Hyundai Elantra: Installation - Crankshaft Position Sensor (CKPS). Repair 
procedures - Engine Control System - Fuel System - Hyundai Elantra MD 2010-2015 Service manualHyundai Elantra: Installation

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Install the component with the specified torques.
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Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing.
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Apply the engine oil to the O-ring.
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Insert the sensor in the installation hole and be careful not to damage.
1.
Installation is reverse of removal.

Crankshaft position sensor installation bolt:
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)