General Information

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

Each of the camshafts (1) are marked for bank 1 or bank 2 and the intake or exhaust side.

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CAUTION: Camshafts must be installed in their specified location.
The camshaft caps (1) are marked by position and have an arrow pointing toward the front of the engine.

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The camshaft caps must be installed in their specified location.
The inner diameter of the camshaft cap is manufactured together with the cylinder head. If a camshaft cap is damaged, the cylinder head must be replaced.
Camshaft gears (A) are not serviceable.

Courtesy of NISSAN NORTH AMERICA, INC.
If the camshaft or camshaft gear is damaged, the camshaft and gear assembly must be replaced.
The gears have timing marks (B) on them. When the timing marks are lined up and in contact, as shown, the engine is at Top Dead Center (TDC) for the number 1 piston.