{"product":{"id":10933081440598,"title":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406","body_html":"\u003ch2\u003eSummary\u003c\/h2\u003e\u003cp\u003eAudi's S4 with the EA839 3.0 TFSI V6 is seriously rapid yet almost silent about it. This MST Performance cold air intake brings the engine's character forward: aluminium pipework, a heat-shielded nanofiber dry filter and a richer induction sound under load, fitted as a direct replacement for the factory setup. It is the natural first modification for an S4 that gets driven, not just commuted.\u003c\/p\u003e\u003ch2\u003eBest For\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eS4 owners on the 2019-on EA839 V6 chasing a more vocal, responsive feel from everyday driving\u003c\/li\u003e\n\u003cli\u003eFast-saloon builds where a tidy, engineered engine bay matters as much as the drive\u003c\/li\u003e\n\u003cli\u003eDrivers planning staged tuning and starting with breathing before calibration work\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eKey Specs\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eManufacturer: MST Performance\u003c\/li\u003e\n\u003cli\u003eProduct Type: Cold air intake system\u003c\/li\u003e\n\u003cli\u003eSKU: MST-AD-A406\u003c\/li\u003e\n\u003cli\u003eVehicle Application: Audi S4 3.0 TFSI (EA839), 2019 on — 8T and B9 generation references both shown in the fitment table\u003c\/li\u003e\n\u003cli\u003eMaterial: Mandrel-bent 6061 or cast aluminium intake pipework\u003c\/li\u003e\n\u003cli\u003eAir Filter: Nanofiber dry high-flow filter, washable and reusable\u003c\/li\u003e\n\u003cli\u003eIncluded Items: Intake pipework, filter, heat shield, mounting hardware and fitting instructions\u003c\/li\u003e\n\u003cli\u003eFitment type: vehicle-specific, direct OEM replacement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBringing The EA839 V6 To Life\u003c\/h2\u003e\u003cp\u003eThe turbocharged V6 responds well to freer breathing, and MST's approach keeps it clean: smooth aluminium runs, a shielded filter kept away from engine-bay heat, and a kit that is dyno and road tested rather than guessed. Day to day you get a sharper-feeling throttle and an intake note that finally matches the badge.\u003c\/p\u003e\u003ch2\u003eFitment And Setup Checks\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eThis kit is for the S4 3.0 TFSI (EA839) from 2019 on — confirm your engine code and registration year before ordering\u003c\/li\u003e\n\u003cli\u003eThe fitment table shows both 8T and B9 S4 references for the same 2019-on EA839 application; if you are unsure which your car is, send us the registration and we will confirm\u003c\/li\u003e\n\u003cli\u003eFitting instructions are included; a professional fitter is the safe route if you are not confident in the bay\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eMST Performance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eCold air intake system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eMST-AD-A406\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVehicle Application\u003c\/td\u003e\n\u003ctd\u003eAudi S4 (8T) 3.0 TFSI (EA839) 2019+; Audi S4 (B9) 3.0 TFSI (EA839) 2019+\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAluminium intake pipework\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAir Filter\u003c\/td\u003e\n\u003ctd\u003eNanofiber dry filter, washable and reusable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Items\u003c\/td\u003e\n\u003ctd\u003ePipework, filter, heat shield, mounting hardware, instructions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eDoes this fit both S4 generation labels shown?\u003c\/h3\u003e\u003cp\u003eThe fitment table shows the same 2019-on 3.0 TFSI EA839 application under both 8T and B9 references. What matters is the engine and year: a 2019-on S4 with the EA839 V6. If in doubt, confirm with us before ordering.\u003c\/p\u003e\u003ch3\u003eWill I need to buy anything else to fit it?\u003c\/h3\u003e\u003cp\u003eNo — pipework, filter, heat shield, hardware and instructions are all in the box for a direct swap.\u003c\/p\u003e\u003ch3\u003eHow often does the filter need attention?\u003c\/h3\u003e\u003cp\u003eClean the washable dry filter around every 20,000 km and replace it at around 60,000 km. It takes minutes and keeps the intake flowing as intended.\u003c\/p\u003e","vendor":"MST Performance","product_type":"Induction Kit","created_at":"2026-07-03T12:59:26+01:00","handle":"mst-performance-cold-air-intake-system-audi-s4-8t-3-0-tfsi-ea839-2019-mst-ad-a406","updated_at":"2026-08-21T10:28:34+01:00","published_at":"2026-07-03T12:59:26+01:00","template_suffix":null,"published_scope":"global","tags":"brand:mst-performance, cat:air-intake, dept:performance-parts, fits:audi-s4, make:audi, type:induction-kit","variants":[{"id":54418512019798,"product_id":10933081440598,"title":"Default Title","price":"398.32","sku":"MST-AD-A406","position":1,"compare_at_price":"","fulfillment_service":"manual","inventory_management":null,"option1":"Default Title","option2":null,"option3":null,"created_at":"2026-07-03T12:59:26+01:00","updated_at":"2026-08-21T10:28:34+01:00","taxable":true,"barcode":null,"grams":4000,"image_id":null,"weight":4.0,"weight_unit":"kg","requires_shipping":true,"quantity_rule":{"min":1,"max":null,"increment":1},"price_currency":"GBP","compare_at_price_currency":"","quantity_price_breaks":[]}],"options":[{"id":14003653804374,"product_id":10933081440598,"name":"Title","position":1,"values":["Default Title"]}],"images":[{"id":82424541741398,"product_id":10933081440598,"position":1,"created_at":"2026-07-14T13:08:49+01:00","updated_at":"2026-07-14T13:08:52+01:00","alt":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406 | Image 1","width":1500,"height":1500,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/533e7528-076d-42fe-87b6-3cadfc72325d__22259.jpg?v=1784030932","variant_ids":[]},{"id":82424541774166,"product_id":10933081440598,"position":2,"created_at":"2026-07-14T13:08:49+01:00","updated_at":"2026-07-14T13:08:52+01:00","alt":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406 | Image 2","width":1800,"height":1243,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/0046fb7f-3995-4cbb-a564-538958ed43bd__98207.jpg?v=1784030932","variant_ids":[]},{"id":82424541806934,"product_id":10933081440598,"position":3,"created_at":"2026-07-14T13:08:49+01:00","updated_at":"2026-07-14T13:08:51+01:00","alt":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406 | Image 3","width":1800,"height":1243,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/8e2e9c8f-81c6-4abe-b58e-005fa38cc751__17905.jpg?v=1784030931","variant_ids":[]},{"id":82424541839702,"product_id":10933081440598,"position":4,"created_at":"2026-07-14T13:08:49+01:00","updated_at":"2026-07-14T13:08:52+01:00","alt":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406 | Image 4","width":1800,"height":1350,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/5de8d47f-5948-4ea5-b2ba-c68259b8a589__61695.jpg?v=1784030932","variant_ids":[]}],"image":{"id":82424541741398,"product_id":10933081440598,"position":1,"created_at":"2026-07-14T13:08:49+01:00","updated_at":"2026-07-14T13:08:52+01:00","alt":"MST Performance Cold Air Intake System – Audi S4 (8T) - 3.0 TFSI (EA839) 2019+ | MST-AD-A406 | Image 1","width":1500,"height":1500,"src":"https:\/\/cdn.shopify.com\/s\/files\/1\/0952\/1849\/9926\/files\/533e7528-076d-42fe-87b6-3cadfc72325d__22259.jpg?v=1784030932","variant_ids":[]}}}