{"product_id":"performance-air-filter-for-audi-a8-4h-fb743-08","title":"Performance Air Filter for Audi A8 4H 2.0 to 4.2 (2010-2018)","description":"\u003ch2\u003eHigh-Flow Drop-In Performance Air Filter for Audi A8 (4H)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The BMC performance panel air filter replaces the restrictive factory paper element on the Audi A8 to lower intake pressure drop, maximize volumetric efficiency, and sharpen throttle response.\u003c\/p\u003e\n\u003ch3\u003eThe Stock Audi A8 Airbox Limitation\u003c\/h3\u003e\n\u003cp\u003eFactory air filtration on the \u003cstrong\u003eAudi A8 4H\u003c\/strong\u003e relies on dense, multi-pleated cellulose paper media. While adequate for basic dust holding capacity, standard paper creates significant parasitic intake resistance at higher mass airflow rates. As the media captures airborne particulate, the fibers swell and load unevenly, exacerbating pressure drop across the intake tract.\u003c\/p\u003e\n\u003cp\u003eOn forced-induction platforms like the twin-turbo \u003cstrong\u003eEA824 4.0 TFSI\u003c\/strong\u003e and supercharged \u003cstrong\u003eEA837 3.0 TFSI\u003c\/strong\u003e, this intake restriction forces the compressor to work harder, increasing intake air temperatures (IATs) and dampening low-end transient throttle response.\u003c\/p\u003e\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eBMC FB743\/08\u003c\/strong\u003e performance air filter resolves intake restriction via multi-layered, low-viscosity oiled cotton gauze encased in an alloy mesh. Manufactured using a single-piece \"Full Moulding\" process without glued corners, the polyurethane frame eliminates seam breakage and bypass leaks inside the OEM airbox. This depth-filtration architecture stabilizes volumetric intake airflow while effectively stopping contaminants down to 7 microns.\u003c\/p\u003e\n\u003cp\u003eThe oiled gauze substrate delivers higher laminar airflow across the intake runner without triggering mass airflow (MAF) sensor faults, and the filter is fully washable and regenerable using a BMC cleaning kit.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFilters per kit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 (2 required on 4.2 TDI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e93mm ID x 151mm OD x 204mm H cylindrical\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBMC FB743\/08\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eCompatibility \u0026amp; OEM Reference\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eFits the following vehicles (BMC fitment data):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudi A8 (4H) 2.0 Hybrid (265 HP) | 2012-2018\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 2.5 TFSI (204 HP) | 2012-2016\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (204 HP) | 2011-2013\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (211 HP) | 2010-2015\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (239 HP) | 2012-2016\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (250 HP) | 2010-2018\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (258 HP) | 2013-2018\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TDI (262 HP) | 2015-2018\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TFSI (290 HP) | 2010-2014\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TFSI (310 HP) | 2013-2017\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 3.0 TFSI (333 HP) | 2010-2018\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 4.0 TFSI (420 HP) | 2012-2014\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 4.2 TDI [2 Filters Required] (350 HP) | 2010-2014\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4H) 4.2 TDI [2 Filters Required] (385 HP) | 2013-2018\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBMC marks the 4.2 TDI as [2 Filters Required]; each package contains 1 filter, so order 2 for that engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Cross Reference (BMC):\u003c\/strong\u003e VW GROUP 4H0129620D, VW GROUP 4H0129620L\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the 4H A8?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the Audi A8 equipped with the \u003cstrong\u003e4H\u003c\/strong\u003e chassis factory airbox. \u003cstrong\u003eConfirm your vehicle's specific airbox dimensions and whether your powertrain requires a dual-filter configuration prior to ordering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch4\u003eWill installing this oiled cotton filter trigger a Check Engine Light (CEL)?\u003c\/h4\u003e\n\u003cp\u003eNo, the precision oiled media is pre-treated from the factory and will not coat hot-wire MAF sensors or trigger air-fuel metering codes when installed correctly.\u003c\/p\u003e\n\u003ch3\u003eThe Audi Engineering Caliber\u003c\/h3\u003e\n\u003cp\u003eEngineered to match European flagship executive standards, this panel filter maintains factory acoustic dampening and emission compliance while sustaining optimum airflow under heavy turbocharger load.\u003c\/p\u003e","brand":"BMC","offers":[{"title":"Default Title","offer_id":67576566841592,"sku":"DS-FB743\/08","price":108.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-air-filter-for-audi-a8-4h-fb743-08-1.jpg?v=1791226489","url":"https:\/\/performancechiptuning.com\/products\/performance-air-filter-for-audi-a8-4h-fb743-08","provider":"Performance Chip Tuning","version":"1.0","type":"link"}