{"product_id":"079-103-542-e-genuine-vw-audi-engine-oil-separator","title":"079-103-542-E Genuine VW\/Audi Engine Oil Separator","description":"\u003ch2\u003eGenuine VW\/Audi 4.0T V8 Engine Oil Separator\u003c\/h2\u003e\u003cp\u003e079-103-542-E is the genuine oil separator assembly used in the matched 4.0L twin-turbocharged V8 crankcase ventilation installations below. It separates entrained oil from crankcase vapors before those vapors continue through the engine’s ventilation system. Correct operation helps maintain the intended vapor flow and limits oil carryover into the intake path.\u003c\/p\u003e\u003cp\u003eThis listing supplies \u003cstrong\u003eone oil separator assembly\u003c\/strong\u003e as represented by the archive photograph, including its housing and integrated connections. It is not a complete engine ventilation overhaul kit. Identify any separate hoses, mounting hardware or additional seals required by the specific repair procedure before beginning service.\u003c\/p\u003e\u003ch3\u003eTechnical details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM number:\u003c\/strong\u003e 079-103-542-E \/ 079103542E.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem:\u003c\/strong\u003e Crankcase ventilation and oil separation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirmed engine family:\u003c\/strong\u003e Matched Audi EA824 4.0L twin-turbocharged gasoline V8 applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssembly features:\u003c\/strong\u003e Molded separator housing, ventilation connections and the heat shielding shown in the original photograph.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e One separator assembly per purchased unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConfirmed earlier revisions:\u003c\/strong\u003e 079103542B and 079103542D where the factory replacement assignment specifies this E revision.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe separator must match the original ventilation layout, hose connections and sealing interfaces. Engine size alone is not enough to identify the correct assembly across different Audi engine generations. Verify the full part number and factory replacement assignment before ordering, especially where the engine or ventilation components have previously been changed.\u003c\/p\u003e\u003ch3\u003eCommon reasons to replace\u003c\/h3\u003e\u003cp\u003eReplacement may be required when the housing is cracked, a connection is damaged, the separator has an internal ventilation fault or diagnostic testing identifies incorrect crankcase pressure or excessive oil carryover. Whistling, rough idle, oil leakage, increased oil consumption or intake contamination may warrant inspection of the crankcase ventilation system.\u003c\/p\u003e\u003cp\u003eThose symptoms can have other causes. Check the connected hoses, sealing surfaces and engine condition, and follow the specified diagnostic procedure before replacing the separator. Turbocharger faults, worn engine components or an unrelated intake leak require separate diagnosis. A new separator does not repair a split hose, damaged connector or leaking seal elsewhere in the system.\u003c\/p\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eThe following table identifies confirmed engine and trim applications for this E-revision separator. Match the installed ventilation arrangement and the full factory part assignment. Replacement coverage for earlier B\/D revisions applies only where that specific factory supersession is confirmed.\u003c\/p\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eVehicle\u003c\/th\u003e\n\u003cth\u003eModel years\u003c\/th\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003eApplication restrictions\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A8\u003c\/td\u003e\n\u003ctd\u003e2013–2015\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; Base; standard wheelbase quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A8\u003c\/td\u003e\n\u003ctd\u003e2013–2016\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; L long-wheelbase quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A8\u003c\/td\u003e\n\u003ctd\u003e2017\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; L Sport long-wheelbase quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi RS7\u003c\/td\u003e\n\u003ctd\u003e2014–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7; Base; quattro Sportback; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi RS7\u003c\/td\u003e\n\u003ctd\u003e2016–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7; Performance; quattro Sportback; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S7\u003c\/td\u003e\n\u003ctd\u003e2013–2016\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7; Base; quattro Sportback; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S7\u003c\/td\u003e\n\u003ctd\u003e2017–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7; Premium Plus or Prestige; quattro Sportback; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S8\u003c\/td\u003e\n\u003ctd\u003e2013–2016\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; Base; quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S8\u003c\/td\u003e\n\u003ctd\u003e2016–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; Plus; quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S6\u003c\/td\u003e\n\u003ctd\u003e2013–2015\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7; Base; quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S6\u003c\/td\u003e\n\u003ctd\u003e2016–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7 facelift; Premium Plus; quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi A8\u003c\/td\u003e\n\u003ctd\u003e2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eD4; L long-wheelbase quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003e4.0L gasoline V8; production after 08\/01\/2016; original ventilation installation assigned 079103542E. Verify installed separator and factory replacement assignment; one assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAudi S6\u003c\/td\u003e\n\u003ctd\u003e2016–2018\u003c\/td\u003e\n\u003ctd\u003e4.0L twin-turbocharged gasoline V8; EA824\u003c\/td\u003e\n\u003ctd\u003eC7 facelift; Prestige; quattro sedan; No transmission-specific restriction listed for the confirmed separator\u003c\/td\u003e\n\u003ctd\u003eOriginal 4.0L crankcase ventilation installation assigned 079103542E, including confirmed earlier 079103542B\/D replacements. Match full revision and installed ventilation layout; one separator assembly supplied.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation and service guidance\u003c\/h3\u003e\u003cp\u003eFollow the factory repair procedure for access to the separator in the 4.0T engine compartment. Allow hot components to cool, keep dirt out of open intake and ventilation passages and record the original hose routing before disconnecting parts. Inspect the surrounding connections and seals for damage during removal.\u003c\/p\u003e\u003cp\u003eInstall the replacement without forcing hose fittings or distorting the housing. Renew the separately required seals and fasteners identified by the repair procedure, and tighten the specified mounting hardware to the engine-specific values. Retain the required heat protection and restore all disconnected hoses and wiring correctly.\u003c\/p\u003e\u003cp\u003eAfter installation, perform the required checks for sealing, crankcase ventilation operation and stored faults. Inspect for leaks and confirm that the original complaint has been resolved using the applicable diagnostic procedure. This assembly restores the assigned separator function; it does not change the engine calibration or provide a performance upgrade.\u003c\/p\u003e","brand":"Genuine VW\/Audi","offers":[{"title":"Default Title","offer_id":48020430717105,"sku":"079-103-542-E","price":453.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/1379\/3201\/files\/079-103-542-e-genuine-vw-audi-1.jpg?v=1791816325","url":"https:\/\/hstuning.com\/products\/079-103-542-e-genuine-vw-audi-engine-oil-separator","provider":"HS Tuning ","version":"1.0","type":"link"}