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Enhance your vehicle's performance with the K&N Engineering E-0646 high-flow air filter, designed specifically for select Audi models including the 2016-2018 Audi A4 and 2017-2018 Audi S4. This washable and reusable filter features a layered, oiled cotton media engineered to improve airflow, allowing your engine to breathe more freely and respond more quickly. By increasing airflow efficiency, this filter helps boost horsepower and torque, providing a noticeable improvement in your vehicle's acceleration and overall performance. Its durable construction ensures long-lasting use, eliminating the need for frequent replacements and saving money over time.
Fitment:
2015 Audi A4 Premium
2015 Audi A4 Premium Plus
2015 Audi A4 Prestige
2015 Audi A4 Quattro Premium
2015 Audi A4 Quattro Premium Plus
2015 Audi A4 Quattro Prestige
2016 Audi A4 Premium
2016 Audi A4 Premium Plus
2016 Audi A4 Quattro Premium
2016 Audi A4 Quattro Premium Plus
2016 Audi S4 Premium Plus
2016 Audi S4 Prestige
2017 Audi A4 Premium
2017 Audi A4 Premium Plus
2017 Audi A4 Prestige
2017 Audi A4 allroad Premium
2017 Audi A4 allroad Premium Plus
2017 Audi A4 allroad Prestige
2017 Audi A4 Quattro Premium
2017 Audi A4 Quattro Premium Plus
2017 Audi A4 Quattro Prestige
2018 Audi A4 Premium
2018 Audi A4 Premium Plus
2018 Audi A4 Prestige
2018 Audi A4 allroad Premium
2018 Audi A4 allroad Premium Plus
2018 Audi A4 allroad Prestige
2018 Audi A4 Quattro Premium
2018 Audi A4 Quattro Premium Plus
2018 Audi A4 Quattro Prestige
2018 Audi A5 Quattro Premium
2018 Audi A5 Quattro Premium Plus
2018 Audi A5 Quattro Prestige
2018 Audi A5 Sportback Premium
2018 Audi A5 Sportback Premium Plus
2018 Audi A5 Sportback Prestige
2018 Audi Q5 Premium
2018 Audi Q5 Premium Plus
2018 Audi Q5 Prestige
2018 Audi RS5 Base
2018 Audi S4 Premium Plus
2018 Audi S4 Prestige
2018 Audi S5 Premium Plus
2018 Audi S5 Prestige
2018 Audi SQ5 Premium Plus
2018 Audi SQ5 Prestige
2019 Audi A4 Premium
2019 Audi A4 Premium Plus
2019 Audi A4 Prestige
2019 Audi A4 Titanium
2019 Audi A4 allroad Premium
2019 Audi A4 allroad Premium Plus
2019 Audi A4 allroad Prestige
2019 Audi A4 Quattro Premium
2019 Audi A4 Quattro Premium Plus
2019 Audi A4 Quattro Prestige
2019 Audi A4 Quattro Ultra sport
2019 Audi A5 Quattro Premium
2019 Audi A5 Quattro Premium Plus
2019 Audi A5 Quattro Prestige
2019 Audi A5 Sportback Premium
2019 Audi A5 Sportback Premium Plus
2019 Audi A5 Sportback Prestige
2019 Audi RS5 Base
2019 Audi SQ5 Premium
2019 Audi SQ5 Premium Plus
2019 Audi SQ5 Prestige
2020 Audi A4 allroad Premium
2020 Audi A4 allroad Premium Plus
2020 Audi A4 allroad Prestige
2020 Audi A4 Quattro Premium
2020 Audi A4 Quattro Premium Plus
2020 Audi A4 Quattro Prestige
2020 Audi A4 Quattro Ultra sport
2020 Audi A5 Quattro Premium
2020 Audi A5 Quattro Premium Plus
2020 Audi A5 Quattro Prestige
2020 Audi A5 Sportback Premium
2020 Audi A5 Sportback Premium Plus
2020 Audi A5 Sportback Prestige
