation Notes and Tips

When installing the Beck Arnley 158-1664 ignition knock sensor, ensure the engine is cool and disconnect the battery to avoid electrical issues. Proper torque specifications should be followed to avoid sensor damage. Verify sensor wiring connections are secure and free of corrosion to maintain signal integrity. This sensor is designed for direct replacement on compatible Saab and Subaru models, simplifying installation.

Quality Assurance and Warranty Information

Beck Arnley parts undergo rigorous testing to meet OEM standards for fit, form, and function. The 158-1664 ignition knock sensor is manufactured to provide consistent performance and durability. While specific warranty details may vary, Beck Arnley typically offers coverage against defects in materials and workmanship to ensure customer confidence in the product.

BrandBeck Arnley
Part Number158-1664
Are You Using The Long Form WarningY
Chemical(s) at IssueLEAD

This part fits 38 vehicles. Search below:

YearMakeModelSubmodelLitersCylindersPositionNotes
2021SubaruWRX STI2.5LH4N/A
2020SubaruWRX STI2.5LH4N/A
2019SubaruWRX STI2.5LH4N/A
2018SubaruWRX STI2.5LH4N/A
2017SubaruWRX STI2.5LH4N/A
2016SubaruWRX STI2.5LH4N/A
2015SubaruWRX STI2.5LH4N/A
2013SubaruForester2.5LH4N/AWith Harness
2012SubaruForester2.5LH4N/AWith Harness
2011SubaruForester2.5LH4N/AWith Harness
2011SubaruImpreza2.5LH4N/A
2010SubaruForester2.5LH4N/A
2010SubaruImpreza2.5LH4N/A
2009SubaruForester2.5LH4N/A
2009SubaruImpreza2.5LH4N/A
2009SubaruLegacy2.5LH4N/A
2009SubaruOutback2.5i2.5LH4N/A
2009SubaruOutback2.5i Limited2.5LH4N/A
2008SubaruForester2.5LH4N/A
2008SubaruImpreza2.5LH4N/A
2008SubaruLegacy2.5LH4N/A
2008SubaruOutback2.5i2.5LH4N/A
2008SubaruOutback2.5i Limited2.5LH4N/A
2007SubaruForester2.5LH4N/A
2007SubaruImpreza2.5LH4N/A
2007SubaruLegacy2.5LH4N/A
2007SubaruOutback2.5i2.5LH4N/A
2007SubaruOutback2.5i Limited2.5LH4N/A
2006Saab9-2X2.5LH4N/A
2006SubaruForester2.5LH4N/A
2006SubaruImpreza2.5i2.5LH4N/A
2006SubaruImprezaOutback Sport2.5LH4N/A
2006SubaruImprezaWRX2.5LH4N/A
2006SubaruImprezaWRX Limited2.5LH4N/A
2006SubaruImprezaWRX TR2.5LH4N/A
2006SubaruLegacy2.5i2.5LH4N/A
2006SubaruOutback2.5i2.5LH4N/A
2006SubaruOutback2.5i Limited2.5LH4N/A

* 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.