This is a "BRAND NEW" Very High Quality VOTEX Nissan Knock Sensor. Don't settle for anything less then the Highest Quality Nissan parts for your car, VOTEX brand is the solution for you! One can often tell he needs a new knock sensor with a check engine light or notice symptoms like sluggish and poor engine poor acceleration/performance. Often you will also see a noticeable decrease in fuel economy. Seldom will knock sensors fail outright and but rather slowly fail over time and cause false signals to be sent to the ECU which thinks the engine is knocking when it's actually not. Any questions or concerns on any of our products feel free to contact us by telephone or email by clicking on AntennaMastsRus about us page here on Amazon. Fitment: Nissan: 1995-1998 Nissan 200SX 1.6L 4 Cyl 1991-1998 Nissan 240SX 2.4L 4 Cyl 1990-1996 Nissan 300ZX 3.0L V6 1993-2001 Nissan Altima 2.4L 4 Cyl 1990-1993 Nissan D21 Pickup 2.4L 4 Cyl & 3.0L V6 1998-2001 Nissan Frontier 2.4L 4 Cyl 1995-2002 Nissan Maxima 3.0L V6 1991-1999 Nissan Pathfinder 3.0L V6 1994-1996 Nissan Pickup Hardbody 2.4L 4 Cyl & 3.0L V6 1993-1998 Nissan Quest 3.0L V6 1998-2001 Nissan Sentra 2.0L 4 Cyl 1994 Nissan Sentra SE-R 2.0L 4 Cyl 2000-2001 Nissan Xterra 2.4L 4 Cyl Infiniti: 1991-2002 Infiniti G20 2.0L 4 Cyl 1996-1999 Infiniti I30 3.0L V6 1993-1997 Infiniti J30 3.0L V6 1990-2001 Infiniti Q45 4.1L & 4.5L V8 1997-2000 Infiniti QX4 3.3L V6 Mercury: 1993-1998 Mercury Villager 2.4L 4 Cyl