Ignition Knock (Detonation) Sensor

Description

Walker Products Ignition Knock (Detonation) Sensors are OE Replacement components that monitor engine vibrations to detect knocking or detonation events. These sensors are a critical part of the engine control system, allowing the ECU to adjust ignition timing in real time to prevent spark knock—a condition that can cause internal engine damage, reduced fuel economy, and drivability issues. Walker Knock Sensors are engineered to match OE specifications for frequency range, sensitivity, and electrical output. Each unit is tuned to detect the specific resonant frequency of knock in a given engine platform, enabling precise spark retard when knock is detected. Built from high-quality, heat- and oil-resistant materials, these sensors are designed to endure the harsh conditions of the engine block and cylinder head. With exact OE fitment, Walker Knock Sensors install directly into the original threaded locations and connect using factory-style electrical terminals. Whether addressing a fault code (e.g., P0325, P0330), correcting timing issues, or replacing a failed sensor, Walker Knock Sensors restore proper knock detection, improve engine safety, and support optimal ignition performance across a wide range of gasoline applications.

Fitment

This part fits the following vehicles.

Features & benefits

• Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
• Restores Ignition Timing Accuracy: Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
• OE Replacement Sensitivity: Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
• Detects Engine Knock: Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
• Built for Harsh Environments: Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
• Direct replacement - this ignition knock sensor is made to match the fit, function and performance of the original equipment on specified vehicles
• Ideal solution - engineered to detect vibrations from knock and other combustion problems and replace a knock sensor that has failed
• Durable construction - designed and manufactured to strict specifications for reliable performance
• Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience

Specifications

Warranty

1 Year

Magnuson-Moss Warranty Act

Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)).