This replacement engine coolant thermostat housing is engineered to match the fit and durability of the stock thermostat housing on specified vehicles. It is designed to withstand extreme temperature changes to extend service life. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Infiniti M30: 1990, 1991, 1992] - [Infiniti QX4: 1997, 1998, 1999, 2000] - [Nissan 200SX: 1987, 1988] - [Nissan 300ZX: 1984, 1985, 1986, 1987, 1988, 1989] - [Nissan D21: 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994] - [Nissan Frontier: 1999, 2000, 2001, 2002, 2003, 2004] - [Nissan Pathfinder: 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000] - [Nissan Pickup: 1995] - [Nissan Xterra: 2000, 2001, 2002, 2003, 2004]