APR PEX Intake - 3.0T S4/S5 (B9)

Fits 2018-2023 Audi S4, S5

Engine Application


Part # CI100047
3 Reviews

APR PEX Intake - 3.0T S4/S5 (B9)

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This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020.

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This is the perfect intake upgrade for the Audi S4 and S5 (B9). It flows 31% more than stock, reduces pressure drop, and improves turbocharger efficiency. This directly translates to +19 AWHP and +20 AWFT-LBS of torque on top of our Stage 1 (93) tune making this a simple upgrade for more power you can feel, and does so at an incredible value. Our system is a full upgrade as it replaces all of the intake components from the inlet scoop all the way to the turbo inlet. This is extremely important as focusing on the airbox alone does not address the main restrictions found in the factory intake system. Simply put, our system flows better than stock, makes more power, puts less strain on the turbocharger, looks great under the hood, and enhances the sound of the engine. The factory turbocharger inlet pipe is a big restriction point because it's small. It's common for most intake systems to only focus on the filter and airbox, but doing so only has minimal impact on performance. Furthermore, upgrading the turbocharger inlet pipe only has minimal impact on performance if it still necks down to with the factory or aftermarket intake airbox. We solve this by making our pipe as large as possible from the 4" filter outlet all the way to the turbocharger inlet in one piece! This minimizes pressure drop and increases flow through the system far better than a multi-piece solutions. Our system is made from PEX and looks great stunning under the hood, matching the texture of other components. By using this material we are able to make the wall-thickness of the tubes smaller, maximizing the internal diameter, increasing performance even more! The material also allows us to make complex organic shapes necessary when working in a tight engine bay. The airbox is fed from an inlet scoop that maximizes the flow path into the airbox. The airbox has cutouts allowing for additional flow paths directed away from the engine. This keeps air temps down, and increases sound without it being overbearing. The filter is massive as well. A big filter is desirable as increasing filtered surface area keeps the filter breathing easily for many miles as it filters dirt, dust, and particles. It measures 7" by 7" with a 5.5" frontal inlet, and a 4" outlet. The filter media is a washable pleated cotton gauze that can be cleaned for extended life, or replaced with ease. Our kit includes everything you need to bolt on and go. No new tuning is needed to run this product, and the product is emissions friendly. We include all new OEM gaskets and all the nuts, bolts, and clamps needed for an easy install. Lastly, thanks to our billet turbo inlet adapter, this is the only intake you'll ever need. Should you later upgrade your turbo, a new, larger adapter can be installed to adapt to the larger inlet simply by swapping out the billet adapter!


  • Full intake system: Inlet, airbox, filter, and inlet piping
  • +19 AWHP & +20 AWFT-LBS gain over stock (APR Stage 1 93)
  • Flows 31% more than stock
  • Reduced pressure drop at the turbo inlets
  • Improved linearization across the turbos
  • Enhanced engine sound
  • OEM appearing PEX construction
  • Turbos spool faster
  • Turbos operate more efficiently
  • Massive 7” x 7” filter with a 4” outlet and 5.5” frontal inlet
  • High flow and washable pleated cotton gauze filter material
  • Airbox has additional flow paths faced away from the engine
  • Inlet piping diameter is maximized from the 4” filter all the way to the turbocharger
  • Inlet piping addresses system restriction, unlike competitive airbox systems that are compatible with factory inlet piping
  • Billet turbo adapter ring make fitting this system to a larger turbo possible
  • New OEM gaskets included
  • Incredible Value
  • Emissions friendly
Brand APR
Emission Code7
Engine Application3.0T
Filter ColorRed
Filter MaterialPleated Cotton Gauze
Product TypeIntake System
Part NumberCI100047

This part is legal under the provisions of EPA’s Tampering Policy dated November 23rd, 2020. The company has reasonable basis (test results) to verify that this product allows the vehicle to operate within legal emissions standards and is therefore legal to be sold for on-street use in all states that accept the legal provisions of the Clean Air Act and the EPA Tampering Policy. This product is NOT LEGAL FOR SALE OR USE IN THE STATE OF CALIFORNIA. Testing with the California Air Resources Board, in order to achieve 50-state compliance, is pending with CARB. Once testing is complete with California, and an E.O. number is issued, this product will be updated to 50-state legal status.

Have a question about this product?

  • Question

    Good morning, What courier do you send to Poland? Do you have the filter in the link below? When would it be possible to ship. I need it by March 11, 2023. How much does shipping to Poland cost? Please reply. Greetings Tomek https://www.goapr.com/products/engine_hardware/intake/apr_pex_intake_system_-_b9_30t/parts/CI100047

    By Tomasz Ki on March 2, 2023

    For sales outside the USA, please use a dealer: www.goapr.com/dealers/
  • Question

    does this intake fit the c8 a6 3.0 motor

    By Ben Sneed on February 24, 2023

    You need part CI100048
  • Question

    This intake does fit the 2019 3.0 A6 right? It’s the same engine with a slightly different ecu

    By Ben Sneed on February 14, 2023

    You need this intake system: https://www.goapr.com/CI100048 CI100048
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The factory intake simply can’t match the performance of ours. The factory system flows a maximum of 400 CFM at 28” in of H2O. We improve this by 31% as our full intake system flows 525 CFM! We’ve reduced pressure drop across the system and improved turbocharger efficiency. The turbo spools faster, and operates in a more efficient region of the compressor map. This directly translates to more power and torque you can feel. On our Stage 1 (93) S4 we saw an improvement of 19 AWHP and 20 AWFT-LBS of torque simply by installing our intake system!

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