2020 Audi SQ5 Premium
2020 Audi SQ5 Premium Plus
2020 Audi SQ5 Prestige
2021 Audi A4 allroad Premium
2021 Audi A4 allroad Premium Plus
2021 Audi A4 allroad Prestige
2021 Audi A4 Quattro Premium
2021 Audi A4 Quattro Premium Plus
2021 Audi A4 Quattro Prestige
2021 Audi A5 Quattro Premium
2021 Audi A5 Quattro Premium Plus
2021 Audi A5 Quattro Prestige
2021 Audi A5 Sportback Premium
2021 Audi A5 Sportback Premium Plus
2021 Audi A5 Sportback Prestige
2021 Audi Q5 Premium
2021 Audi Q5 Premium Plus
2021 Audi Q5 Prestige
2021 Audi RS5 Base
2021 Audi S5 Premium
2021 Audi S5 Premium Plus
2021 Audi S5 Prestige
2021 Audi SQ5 Premium
2021 Audi SQ5 Premium Plus
2021 Audi SQ5 Prestige
2021 Audi SQ5 Sportback Premium
2021 Audi SQ5 Sportback Premium Plus
2021 Audi SQ5 Sportback Prestige
2022 Audi A4 allroad Premium
2022 Audi A4 allroad Premium Plus
2022 Audi A4 allroad Prestige
2022 Audi A4 Quattro Premium
2022 Audi A4 Quattro Premium Plus
2022 Audi A4 Quattro Prestige
2022 Audi A5 Quattro Premium
2022 Audi A5 Quattro Premium Plus
2022 Audi A5 Quattro Prestige
2022 Audi A5 Sportback Premium
2022 Audi A5 Sportback Premium Plus
2022 Audi A5 Sportback Prestige
2022 Audi Q5 Premium
2022 Audi Q5 Premium Plus
2022 Audi Q5 Prestige
2022 Audi Q5 Sportback Premium
2022 Audi Q5 Sportback Premium Plus
2022 Audi Q5 Sportback Prestige
2022 Audi RS5 Base
2022 Audi S5 Premium
2022 Audi S5 Premium Plus
2022 Audi S5 Prestige
2022 Audi SQ5 Premium
2022 Audi SQ5 Premium Plus
2022 Audi SQ5 Prestige
2022 Audi SQ5 Sportback Premium
2022 Audi SQ5 Sportback Premium Plus
2022 Audi SQ5 Sportback Prestige
2023 Audi A4 Quattro Premium
2023 Audi A4 Quattro Premium Plus
2023 Audi A4 Quattro Prestige
2023 Audi A5 Quattro Premium
2023 Audi A5 Quattro Premium Plus
2023 Audi A5 Quattro Prestige
2023 Audi A5 Sportback Premium
2023 Audi A5 Sportback Premium Plus
2023 Audi A5 Sportback Prestige
2023 Audi Q5 Premium
2023 Audi Q5 Premium Plus
2023 Audi Q5 Prestige
2023 Audi RS5 Base
2023 Audi S5 Premium
2023 Audi S5 Premium Plus
2023 Audi S5 Prestige
2023 Audi SQ5 Premium
2023 Audi SQ5 Premium Plus
2023 Audi SQ5 Prestige
2023 Audi SQ5 Sportback Premium
2023 Audi SQ5 Sportback Premium Plus
2023 Audi SQ5 Sportback Prestige
2024 Audi A4 allroad Premium
2024 Audi A4 allroad Premium Plus
2024 Audi A4 allroad Prestige
2024 Audi A4 Quattro Premium
2024 Audi A4 Quattro Premium Plus
2024 Audi A4 Quattro Prestige
2024 Audi A5 Quattro Premium
2024 Audi A5 Quattro Premium Plus
2024 Audi A5 Quattro Prestige
2024 Audi A5 Sportback Premium
2024 Audi A5 Sportback Premium Plus
2024 Audi A5 Sportback Prestige
2024 Audi Q5 Premium
2024 Audi Q5 Premium Plus
2024 Audi Q5 Prestige
2024 Audi RS5 Base
2024 Audi S5 Premium
2024 Audi S5 Premium Plus
2024 Audi S5 Prestige
2024 Audi SQ5 Premium
2024 Audi SQ5 Premium Plus
2024 Audi SQ5 Prestige
2024 Audi SQ5 Sportback Premium
2024 Audi SQ5 Sportback Premium Plus
2024 Audi SQ5 Sportback Prestige
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
