A knock sensor is located on the intake manifold, cylinder, or engine block. The purpose of the knock sensor is to sense unusual pulsations caused by the engine knock or detonation.
Symptoms of a bad knock sensor are check engine light CEL on, loud sounds, bad fuel mileage, poor acceleration and poor engine performance.
When you replace the knock sensor please be careful the grime will fall into the cylinders when you pull the intake manifold off.

Compatible with Ford Vehicles:
2007-2011 Crown Victoria
2000-2014 E150
2000-2014 E250
2000-2019 E350
2000-2019 E450
2002-2003 E550
2000-2005 Excursion
1999-2004 Expedition
1999-2010 F150
2004 F150 Heritage
1999 F250
1999-2004 F250 Super Duty
1999-2004 F350 Super Duty
1999-2004 F450 Super Duty
1999-2004 F550 Super Duty
1999-2004 F53
2005-2006 GT
2002-2006 Lobo

Compatible with Lincoln Vehicles:
2002 Blackwood
1999-2010 Navigator
2004-2011 Town Car

Compatible with Mercury Vehicles:
2007-2011 Grand Marquis

Replaces Part #: KS57, XL3F12A699AA knock sensor.

NOTE: This is NOT a genuine part, it's a aftermarket replacement part manufactured by Allmotorparts.

NOTE: To ensure accurate fitment, please confirm your vehicle information in the above compatibility section and the description.