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. Furthermore we've incorporated at T304 stainless steel heatshield to keep hot engine bay heat from the turbocharger away from the airbox. 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.. 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.. Please Note: This system does not fit vehicles with engines featuring a MAF sensor on the intake. Examples include the CVK/CVL/DBP/DEM/DKY/DLV/DLV/DRX engine codes and may include more. Excludes 2017+ Audi A4 2.0T with MAF on intake (DBPA / 188-190 HP) Excludes 2021+ Audi A4 Quattro 2.0T with MAF on intake (DMSA / 201 HP) Excludes 2021+ Audi A5 Sportback 2.0T with MAF on intake (DMSA / 201 HP). This is the ultimate intake upgrade for the Audi A4 and A5 (B9) with the 2.0T EA888 Gen 3 and Gen 4 engines. It flows 46% more than stock, reduces pressure drop, and improves turbocharger efficiency. This directly translates to more horsepower and torque making this a simple upgrade for more power you can feel.. 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 clamps needed for an easy install.. Fits Audi A4 17-18, A4 allroad 17-24, A4 Quattro 17-24, A5 Quattro 18-24, A5 Sportback 18-24. Inlet piping diameter is maximized from the 4” filter all the way to the turbocharger. Massive 7” x 7” filter with a 4” outlet and 5.5” frontal inlet. Full intake system: Inlet, airbox, filter, and inlet piping. High flow and washable pleated cotton gauze filter material. Airbox has additional flow paths faced away from the engine. APR 17-25 Audi A4 Allroad 2.0T Carbon Fiber Intake System. APR Carbon Fiber Intake - 2.0T A4/A5 (B9). Reduced pressure drop at the turbo inlet. T304 stainless steel heatshield. Turbo operates more efficiently. Flows 46% more than stock. Carbon fiber construction. Enhanced engine sound. Turbo spool faster. Emissions friendly. INTAKE B9 A4A5. Intake

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