The Walker Products Ignition Knock (Detonation) Sensor (part number 242-91027) is a direct-fit replacement for 1995-2020 BMW, Kia, Mini, and Porsche vehicles with 2.0L, 3.0L, and 1.5L 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:
- OE Replacement Sensitivity:Â Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
- Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
- Built for Harsh Environments:Â Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
- Restores Ignition Timing Accuracy:Â Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
- Detects Engine Knock:Â Monitors vibration frequencies to detect detonation and prevent pre-ignition engine damage.
Specifications:
| Number of Terminals | 2 |
| Connector Type | Blade |
| Connector Shape | Rectangle |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 1995-2020 BMW, Kia, Mini, Porsche, and Saab models including 230i, 230i xDrive, 330e, 330i, 330i GT xDrive, 330i xDrive, 340i, 340i GT xDrive and more — 2.0L, 3.0L, and 1.5L 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.
Interchanges With: Cont Machines 0K01C18921, NTK ID0161, NTK ID0187, ERA 550199, ERA 550460, Opel 1238345, Opel 6238341, Peugeot 594603 and 65 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.
