Available to Order
Not sure which one? Ask us to confirm fitment first →For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
Send the vehicle, engine and current setup if you want us to confirm the exact application before checkout.
| Manufacturer | MST Performance |
| Product Type | Cold air intake system |
| SKU | MST-AD-A406 |
| Vehicle Application | Audi S4 (8T) 3.0 TFSI (EA839) 2019+; Audi S4 (B9) 3.0 TFSI (EA839) 2019+ |
| Material | Aluminium intake pipework |
| Air Filter | Nanofiber dry filter, washable and reusable |
| Included Items | Pipework, filter, heat shield, mounting hardware, instructions |
Audi'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.
The 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.
| Manufacturer | MST Performance |
| Product Type | Cold air intake system |
| SKU | MST-AD-A406 |
| Vehicle Application | Audi S4 (8T) 3.0 TFSI (EA839) 2019+; Audi S4 (B9) 3.0 TFSI (EA839) 2019+ |
| Material | Aluminium intake pipework |
| Air Filter | Nanofiber dry filter, washable and reusable |
| Included Items | Pipework, filter, heat shield, mounting hardware, instructions |
The 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.
No — pipework, filter, heat shield, hardware and instructions are all in the box for a direct swap.
Clean 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.
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Model year, engine, drivetrain, hardware and existing modifications can all change what fits. Check the applications and supplier notes above, or send us your exact vehicle and setup before ordering.
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.
