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About product and suppliers:
        Alibaba.com offers 6,280 knock sensor products. About 85% of these are auto sensors, 1% are sensors. 

A wide variety of knock sensor options are available to you, such as free samples, paid samples. 

There are 6,293 knock sensor suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Taiwan, and Hong Kong, which supply 99%, 1%, and 1% of knock sensor respectively. 

Knock sensor products are most popular in North America, South America, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 727 with ISO9001, 438 with ISO/TS16949, and 203 with Other certification.
        
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