PLEX Bosch Knock Sensor KS4-P

Original Bosch Knock Sensor KS4-P (1 unit)

The KS4-P sensor is designed to detect structure-borne vibrations in spark ignition engines caused by uncontrolled combustion. Engineered for durability, it performs reliably even in extreme operating conditions.

Key Features

• Genuine Bosch KS4-P — the industry-standard knock sensor used by OEMs worldwide.
• Broadband detection — picks up structure-borne vibration across the full knock frequency range.
• Extreme-duty construction — reliable under sustained heat, vibration and harsh underhood conditions.
• PLEX compatible — works directly with the PLEX Knock Monitor V3 systems.

Installation and Configuration available at Race Protocol

Authorized dealer with in-house installation, wiring and calibration. Call (724) 732-8948 to discuss your build.