Where is the knock sensor located and how do you remove and install it on Subaru Legacy?

The knock sensor is situated below the intake manifold, upon the top of the engine block, to one side of the centre line of casings and near its rear end. For removal of the knock sensor, first take off the engine cover and disconnect a wire from its negative terminal. As for turbocharged models, remove them also from intercooler connections. For knocking sensor electrical connector disconnection push release tab and separate these two halves. See how it is placed before taking off and make a marking on an engine block where this pigtail is found. Take out this knock sensor retaining bolt then pull out this knock sensor. To fit in a new knock sensor reverse back with previous steps ensuring that tightening torque amount is recommended by manufacturer for particular vehicle model.

Genuine Subaru Legacy Knock Sensor

Engine Knock Sensor

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14 Knock Sensors found

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Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA140
$90.56 MSRP: $131.25
You Save: $40.69 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2009 Subaru Legacy | 2.5i, 2.5i Base, 2.5i Limited, Base, GT, GT Limited, XT Limited | 2.5L H4, 2.5L H4 Turbo
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Subaru Legacy Knock Sensor
Part Number: 22060AA070
$94.53 MSRP: $137.00
You Save: $42.47 (31%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Knock
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1999-2001 Subaru Legacy | Base, Brighton, Cold Weather, GT, L, Limited, Post, SUS Limited | 2.2L H4 Series, 2.5L H4
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Subaru Legacy Knock Sensor
Part Number: 22060AA061
$89.99 MSRP: $130.42
You Save: $40.43 (31%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assembly-Knock
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1997-1999 Subaru Legacy | Brighton, GT, L, LS, LS-I, Out Back, Post, SUS | 2.2L H4 , 2.2L H4 (New EVAPO), 2.5L H4
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Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA180
$137.34 MSRP: $199.05
You Save: $61.71 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock
- Replaces: 22060AA160
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2019 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring, 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 2.5L H4, 2.5L H4 DOHC, 3.6L H6
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA160
$137.34 MSRP: $199.05
You Save: $61.71 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Replaced by: 22060AA180
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2012-2017 Subaru Legacy | 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring, 3.6R, 3.6R Limited, 3.6R Premium, 3.6R Touring | 2.5L H4, 2.5L H4 DOHC, 3.6L H6
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Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA100
$95.75 MSRP: $138.77
You Save: $43.02 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2002-2004 Subaru Legacy | Baja, Baja-S, Base, Brighton, Cold Weather, GT, L, Limited, L-S, SUS Limited | 2.5L H4
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Subaru Legacy PT118289 Knock Sensor
Part Number: 22060AA030
$88.80 MSRP: $128.70
You Save: $39.90 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock
- Replaced by: 22060AA031
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1990-1996 Subaru Legacy | Base, Brighton, GT, L, LS, LS-D, LS-I, Out Back, Post, Turbo | 2.2L H4 , 2.5L H4
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Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA18A
$86.25 MSRP: $125.00
You Save: $38.75 (31%)
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2017-2021 Subaru Legacy | 2.4R F/R-O, 2.4R Limited, 2.4R Touring, 2.5i, 2.5i Limited, 2.5i Premium, 2.5i Sport, 2.5i Touring | 2.4L H4 DIT, 2.5L H4, 2.5L H4 DI
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA111
$95.75 MSRP: $138.77
You Save: $43.02 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2004-2006 Subaru Legacy | 2.5i, 2.5i Limited, Baja-B, GT, GT Limited | 2.5L H4, 2.5L H4 Turbo
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA150
$83.66 MSRP: $121.25
You Save: $37.59 (31%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2010-2012 Subaru Legacy | 2.5GT Limited, 2.5GT Premium, 2.5i, 2.5i Limited, 2.5i Premium | 2.5L H4 SOHC, 2.5L H4 Turbo
View related parts
Subaru Legacy Knock Sensor
Part Number: 22060AA031
$88.80 MSRP: $128.70
You Save: $39.90 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock
- Replaces: 22060AA030
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 1990-1996 Subaru Legacy | Base, Brighton, GT, L, LS, LS-D, LS-I, Out Back, Post, Turbo | 2.2L H4, 2.2L H4 (New EVAPO), 2.5L H4
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA130
$95.75 MSRP: $138.77
You Save: $43.02 (31%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2006-2011 Subaru Legacy | 3.0R, 3.0R Limited, 3.0R LL-Bean, 3.6R, 3.6R Limited, 3.6R Premium | 3.0L H6, 3.6L H6
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060KA040
$87.46 MSRP: $126.75
You Save: $39.29 (31%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2005 Subaru Legacy | 3.0R, 3.0R Limited, 3.0R LL-Bean | 3.0L H6
View related parts
Subaru Legacy Knock Sensor Assembly
Part Number: 22060AA081
$95.75 MSRP: $138.77
You Save: $43.02 (31%)
Product Specifications
- Other Name: Sensor Assembly-Knock; Knock Sensor
- Warranty: This genuine part is guaranteed by Subaru's factory warranty.
Fits the following Vehicles:
- 2001-2004 Subaru Legacy | Flat6, Flat6 L.L.Bean, Flat6-S, SUS Flat6 | 3.0L H6

Subaru Legacy Knock Sensor

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Subaru Legacy Knock Sensor Parts Questions & Experts Answers

Knock Sensor Assembly
22060AA100
Q: Where is the knock sensor located and how do you remove and install it on Subaru Legacy?
A: The knock sensor is situated below the intake manifold, upon the top of the engine block, to one side of the centre line of casings and near its rear end. For removal of the knock sensor, first take off the engine cover and disconnect a wire from its negative terminal. As for turbocharged models, remove them also from intercooler connections. For knocking sensor electrical connector disconnection push release tab and separate these two halves. See how it is placed before taking off and make a marking on an engine block where this pigtail is found. Take out this knock sensor retaining bolt then pull out this knock sensor. To fit in a new knock sensor reverse back with previous steps ensuring that tightening torque amount is recommended by manufacturer for particular vehicle model.