030905377A Knock Detonation Sensor for VW Jetta Golf Beetle

Product Overview

This aftermarket replacement knock sensor is intended for the listed Volkswagen Jetta, Golf, and Beetle applications and cross-references part number 030905377A. A knock sensor detects abnormal combustion vibrations in the engine and sends a signal to the engine management system so ignition timing can be adjusted. It is supplied for comparison with the referenced part number.

Key Features & Performance

• Detects engine knock vibrations and relays the signal to the engine control system
• Supports the engine management system in adjusting ignition timing to suit combustion conditions
• Cross-references part number 030905377A for comparison with the original unit
• Serves as the replacement component when the existing knock sensor is damaged or malfunctioning

Fitment & Compatibility

• for Volkswagen Jetta applications
• for Volkswagen Golf applications
• for Volkswagen Beetle applications

Common Uses

• Replacing a damaged or malfunctioning knock sensor
• Engine maintenance and diagnostics work on the ignition system
• Restoring knock detection after the original sensor has failed

Technical Specifications

• Product Type: Knock Detonation Sensor
• Part Number: 030905377A
• Vehicle Application(s): Volkswagen Jetta, Volkswagen Golf, Volkswagen Beetle

Frequently Asked Questions

Q: What does a knock sensor do? A: It detects abnormal combustion vibrations in the engine and sends a signal that the engine management system uses to adjust ignition timing.

Q: How do I verify fitment? A: Compare your existing part number with 030905377A and confirm your complete vehicle model and engine before ordering.

This is an aftermarket replacement part and is not represented as genuine or original equipment. Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number, model year, or existing part number. Verify fitment before purchase.