2009 Audi S4 Ignition Relays, Sensors & Switches
Select Your Submodel
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TRQ® - Ignition Knock Sensor$23.97 + Save an extra $1.80 with iD FastTrack -
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- Facet® - Ignition Knock Sensor$52.44 - $53.77
- Vemo® - Ignition Knock Sensor$59.88 - $85.99
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- WVE® - Ignition Switch$162.52
- Vemo® - Ignition Relay$15.89
