HomeEmission Control > SensorsGlobal Parts 1811931 Ignition Knock (Detonation) Sensor
Part #: 1811931

Global Parts 1811931 Ignition Knock (Detonation) Sensor

3 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford and Mercury, Fusion and Milan
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Overview of Global Parts Ignition Knock Sensor 1811931

The Global Parts Ignition Knock (Detonation) Sensor 1811931 is designed for precise detection of engine knock in Ford Fusion and Mercury Milan models. This sensor helps maintain optimal engine performance by monitoring detonation and sending accurate signals to the engine control unit.

  • Compatible with Ford Fusion and Mercury Milan vehicles
  • Wiring harness length of 16.13 inches for flexible installation
  • Blade terminal type with 2 terminals for reliable electrical connection
  • Includes a single male square-shaped connector
  • Wiring harness included for ease of replacement
  • Mounting hardware not included

Detailed Product Description

The Global Parts 1811931 ignition knock sensor is engineered to detect engine detonation by sensing vibrations caused by knocking. It features a 16.13-inch wiring harness that provides sufficient length for installation in the engine bay of Ford Fusion and Mercury Milan vehicles. The sensor uses a blade terminal type with two terminals, ensuring a secure and stable electrical connection. The included wiring harness has a single male connector with a square shape, designed to fit the original equipment specifications. While mounting hardware is not included, the sensor is compatible with existing factory mounts, simplifying the replacement process.

Common Applications and Issues Addressed

  • Detects engine knock to prevent potential damage
  • Helps improve fuel efficiency by optimizing ignition timing
  • Reduces engine noise caused by detonation
  • Prevents engine misfires related to knock sensor failure
  • Supports emission control by maintaining proper combustion

Installation Notes and Tips

  • Ensure the vehicle is compatible: Ford Fusion or Mercury Milan models
  • Disconnect the battery before installation to avoid electrical shorts
  • Use the existing mounting hardware or purchase separately if needed
  • Verify the wiring harness connector matches the vehicle’s harness for proper fit
  • Handle the sensor carefully to avoid damage to the wiring or terminals

Quality Assurance and Warranty

Global Parts maintains strict quality control standards for part number 1811931 to ensure reliable performance and durability. The ignition knock sensor is tested to meet OEM specifications for fit and function. Warranty coverage details should be confirmed at the point of purchase, as they may vary by distributor or retailer.

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2012FordFusion3.0LV6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2011FordFusion3.0LV6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.
2011MercuryMilan3.0LV6N/AEnsure compatibility prior to purchasing this Ignition Knock Sensor.

* 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.