How to replace the Knock Sensor on Toyota 4Runner?

The first step for Knock Sensor replacement involves removing the cylinder head sub-assembly together with disconnecting the heater water inlet hose A. The next step involves taking off water outlet pipe N0.1 by first disconnecting wire harness clamps before using a tool to remove its bolt and 2 nuts. First disconnect the knock sensor connectors while unscrewing two bolts that will let you remove the two knock sensors. Install the 2 knock sensors by refitting them with their 2 bolts which should be torqued to 20 N.m (204 kgf.cm, 15 ft.lbf) before connecting the 2 knock sensor connectors. Secure N0.1 water outlet pipe by tightening bolts and 2 nuts to 9.0 N.m while securing the 4 wire harness clamps. The heater water inlet hose A needs to be reconnected before putting back the cylinder head sub-assembly.

How to install the knock sensors and related components on Toyota 4Runner?

Insert the two knock sensors by using 2 bolts at 20 Nm torque setting (204 kgf-cm, 15 ft-lbf). Connect the two knock sensor connectors as the next step. Follow the process by securing the water outlet pipe No.1 using three bolts labeled [A] while achieving 10 Nm of torque (102 kgf-cm, 7 ft-lbf). You should also attach the 4 wire harness clamps [B]. The heater water inlet hose gets attached after the preceding steps. The installation of the cylinder head sub-assembly should follow.

OEM Toyota 4Runner Knock Sensor

Engine Knock Sensor

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9 Knock Sensors found

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Toyota 4Runner Knock Sensor
Part Number: 89615-12090
$145.22 MSRP: $205.57
You Save: $60.35 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Knock Control; Ignition Knock (Detonation) Sensor
- Manufacturer Note: DENSO
- Replaces: 89615-12050, 89615-32010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1995-2002 Toyota 4Runner | Base, Limited, SR5 | 6 Cyl 3.0 L GAS, 6 Cyl 3.4 L GAS
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Toyota 4Runner Knock Sensor
Part Number: 89615-06010
$138.05 MSRP: $195.42
You Save: $57.37 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Sensor, Knock Control; Ignition Knock (Detonation) Sensor
- Replaces: 89615-BZ030, 89615-20090, 89615-BZ040
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2023 Toyota 4Runner | 40th Anniversary Edition, Limited, Nightshade, Sport, SR5, SR5 Premium, Trail, TRD Off-Road, TRD Off-Road Premium, TRD Pro, TRD Sport, Venture | 4 Cyl 2.7 L GAS, 6 Cyl 4.0 L GAS, 8 Cyl 4.7 L GAS
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Toyota 4Runner Knock Sensor
Part Number: 89615-52010
$152.39 MSRP: $215.72
You Save: $63.33 (30%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor, Knock Control; Ignition Knock (Detonation) Sensor
- Manufacturer Note: MATSUSHITA
- Replaces: 89615-12030, 89615-22050
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2003-2004 Toyota 4Runner | Limited, Sport, SR5 | 8 Cyl 4.7 L GAS
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Toyota 4Runner Sensor, Knock Control
Part Number: 89615-50010
$167.66 MSRP: $237.34
You Save: $69.68 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Ignition Knock (Detonation) Sensor; Knock Sensor
- Manufacturer Note: MATSUSHITA
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1992-2000 Toyota 4Runner | Base, SR5 | 4 Cyl 2.4 L GAS, 4 Cyl 2.7 L GAS, 6 Cyl 3.0 L GAS
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Toyota 4Runner Knock Sensor
Part Number: 89615-35040
$153.21 MSRP: $216.89
You Save: $63.68 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Replaces: 89615-35030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1991 Toyota 4Runner | SR5 | 4 Cyl 2.4 L GAS
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Toyota 4Runner Knock Sensor
Part Number: 89615-26010
$149.33 MSRP: $211.39
You Save: $62.06 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 2000 Toyota 4Runner | Base | 4 Cyl 2.7 L GAS
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Toyota 4Runner Sensor, Knock Control
Part Number: 89615-22040
$145.22 MSRP: $205.57
You Save: $60.35 (30%)
Ships in 1 Business Day
ADD TO CART
Product Specifications
- Other Name: Ignition Knock (Detonation) Sensor; Knock Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1992-1993 Toyota 4Runner | SR5 | 4 Cyl 2.4 L GAS
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Toyota 4Runner Knock Sensor
Part Number: 89615-20010
$155.44 MSRP: $220.04
You Save: $64.60 (30%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control
- Replaces: 89615-20020
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1991 Toyota 4Runner | SR5 | 6 Cyl 3.0 L GAS
View related parts
Toyota 4Runner Knock Sensor
Part Number: 89615-12040
$184.76 MSRP: $263.80
You Save: $79.04 (30%)
ADD TO CART
Product Specifications
- Other Name: Sensor, Knock Control; Ignition Knock (Detonation) Sensor
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following Vehicles:
- 1995-2002 Toyota 4Runner | Base, Limited, SR5 | 6 Cyl 3.0 L GAS, 6 Cyl 3.4 L GAS

Toyota 4Runner Knock Sensor

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Toyota 4Runner Knock Sensor Parts and Q&A

Knock Sensor
89615-52010
Q: How to replace the Knock Sensor on Toyota 4Runner?
A:
The first step for Knock Sensor replacement involves removing the cylinder head sub-assembly together with disconnecting the heater water inlet hose A. The next step involves taking off water outlet pipe N0.1 by first disconnecting wire harness clamps before using a tool to remove its bolt and 2 nuts. First disconnect the knock sensor connectors while unscrewing two bolts that will let you remove the two knock sensors. Install the 2 knock sensors by refitting them with their 2 bolts which should be torqued to 20 N.m (204 kgf.cm, 15 ft.lbf) before connecting the 2 knock sensor connectors. Secure N0.1 water outlet pipe by tightening bolts and 2 nuts to 9.0 N.m while securing the 4 wire harness clamps. The heater water inlet hose A needs to be reconnected before putting back the cylinder head sub-assembly.
Knock Sensor
89615-06010
Q: How to install the knock sensors and related components on Toyota 4Runner?
A:
Insert the two knock sensors by using 2 bolts at 20 Nm torque setting (204 kgf-cm, 15 ft-lbf). Connect the two knock sensor connectors as the next step. Follow the process by securing the water outlet pipe No.1 using three bolts labeled [A] while achieving 10 Nm of torque (102 kgf-cm, 7 ft-lbf). You should also attach the 4 wire harness clamps [B]. The heater water inlet hose gets attached after the preceding steps. The installation of the cylinder head sub-assembly should follow.