The Walker Products Ignition Knock (Detonation) Sensor (part number 242-1136) is a direct-fit replacement for 2004-2006 Audi and Volkswagen vehicles with 4.2L engines. Walker Products Knock Sensors are OE Replacement components that detect engine detonation to help the ECU adjust timing and prevent internal engine damage.
Features:
- Detects Engine Knock:Â Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
- Restores Ignition Timing Accuracy:Â Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
- Built for Harsh Environments:Â Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
- Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
- OE Replacement Sensitivity:Â Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
Specifications:
| Number of Terminals | 3 |
| Connector Type | Blade |
| Connector Shape | Oblong |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 2004-2006 Audi and Volkswagen models including A8 Quattro and Phaeton — 4.2L engines.
Confirm the year, make, model, and engine against your vehicle before ordering. Full application data is shown in the fitment lookup on this page.
Fitment Notes: Color-Black
Interchanges With: Audi 077905377D, Audi 077905377F, VEMO V10-72-1165, NTK ID0254, Werner Metzger GmbH 0907048, Facet 9.3047, FAE 60128, Standard Import 19566 and 7 more
WARNING: This product can expose you to chemicals, including lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm.
