Features The drastic shocking caused by the following reasons: ignite too early ,the exhaust circulation is bad,the Low standard fuel will lead to damaged of the engine. The knock sensor provides knock signal to the computer, which makes the computer re-adjust the ignition timing to prevent further knock. In fact,they play a role in oxygen sensor to feedback control loop ignition timing. Function The knock sensor is a listening device located inside the engine near the intake manifold or the pistons that is designed to detect pressure inside the engine. The vibrations that it records as a result of this pressure are converted into voltage and sent to the car's engine control unit (ECU). This is to prevent detonation in the engine when the fuel/air mixture explodes too quickly and causes engine knock or "pinging." The ECU takes the information provided by the knock sensor and adjusts the ignition timing to the engine. Work with: 2002 Subaru Forester All 2002 Subaru Impreza Outback Wagon 4-Door 2.5L 2002 Subaru Impreza RS Sedan 4-Door 2.5L 2002 Subaru Impreza TS Wagon 4-Door 2.5L 2001 Subaru Forester All 2001 Subaru Impreza All 2001 Subaru Legacy All 2001 Subaru Outback Base Wagon 4-Door 2.5L 2001 Subaru Outback Limited Sedan 4-Door 2.5L 2001 Subaru Outback Limited Wagon 4-Door 2.5L 2000 Subaru Forester All 2000 Subaru Impreza All 2000 Subaru Legacy All 2000 Subaru Outback Base Wagon 4-Door 2.5L 2000 Subaru Outback Limited Sedan 4-Door 2.5L 2000 Subaru Outback Limited Wagon 4-Door 2.5L 1999 Subaru Forester All 1999 Subaru Impreza All Package Includes 1 x Knock Sensor for Subaru Knock Sensor Forester Legacy Impreza Outback 2.2L 2.5L

• Subaru Knock Sensor

Subaru Knock SensorWAIKEI