24/7 Customer service
USD
To make aftermarket auto parts an afterthought.
Add your vehicle
Address
Login
Cart
Item
$0.00
Add your vehicle to ensure fitment/Choose a yearRequired Fields
Select a different vehicle
Make/Model
VIN
Save

2019 Subaru Legacy Knock Sensor

6 items

Get a reliable Knock Sensor for your vehicle at A-Premium. Our high-quality sensors are designed to accurately detect engine knocking, helping to prevent costly damage. Browse our selection today and enjoy fast, free shipping on your order.

  • All filters
  • Sort By
  • Price
  • Brand
  • Material
  • Warranty
Knock Detonation Sensor for Subaru Outback 2007-2009 Forester Impreza LegacyKnock Detonation Sensor for Subaru Outback 2007-2009 Forester Impreza Legacy
A-Premium®Part # APKNS030
Knock Detonation Sensor for Subaru Outback 2007-2009 Forester Impreza Legacy
4.811 Reviews
$23.99
Low stock: Only 5 left
Enter ZIP codeFree standard shipping
1-year warranty
90 days free return
Fits 2015 - 2021 Subaru WRX STI, 2013 - 2014 Subaru Impreza, 2013 - 2014 Subaru WRX, 2011 - 2013 Subaru Forester, 2007 - 2012 Subaru Impreza, 2007 - 2009 Subaru Legacy, 2007 - 2009 Subaru Outback, 2006 - 2010 Subaru Forester, 2006 - 2006 Saab 9-2X, 2006 - 2006 Subaru Impreza, 2006 - 2006 Subaru Impreza, 2006 - 2006 Subaru Impreza, 2006 - 2006 Subaru Impreza, 2006 - 2006 Subaru Legacy
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
KS303, 5S11719, ID0012, 22060AA140, 72991, 32010630, KNK242, 1581664, 
...View more
ConditionNew
item #100194S3
Show less
Standard KS303 Ignition Knock (Detonation) Sensor
StandardPart # KS303
Standard KS303 Ignition Knock (Detonation) Sensor
4.448 Reviews
$75.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2021 Subaru WRX STI, 2012-2014 Subaru Impreza, 2012-2014 Subaru WRX, 2012-2013 Subaru Forester, 2011-2013 Subaru Forester, 2011-2013 Subaru Forester, 2011-2012 Subaru Forester, 2008-2009 Subaru Legacy, 2007-2011 Subaru Impreza, 2007-2009 Subaru Outback, 2007-2007 Subaru Legacy, 2006-2010 Subaru Forester, 2006-2006 Saab 9-2X, 2006-2006 Subaru Impreza, 2006-2006 Subaru Impreza, 2006-2006 Subaru Impreza, 2006-2006 Subaru Impreza, 2006-2006 Subaru Legacy, 2006-2006 Subaru Legacy
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
MaterialMetal/Plastic
Part interchange
KS303, 158-1664, DKS743, 72991, ID0012, S8903, SU13172, V63-72-0029, 
...View more
item #100165K3
Show less
Beck/Arnley 158-1085 Ignition Knock (Detonation) Sensor
Beck/ArnleyPart # 158-1085
Beck/Arnley 158-1085 Ignition Knock (Detonation) Sensor
4.542 Reviews
$73.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2017-2017 Mazda CX-5, 2016-2020 Mazda CX-3, 2016-2018 Mazda MX-5 Miata, 2014-2018 Mazda 3, 2014-2017 Mazda 6, 2013-2016 Mazda CX-5, 2012-2013 Mazda 3, 2012-2013 Mazda 3, 2010-2011 Subaru Legacy, 2010-2011 Subaru Outback, 2008-2011 Subaru Tribeca, 2008-2009 Subaru Legacy, 2006-2010 INFINITI M45, 2006-2008 INFINITI M35, 2006-2007 Subaru B9 Tribeca, 2006-2006 INFINITI Q45, 2005-2007 INFINITI G35, 2005-2005 INFINITI Q45, 2004-2004 INFINITI Q45, 2003-2008 INFINITI FX35
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
158-1085
item #1000XPL3
Show less
Standard KS413 Ignition Knock (Detonation) Sensor
