The K&N E-2999 is a reusable round straight universal air filter built on the brand's High-Flow design, with layered, oiled cotton gauze media. The manufacturer lists it at 6.25 in outside diameter and 7.75 in tall, with a 4 in inside flange diameter and a rubber top. Its product page places it on the Audi A8 3.0L V6 diesel for 2010-2017. Where a disposable paper element is replaced every service interval, this cotton element can be cleaned and re-oiled, and the manufacturer backs it with a No-Hassle Lifetime Limited Warranty. The manufacturer says the design is meant to improve airflow and add horsepower while still trapping contaminants, though it does not publish a horsepower figure.
Fitment is the first thing to verify. The listing title covers 2010-2015 Audi A8 models with 2.0L through 4.2L engines, but the manufacturer's page only confirms the 3.0L diesel for 2010-2017, and other sources show different year ranges. Check your VIN and engine code against the manufacturer before ordering. The filter is a drop-in design meant to fit the factory air box, so no housing modifications are needed. Searchers looking for a K&N E-2999 Audi A8 3.0 TDI drop-in air filter, reusable cotton gauze air filter, or A8 diesel intake filter upgrade will find this product's core specs here.
The manufacturer's product page confirms the Audi A8 V6-3.0L diesel for 2010-2017. The broader 2.0L to 4.2L range and 2010-2015 year span in the title could not be confirmed on the manufacturer's site, so verify your VIN and engine code with the manufacturer before ordering.
Yes. The manufacturer describes the oiled cotton gauze element as washable and reusable, engineered to last the life of the vehicle. Cleaning intervals vary between sources, so follow the manufacturer's care instructions for service timing.
The manufacturer lists a No-Hassle Lifetime Limited Warranty on this filter.
The manufacturer designs this filter as a drop-in replacement that installs easily into the factory air box, so the job centers on opening the air box, swapping the element, and reseating the lid. Confirm the exact steps for your model year against the manufacturer's install instructions before you start, and make sure the air box seals properly after reassembly so unfiltered air cannot bypass the element.
