Knock sensor 030905377F

Description

Knock sensor by VAG, catalog number 030905377F. Confirmed catalog fitment: Volkswagen JETTA VII BU3, BU4 (2017+), Volkswagen JETTA VII BU3, BU4, BU5 (2018–2024), Volkswagen TAOS CL1, CP1, CQ1 (2020+). 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 3 vehicles

Nothing found

About the manufacturer · VAG

VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known autom...

VAG is a commonly used abbreviation referring to the Volkswagen Group, one of the largest automotive manufacturers and component producers in the world. The group was founded in Germany and includes many well‑known automotive brands such as Volkswagen, Audi, Škoda, SEAT, Porsche, Bentley, Lamborghini and several others. In the automotive spare parts market the term VAG usually refers to genuine components designed for vehicles produced within the Volkswagen Group. The product range includes engine components, fuel injection system parts, turbochargers, transmission elements, suspension components, braking systems, electronic modules, sensors, cooling system parts and body components. Genuine VAG parts are developed according to unified engineering standards used across the Volkswagen Group and undergo strict quality control and testing for durability, reliability and safety. This ensures precise compatibility with vehicles of the group and stable operation of all vehicle systems. According to feedback from vehicle owners and automotive repair specialists, VAG genuine parts are known for their high manufacturing quality, strong reliability and long service life. Users frequently highlight precise fitment without the need for modifications and full compliance with factory specifications. The most commonly mentioned drawback is the relatively higher cost compared with many aftermarket alternatives, although many drivers consider original VAG parts the best option for maintaining vehicle reliability and factory performance.

Additional information

Knock sensor by VAG, catalog number 030905377F, is listed for vehicle repair or maintenance. The catalog identifies the item as “Knock sensor”. Confirmed catalog fitment: Volkswagen JETTA VII BU3, BU4 (2017+), Volkswagen JETTA VII BU3, BU4, BU5 (2018–2024), Volkswagen TAOS CL1, CP1, CQ1 (2020+). 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 030905377F and manufacturer VAG. 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. Compare the offered part with the removed unit and confirm fitment by VIN when necessary.

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