Standard Ignition KS404 Ignition Knock (Detonation) Sensor

Ignition Knock Sensor for OE Replacement

Standard Ignition KS404 is an OE replacement ignition knock sensor for vehicles that need accurate detonation feedback to the engine control system. It is built for direct service use on applications such as the 2011-2012 Chrysler 200, 2011-2012 Dodge Charger, and 2011-2012 Jeep Grand Cherokee.

Key Features

• Responds to knock frequencies up to 1000 Hz for broad engine operating conditions
• Automated data acquisition monitoring is used during manufacturing to verify voltage output at the specified frequency range
• Bolt-on mounting with a rectangular plug-in connector
• Female connector housing with 1 connector, 2 male blade terminals
• Plastic construction for OE-style service replacement
• Standard Ignition KS404 is an OE replacement part

Detailed Description

The KS404 knock sensor is designed to detect engine knock and send the signal needed for ignition timing correction. Standard Ignition engineers this sensor to cover a wide frequency range, which helps it respond to changing knock characteristics across different vehicle conditions. This makes it a practical replacement for Chrysler, Dodge, Jeep, Ram, and Volkswagen applications that call for a direct-fit detonation sensor. This part cross-references 5149188AA and 5S12501 for the same application.

What It Helps Address

• Knock sensor fault codes related to detonation detection
• Audible pinging or spark knock under load
• Rough engine operation caused by incorrect ignition timing feedback
• Check engine light concerns tied to knock sensor performance
• Driveability issues on Chrysler 200, Dodge Charger, and Jeep Grand Cherokee applications

Installation Notes and Tips

Verify connector shape, terminal style, and mounting location before installation. The KS404 uses a bolt-on mounting design with a rectangular plug-in connector, so the replacement should match the original sensor interface on the vehicle. Confirm the application by year, make, and model before service, especially on 2011-2012 Chrysler, Dodge, Jeep, Ram, and Volkswagen vehicles.

Quality Assurance

Standard Ignition maintains quality control throughout the manufacturing process, from component selection to finished sensor testing. Continuous output monitoring is used to confirm the sensor responds with the proper voltage at the specified frequency range.