StandardPart # KS413
Standard KS413 Ignition Knock (Detonation) Sensor
4.448 Reviews
$69.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2022-2023 Subaru BRZ, 2020-2023 Subaru Legacy, 2020-2023 Subaru Outback, 2019-2022 Subaru Ascent, 2019-2022 Subaru Forester, 2019-2020 INFINITI Q50, 2019-2020 INFINITI Q60, 2018-2022 Subaru WRX, 2018-2018 INFINITI Q50, 2017-2023 Subaru Impreza, 2017-2020 Toyota 86, 2017-2019 Subaru Legacy, 2017-2019 Subaru Outback, 2017-2018 INFINITI Q60, 2017-2017 Subaru Outback, 2017-2017 Subaru Outback, 2016-2023 Subaru Crosstrek, 2015-2019 INFINITI Q70L, 2015-2016 Subaru Impreza, 2015-2015 INFINITI Q40
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
MaterialMetal/Plastic
Part interchange
KS413, 158-1718, 158-1722, DKS853, 73048, ID0071, ID0079, EKS913, 
...View more
item #100168R5
Show less
Beck/Arnley 158-1664 Ignition Knock (Detonation) Sensor
Beck/ArnleyPart # 158-1664
Beck/Arnley 158-1664 Ignition Knock (Detonation) Sensor
4.542 Reviews
$86.99
Enter ZIP codeFree standard shipping
3-year warranty
90 days free return
Fits 2015-2020 Subaru WRX STI, 2013-2013 Subaru Forester, 2013-2013 Subaru Forester, 2013-2013 Subaru Forester, 2013-2013 Subaru Forester, 2013-2013 Subaru Forester, 2012-2012 Subaru Forester, 2011-2012 Subaru Forester, 2011-2012 Subaru Forester, 2011-2012 Subaru Forester, 2011-2012 Subaru Forester, 2011-2012 Subaru Forester, 2011-2011 Subaru Forester, 2008-2011 Subaru Impreza, 2008-2009 Subaru Legacy, 2007-2007 Subaru Impreza, 2007-2007 Subaru Legacy, 2006-2010 Subaru Forester, 2006-2009 Subaru Outback, 2006-2009 Subaru Outback
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
Part interchange
158-1664
item #1000XPH2
Show less
Knock Detonation Sensor for Nissan Quest Rogue Subaru Legacy Outback INFINITI
A-Premium®Part # APKNS051
Knock Detonation Sensor for Nissan Quest Rogue Subaru Legacy Outback INFINITI
4.811 Reviews
$24.99
Enter ZIP codeFree standard shipping
1-year warranty
90 days free return
Fits 2022 - 2023 Subaru BRZ, 2022 - 2022 Subaru WRX, 2021 - 2023 Subaru Crosstrek, 2020 - 2023 Subaru Legacy, 2020 - 2023 Subaru Outback, 2019 - 2022 Subaru Ascent, 2019 - 2022 Subaru Forester, 2019 - 2020 INFINITI Q50, 2018 - 2021 Subaru WRX, 2018 - 2018 INFINITI Q50, 2017 - 2020 INFINITI Q60, 2017 - 2020 Toyota 86, 2016 - 2023 Subaru Crosstrek, 2015 - 2019 INFINITI Q70L, 2015 - 2019 INFINITI Q70L, 2015 - 2015 INFINITI Q40, 2015 - 2015 INFINITI Q50, 2015 - 2015 Subaru Forester, 2015 - 2015 Subaru WRX, 2014 - 2019 INFINITI Q70
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: 2019 Subaru Legacy
Item LocatedUnited States
Quantity1
MaterialMetal/Plastic
ConditionNew
item #10019HHQ
Show less

Related Categories

Crankshaft Position Sensor
Crankshaft Position Sensor
Oxygen Sensor
Oxygen Sensor
Pressure Sensor
Pressure Sensor
Air Flow Sensor
Air Flow Sensor
Ignition Coils & Spark Plugs Kits
Ignition Coils & Spark Plugs Kits
Spark Plug
Spark Plug

Related Blogs

P0327 Code: Knock Sensor Low Input Causes & Fix

Learn what triggers the P0327 knock sensor low-input code, how serious it is, and how to diagnose the sensor, connector and wiring step by step before replacing parts.

Jul 27, 2026