HQRP Knock Sensor compatible with Nissan Maxima D21 Xterra Frontier Altima Quest Pathfinder 240SX Infiniti G20 I30 J30 Q45 QX4 1995 1996 1997 1998 1999 2000 2001

HQRP Knock Sensor. This is a replacement part of the highest quality. A vehicle knock sensor is a sensor screwed into the engine''s block or cylinder head. It allows the engine to run with the ignition timing advanced as far as possible. The automobile''s computer continues to advance the vehicle''s timing until the knock sensor detects knock or detonation. After that the sensor sends the computer a signal to adjust the timing. This ensures greater FUEL ECONOMY and MORE POWER to get the most from your engine! Compatible with Nissan 200SX SE-R 2.0L l4 1995 1996 1997 1998 Compatible with Nissan 240SX 1991 1992 1993 1994 1995 1996 1997 1998 Compatible with Nissan Altima 1993 1994 1995 1996 1997 1998 1999 2000 2001 Compatible with Nissan D21 3.0 V6 1990 1991 1992 1993 1994 Compatible with Nissan Frontier 1998 Compatible with Nissan Frontier 2.4L l4 1999 2000 Compatible with Nissan Maxima SE 1992 1993 1994 Compatible with Nissan Maxima 1995 1996 1997 1998 1999 Compatible with Nissan NX 2.0L l4 1991 1992 1993 Compatible with Nissan Pathfinder 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Compatible with Nissan Pickup 3.0L V6 1995 1996 Compatible with Nissan Quest 1993 1994 1995 1996 1997 1998 Compatible with Nissan Sentra SE-R 2.0L l4 1991 1992 1993 1994 Compatible with Nissan Sentra SE 2.0L l4 1998 1999 2000 2001 Compatible with Nissan Xterra 2.4L l4 2000 Compatible with Mercury Villager 1993 1994 1995 1996 1997 1998 Compatible with Infiniti G20 1991 1992 1993 1994 1995 1996 Compatible with Infiniti G20 1999 2000 2001 2002 Compatible with Infiniti I30 1996 1997 1998 1999 Compatible with Infiniti J30 1993 1994 1995 1996 1997 Compatible with Infiniti Q45 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 Compatible with Infiniti QX4 1997 1998 1999 2000