Brand new and never used, directly replaces the old one and easy installation.
Fitment: for Nissan 200SX 1995-1999, for Nissan 240SX 1995-1998, for Nissan Altima 1993-2001, for Nissan Frontier 1998-2004, for Nissan Hardbody Pickup (D21) 1994, for Nissan Hardbody Pickup (D21U) 1995-1997, for Nissan Sentra 1991-2002, for Nissan Stanza 1993-1997, for Nissan Xterra 2000-2004
OE Number: 2120053J00.
Good Replacement: The engine's thermostat regulates the temperature of the engine by controlling coolant flow. A bad or failing thermostat: high temperature reading and engine overheating, low temperature reading and underheated engine, temperature changing erratically, coolant leaks around thermostat housing or under the vehicle. How to find thermostat: You can find your car's thermostat by starting at the upper radiator hose and following it to where it enters the top of the engine.
Package Included: 1 x Thermostat Housing Assembly.