To ensure reliability, purchase Infiniti part # B3731-6N21A Crankshaft Position Sensor. You have nothing to worry about if you choose OEM parts as they are the optimal you can get in terms of quality and longevity. This is because they are precisely-engineered with the meticulous specifications of the official factory. They have passed strict quality control tests during manufacturing, so you know they're durable and sure to fit.
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