







🔥 Tune in to peak performance — don’t let your Mazda miss a beat! ⚙️
The Qiilu Professional Knock Sensor (ZJ01-18-921) is a high-precision, heat-resistant replacement sensor designed specifically for Mazda 3 BK models from 2003 to 2009. Made from durable SUS310 material and tested at extreme temperatures, it ensures reliable engine knock detection to optimize performance and responsiveness. Easy to install with a direct OEM fit, this compact sensor comes with dedicated customer support and a satisfaction guarantee.
| Brand | Qiilu |
| Item dimensions L x W x H | 30 x 30 x 30 Millimeters |
| Material | Polystyrene |
| Style | Durable |
| Maximum Supply Voltage | 5 Volts (DC) |
| Measuring Range | 100 - 140 dB |
| Mounting Type | Car Mount,Plug Mount |
| Output Type | electrical signal |
| Specific Uses For Product | automotive, electronic ignition systems |
| Upper Temperature Rating | 392 Degrees Fahrenheit |
| Manufacturer | Qiilu |
| Product Dimensions | 3 x 3 x 3 cm; 90 g |
| Item model number | ZJ01-18-921 |
| Manufacturer Part Number | AC130007 |
| Country of Origin | USA |
| Item Weight | 90 g |
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