



🚗 Knock out engine issues with GM’s trusted sensor!
The GM Genuine Parts 213-3521 Ignition Knock Sensor is a GM-recommended, OE-spec replacement designed to detect engine knock via piezoelectric technology. Compact and heat-resistant up to 250°F, it ensures precise ignition timing adjustments for optimal engine performance and durability in GM vehicles.





| 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 | 2.88 ounces |
| 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 |
| 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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