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2017-2019 Audi B9 S4
and track proven to produce real power
Manufactured byEventuri
and downpipe combined
Completed in carbon fibre
Pipercross Car Panel Filter PP1978 127 2017-2019 Audi B9 S4Pipercross Panel Filter PP1978 measures 187mm x 178mm Benefits of a Pipercross panel filter: 30 40% more air flow over your OEM paper filter Better for the environment (washable and reuseable) Improved fuel economy Lifetime warranty on manufacturing defects Handmade in the UK The low maintenance and long lifespan aspects of a Pipercross filter come from the special triple layer foam that is used on all Pipercross filters. The outer core is coarse foam