Knock sensor 55599019

Description

Knock sensor by GM, catalog number 55599019. Confirmed catalog fitment: Opel ASTRA K (2015–2022). For an accurate match, compare the number and identification with the removed part and confirm the vehicle specification by VIN. The fitment list is a reference and does not replace a vehicle-specific compatibility check.

KNOCK SENSOR. The knock sensor is an engine management component designed to detect abnormal combustion vibrations (knocking) within the engine block. It monitors specific frequency vibrations caused by detonation and sends signals to the engine control unit (ECU), which adjusts ignition timing to protect the engine from damage. The sensor typically consists of a piezoelectric element housed in a metal body with an electrical connector. It is mounted directly to the engine block and operates under high temperature and vibration conditions. Proper function ensures optimal engine power, fuel efficiency and protection against harmful detonation. Failure may result in reduced engine performance, increased fuel consumption, unstable operation, ignition-related fault codes or limp mode activation. Common issues include internal sensor failure, poor electrical connection, housing corrosion or wiring damage. Our catalog includes genuine OEM knock sensors, quality aftermarket replacements and tested used units without cracks or connector damage. Used parts are inspected for housing integrity, connector condition and signal functionality. Selection is based on VIN number, engine type and part number. Timely replacement ensures reliable engine protection, stable performance and extended engine life.

Compatibility

Fits 1 vehicles

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About the manufacturer · GM

GM (General Motors) is one of the largest automotive corporations in the world, founded in 1908 in the United States by entrepreneur William C. Durant. The company объединяет several well‑known automotive brands includin...

GM (General Motors) is one of the largest automotive corporations in the world, founded in 1908 in the United States by entrepreneur William C. Durant. The company объединяет several well‑known automotive brands including Chevrolet, GMC, Cadillac and Buick and is a major manufacturer of vehicles, powertrains and genuine automotive components. Under the GM brand a wide range of original spare parts and components is produced for vehicles of the group, including engine parts, cooling system components, transmission elements, suspension parts, braking systems, electronic modules, sensors, fuel system components and body parts. Genuine GM parts are developed according to factory technical specifications and undergo strict quality control at every stage of production. This ensures precise compatibility with GM vehicles, reliable operation of vehicle systems and preservation of factory performance characteristics. According to feedback from vehicle owners and automotive service professionals, GM genuine components are known for consistent manufacturing quality, solid reliability and long service life. Many users report precise fitment without the need for modifications and stable vehicle performance after replacing components. The most commonly mentioned drawback is the relatively higher price compared with some aftermarket alternatives, although many vehicle owners consider genuine GM parts a justified choice due to their reliability, durability and compliance with manufacturer standards.

Additional information

Knock sensor by GM, catalog number 55599019, is listed for vehicle repair or maintenance. The catalog identifies the item as “Knock sensor”. Confirmed catalog fitment: Opel ASTRA K (2015–2022). Fitment is based on the catalog links between the part and vehicle bodies. It helps narrow the search, but final compatibility must be confirmed for the exact vehicle specification. The primary ordering references are part number 55599019 and manufacturer GM. Parts can differ within the same vehicle model by production year, engine, transmission, installation side, or position. Before purchase, compare the number and identification with the removed component and verify body, year, and specification by VIN. Also compare appearance, connectors, mountings, dimensions, and included items whenever those details are relevant to this part. Before purchase, compare identification and appearance with the old part and verify compatibility by VIN.

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