Standard Ignition Ignition Knock (Detonation) Sensor P/N:KS361

Help your engine management system listen for detonation with the Standard Ignition Knock Sensor KS361. It is a direct-fit replacement for the 2005-2009 Audi A8 Quattro. See the Buyer's Guide tab for engine details.

A knock sensor picks up the vibration created when the air-fuel charge ignites out of turn, which is heard as knock or pinging. It sends a signal to the engine computer, which can then adjust ignition timing. Standard Ignition builds and checks this sensor with a focus on consistent signal output:

• Vibration tested: every unit is 100% tested using an accelerometer vibration test.
• Broad frequency response: designed to respond to knock frequencies up to 1000 Hz. This lets it handle shifts in engine knock frequency across a broad range of vehicle conditions.
• Monitored output: during manufacturing, an automated data acquisition system continuously monitors sensor output. It checks that the sensor responds with the appropriate voltage at the specified frequency range.
• Controlled production: as a global manufacturer of emission components, Standard Ignition maintains quality control from componentry through to the finished product.

Signs a knock sensor may need replacing include a check engine light with a knock sensor code and audible pinging under load. You may also notice reduced power or fuel economy if the engine computer is retarding timing. These symptoms can have other causes, so diagnose the problem before replacing the sensor.

Interchange: 07C905377AA · S8961 · SU14160 · DKS801