K&N OE Replacement Performance Panel Air Filter - Audi S4/RS4 B9 Quattro milltek-variant-C8 4.0 V8 bi-turbo (Non OPF/GPF Models - USA/ROW Models) 2020-2023 keep to the viscosity class

keep to the viscosity class stipulated by the transmission manufacturer

Depth: 80mm

so is completely reversible if need be and includes all fixtures and fittings

but worth checking if washers are on the removed bolts and to match if required

Reduced engine movement will improve gear shift quality and throttle response

K&N OE Replacement Performance Panel Air Filter - Audi S4/RS4 B9 Quattro milltek-variant-C8 4.0 V8 bi-turbo (Non OPF/GPF Models - USA/ROW Models) 2020-2023 keep to the viscosity classThe K&N OE Replacement Cotton Gauze Performance Air Filter designed to increase horsepower and acceleration while providing excellent filtration. K&N air filters are covered by the famous K&N Million Mile Limited Warranty and will be the last air filter your car will ever need. Both washable & reusable, and is designed to directly fit into the OE factory air box. note: image is for illustration purposes and may differ on delivery