



🚗 Keep your GM engine purring with precision power!
The GM Genuine Parts 213-3521 Ignition Knock Sensor is a factory-recommended, piezoelectric sensor designed to detect engine knock and send real-time signals to the ECM. Engineered to GM OE specifications, it ensures optimal ignition timing, protects your engine from pre-ignition damage, and fits perfectly with durable, heat-resistant materials.





| Brand | GM GENUINE PARTS |
| Item dimensions L x W x H | 2.7 x 2.7 x 2.3 inches |
| Material | Piezoelectric Material |
| Item Weight | 0.18 Pounds |
| Style | Modern |
| Maximum Supply Voltage | 12 Volts (DC) |
| Mounting Type | Flange Mount |
| Output Type | Push Button |
| Specific Uses For Product | engine protection and performance optimization in GM vehicles |
| Upper Temperature Rating | 250 Degrees Fahrenheit |
| UPC | 707773013601 |
| Global Trade Identification Number | 00707773013601 |
| Manufacturer | ACDelco |
| Model | GM Original Equipment |
| Item Weight | 2.88 ounces |
| Product Dimensions | 2.7 x 2.7 x 2.3 inches |
| Item model number | 213-3521 |
| Is Discontinued By Manufacturer | No |
| Exterior | Chrome |
| Manufacturer Part Number | 213-3521 |
| OEM Part Number | 12589867 |
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