Brand new OEM Nissan S13 SR20DET water pump assembly for RWD SR motors. Most SR20DET motors has been sitting in the junk yards of Japan for a few years. Old water pumps tends to "seize" if not used often (usually the case with SR20DET motors sitting in the junk yard). It is recommended to replace when rebuilding or swapping in your motor to prolong engine life and ensures proper water flow and cooling for your motor.
