{"product_id":"performance-air-filter-for-audi-a8-s8-4n-fb01061","title":"Performance Air Filter for Audi A8 \u0026 S8 4N 3.0 \u0026 4.0 (2017-2021)","description":"\u003ch2\u003eHigh-Flow BMC Performance Air Filter for Audi A8,S8 (4N)\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The BMC Performance Air Filter directly replaces the restrictive factory paper element on the Audi A8 and S8 to lower intake pressure drop, increase volumetric airflow, and sharpen throttle response.\u003c\/p\u003e\n\u003ch3\u003eThe Stock Audi A8,S8 Intake Restriction\u003c\/h3\u003e\n\u003cp\u003eFactory air filtration on the \u003cstrong\u003e4N\u003c\/strong\u003e platform relies on dense, tightly packed cellulose paper media. Under sustained load and boost buildup, these OEM elements generate significant manifold depression across the intake tract. High moisture and debris loading rapidly degrade flow capacity, creating parasitic drag on the turbochargers.\u003c\/p\u003e\n\u003cp\u003eThis restriction throttles intake air velocity, elevates compressor operating temperatures, and blunts transient throttle response on high-output \u003cstrong\u003eEA839\u003c\/strong\u003e and \u003cstrong\u003eEA825\u003c\/strong\u003e powerplants.\u003c\/p\u003e\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered to motorsport standards, this BMC panel filter replaces restrictive paper fibers with multi-layered, low-viscosity oiled cotton gauze clamped in an epoxy-coated alloy mesh. This architecture stabilizes air velocity entering the compressor inlets while maintaining strict ISO 5011 filtration efficiency down to 7 microns.\u003c\/p\u003e\n\u003cp\u003eThe filter features a one-piece polyurethane perimeter mold with zero welded seams, preventing air bypass and thermal deformation inside the engine bay. It drops directly into the OEM airbox housing with no trimming, plumbing changes, or MAF recalibration required.\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e91mm ID x 163mm OD x 200mm 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 FB01061\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 (4N) 50 TDI 3.0 (286 HP) | 2017-2021\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4N) 55 Tfsi 3.0 (340 HP) | 2017-2021\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4N) 60 TDI 4.0 (435 HP) | 2019-2020\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4N) 60 Tfsi 4.0 (460 HP) | 2020-2021\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4N) 60 Tfsi e 3.0 (449 HP) | 2019-2021\u003c\/li\u003e\n\u003cli\u003eAudi A8 (4N) S8 Tfsi 4.0 (571 HP) | 2019-2021\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOEM Cross Reference (BMC):\u003c\/strong\u003e AUDI 4N0129620B, AUDI 4N0129620C\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the 4N A8,S8?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the Audi A8,S8 equipped with the \u003cstrong\u003eEA839\u003c\/strong\u003e and \u003cstrong\u003eEA825\u003c\/strong\u003e engine platforms, provided the factory airbox housing matches standard \u003cstrong\u003e4N\u003c\/strong\u003e filter specifications.\u003c\/p\u003e\n\u003ch4\u003eWill installing this performance filter trigger a Check Engine Light (CEL)?\u003c\/h4\u003e\n\u003cp\u003eNo, the drop-in panel flows within factory ECU closed-loop mass airflow thresholds, retaining exact fuel trims without triggering engine codes.\u003c\/p\u003e\n\u003ch3\u003eThe Audi Precision Standard\u003c\/h3\u003e\n\u003cp\u003eMaintaining high-performance European luxury requires components built to exacting tolerances. This filter provides race-grade air filtration and improved flow without disrupting factory sensor calibrations or requiring aftermarket intake modifications.\u003c\/p\u003e","brand":"BMC","offers":[{"title":"Default Title","offer_id":67576558649592,"sku":"DS-FB01061","price":163.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-air-filter-for-audi-a8-s8-4n-fb01061-1.jpg?v=1791226293","url":"https:\/\/performancechiptuning.com\/products\/performance-air-filter-for-audi-a8-s8-4n-fb01061","provider":"Performance Chip Tuning","version":"1.0","type":"link"}