The Walker Products Ignition Knock (Detonation) Sensor (part number 242-91017) is a direct-fit replacement for 1981-1996 Buick, Cadillac, Chevrolet, and Oldsmobile vehicles with 2.8L, 3.1L, and 4.6L 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.
- Exact OE Fit: Installs directly into original mounting locations using factory connectors and threads—no modifications required.
- Restores Ignition Timing Accuracy:Â Supports optimal fuel efficiency, performance, and emissions by correcting spark advance during knock conditions.
- OE Replacement Sensitivity:Â Calibrated to match factory frequency response and output for seamless ECU integration and spark control.
- Built for Harsh Environments:Â Engineered to resist heat, vibration, and oil exposure for long-lasting signal reliability.
Specifications:
| Number of Terminals | 1 |
| Connector Type | Bullet |
| Connector Shape | Circle |
| Connector Gender | Male |
| Terminal Gender | Female |
Fits: 1981-1996 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models including Century, Regal, Skylark, Allante, Cimarron, DeVille, Eldorado, Seville and more — 2.8L, 3.1L, and 4.6L 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: Volvo Penta 3854512, Volvo Penta 38545125, Duralast SU168DG, Carquest 71-6524, Hella 613-01, NTK ID0105, Delphi AS10007, General Motors 10456208 and 10 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.
