About this part
What it does. K And N Replacement Air Filter K&N 400-E-1983 keeps dust and debris out of the intake so the engine draws clean air.
Symptoms that point to this part
- Reduced fuel economy
- Sluggish acceleration
- Visibly dirty or clogged filter element
Service note. Typically inspected at every service and replaced roughly annually.
Fitment. Catalogued as fitting 2018 Audi S7, 2018 Audi A6 Quattro, 2018 Audi S6. Engine, sub-model and trim can narrow fitment further, so check those attributes on the listing before ordering.