How to service the knock sensor (KS) on Mercury Mariner?

You must have the vehicle in NEUTRAL position while using a hoist during the knock sensor (KS) servicing operation. Before working start disconnect the battery ground cable and proceed to remove the intake manifold. First disconnect the knock sensor bolt before removing both the bolt and the sensor. Installation requires following the backward steps of removal while torquing the bolt to 20 Nm (15 lb-ft).

OEM Mercury Mariner Knock Sensor

Engine Knock Sensor

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4 Knock Sensors found

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Mercury Mariner Knock Sensor
Part Number: 1S7Z-12A699-BB
$44.85 MSRP: $70.00
You Save: $25.15 (36%)
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Product Specifications
- Other Name: Sensor - Engine Knock; Ignition Knock (Detonation) Sensor; Sensor
- Replaces: 1S7Z-12A699-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2011 Mercury Mariner | Base, Hybrid, Premier | 4 Cyl 2.3 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.3 L GAS, 4 Cyl 2.5 L FULL HYBRID EV-GAS (FHEV), 4 Cyl 2.5 L GAS
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Mercury Mariner Knock Sensor
Part Number: 4L3Z-12A699-AA
$55.59 MSRP: $88.27
You Save: $32.68 (38%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Sensor - Engine Knock; Ignition Knock (Detonation) Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | Base, Premier | 6 Cyl 3.0 L FLEX, 6 Cyl 3.0 L GAS
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Mercury Mariner Knock Sensor
Part Number: XS2Z-12A699-BA
Product Specifications
- Other Name: Sensor - Engine Knock; Ignition Knock (Detonation) Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Luxury, Premier | 6 Cyl 3.0 L GAS
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Mercury Mariner Knock Sensor
Part Number: YL8Z-12A699-AA
Product Specifications
- Other Name: Sensor - Engine Knock; Ignition Knock (Detonation) Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | Luxury, Premier | 6 Cyl 3.0 L GAS

Mercury Mariner Knock Sensor

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Mercury Mariner Knock Sensor Parts Questions & Experts Answers

Knock Sensor
1S7Z-12A699-BB
Q: How to service the knock sensor (KS) on Mercury Mariner?
A: You must have the vehicle in NEUTRAL position while using a hoist during the knock sensor (KS) servicing operation. Before working start disconnect the battery ground cable and proceed to remove the Intake Manifold. First disconnect the knock sensor bolt before removing both the bolt and the sensor. Installation requires following the backward steps of removal while torquing the bolt to 20 Nm (15 lb-ft).