As soon as you think that your Infiniti knock sensor is acting strange and not working properly, have it looked at immediately.  Ignoring a problematic knock sensor could, at the very least, be robbing your engine of its fuel efficiency.  At the most, a broken knock sensor can cost you thousands of dollars in engine repairs.  The knock sensor operates by burning fuel quickly, before it can detonate in the cylinder.  Its function is to generate power efficiently, with an optimum balance of timing, and fuel/air mixture.  With gasoline prices reaching an all time high, it's important to have a high quality knock sensor in your vehicle.  You can count on our online catalog to offer the best price possible on a brand new knock sensor.  We've set up our search engine so that you can locate the knock sensor that fits your specific Infiniti model instantly.  We can guarantee that your part will be in stock no matter what time of day or day of the week you order.