WARNING: This page is about a different car, the 2013 Nissan Xterra. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Exploded View Of Engine Unit With Torque Specifications
Courtesy of NISSAN NORTH AMERICA, INC.
Fig 2: Cylinder Block, Heater, Gasket And Connector Protector Cap With Torque Specification