Hi there,If your engine is the VQ35, then your water pump is located inside the engine cover.Replacing the water pump is not a straight forward job, as it requires the removal of many external components (i.e. air ducts, grills, covers, belts, reservoirs etc) and internal components such as idler pulley, cranshaft pulley, tensioner etc. The coolant will need to be drained also.CAUTION: do not spill coolant on the drive belts.As per diagram, with engine cover removed the water pump (item # 1) can be found after removing the water pump cover (item # 5).
Unless you have access to the Factory Service Manual, I strongly advise you entrust this job to an Nissan agent who has experience in replacing a water pump on this model.Note: allowing a non-experienced mechanic to perform this work, could result in unnecessary labor time and more cost to you, so you should take this into consideration when weighing up the costs.Hope this answers your question."Please rate this solution"