Knock Sensor - GM (12737721)
Details
- Brand:
- SKU:
12737721
- Other Names:
Ignition Knock (Detonation) Sensor, F (S)Sensor
- Description: ACDelco Ignition Knock (Detonation) Sensor (Part Number: 55494828) is a sensor that detects engine knock or detonation and sends signals to the engine control module to allow timing adjustments.
- Function: Senses engine detonation and reports to the ECM so ignition timing can be adjusted to protect the engine.
- Application: Intended for use with engine management systems requiring knock feedback.
- Also known as: Knock Sensor
World Parts Direct is a U.S. based vendor — get competitive pricing, a compatibility guarantee, and ACDelco/ OEM‑aligned technical help from our team.
- Replaces:
55494828
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