Dinan 21-26 BMW 430i Air Filter

While factory paper filters function admirably, they can be restrictive to performance goals given the material used. They also require being replaced numerous times during the lifespan of the vehicle, which can add up to a substantial amount in maintenance costs. Limited performance and increased maintenance costs are never ideal but can be resolved effectively and economically in the case of filters. Dinan High Flow Drop-in Replacement Filters are constructed of 4 layers of cotton gauze that allow better flow and less pressure drop than the stock media. This equates to the engine not needing to work as hard to make the same, or more power. Additionally, the use of oiled cotton media means that the Dinan filters are washable/re-usable while still retaining excellent filtration and ensuring your engine runs clean for the duration. Compatible w/ Stock Air Box - G20/G22/G23/G26/G29/G42/A90 (B46/B48/B58)

• Less restrictive and better flowing than stock allowing maximum engine performance and efficiency
• 4 layers of proprietary high flow oiled cotton gauze material for exceptional filtration
• Washable and reusable for the life of the engine
• Direct replacement for stock air filter
• Quick and easy installation

Improve airflow and support engine performance with the Dinan D401-0046 High-Flow Drop-In Replacement Air Filter. Designed as a direct replacement for the factory filter, this reusable performance filter fits the stock air box on select BMW and Toyota applications, including G20, G22, G23, G26, G29, G42, and A90 models equipped with B46, B48, or B58 engines. Its less restrictive design helps reduce pressure drop compared with conventional factory paper filter media, allowing the engine to breathe more efficiently without requiring modifications to the original airbox.
The Dinan D401-0046 uses four layers of proprietary high-flow oiled cotton gauze to balance improved airflow with dependable filtration. By helping the engine move air with less resistance, the filter can support responsive performance and engine efficiency while helping keep harmful contaminants out of the intake system. The oiled cotton construction is washable and reusable, providing a long-term alternative to repeatedly replacing disposable paper filters throughout the life of the vehicle.
Installation is quick and straightforward, with the filter designed to fit directly in place of the stock air filter. No permanent vehicle modifications are required, making it a practical upgrade for daily-driven vehicles and performance-focused builds alike. The Dinan D401-0046 is compatible with select 2019-2026 BMW 3 Series, 4 Series, Z4, 2 Series, and Toyota GR Supra applications. Always confirm vehicle fitment and engine configuration before installation.

Features:

• Less restrictive and better flowing than the stock filter to support engine performance and efficiency

• Four layers of proprietary high-flow oiled cotton gauze provide effective filtration

• Washable and reusable design supports extended service life

• Direct replacement for the factory air filter in the stock air box

• Quick and easy installation without permanent modifications

• Compatible with select BMW and Toyota GR Supra applications using B46, B48, or B58 engines

Fitment:
BMW 230i Base 2022
BMW 230i Base 2023
BMW 230i Base 2024
BMW 230i Base 2025
BMW 230i Base 2026
BMW 230i xDrive Base 2023
BMW 230i xDrive Base 2024
BMW 230i xDrive Base 2025
BMW 230i xDrive Base 2026
BMW 330e Base 2021
BMW 330e Base 2022
BMW 330e Base 2023
BMW 330e Base 2024
BMW 330e xDrive Base 2021
BMW 330e xDrive Base 2022
BMW 330e xDrive Base 2023
BMW 330e xDrive Base 2024
BMW 330i Base 2019
BMW 330i Base 2020
BMW 330i Base 2021
BMW 330i Base 2022
BMW 330i Base 2023
BMW 330i Base 2024
BMW 330i Base 2025
BMW 330i Base 2026
BMW 330i xDrive Base 2019
BMW 330i xDrive Base 2020
BMW 330i xDrive Base 2021
BMW 330i xDrive Base 2022
BMW 330i xDrive Base 2023
BMW 330i xDrive Base 2024
BMW 330i xDrive Base 2025
BMW 330i xDrive Base 2026
BMW 430i Base 2021
BMW 430i Base 2022
BMW 430i Base 2023
BMW 430i Base 2024
BMW 430i Base 2025
BMW 430i Base 2026
BMW 430i Gran Coupe Base 2022
BMW 430i Gran Coupe Base 2023
BMW 430i Gran Coupe Base 2024
BMW 430i Gran Coupe Base 2025
BMW 430i Gran Coupe Base 2026
BMW 430i xDrive Base 2021
BMW 430i xDrive Base 2022
BMW 430i xDrive Base 2023
BMW 430i xDrive Base 2024
BMW 430i xDrive Base 2025
BMW 430i xDrive Base 2026
BMW 430i xDrive Gran Coupe Base 2023
BMW 430i xDrive Gran Coupe Base 2024
BMW 430i xDrive Gran Coupe Base 2025
BMW 430i xDrive Gran Coupe Base 2026
BMW M240i Base 2023
BMW M240i Base 2024
BMW M240i Base 2025
BMW M240i Base 2026
BMW M240i xDrive Base 2022
BMW M240i xDrive Base 2023
BMW M240i xDrive Base 2024
BMW M240i xDrive Base 2025
BMW M240i xDrive Base 2026
BMW M340i Base 2020
BMW M340i Base 2021
BMW M340i Base 2022
BMW M340i Base 2023
BMW M340i Base 2024
BMW M340i Base 2025
BMW M340i Base 2026
BMW M340i xDrive Base 2020
BMW M340i xDrive Base 2021
BMW M340i xDrive Base 2022
BMW M340i xDrive Base 2023
BMW M340i xDrive Base 2024
BMW M340i xDrive Base 2025
BMW M340i xDrive Base 2026
BMW M440i Base 2021
BMW M440i Base 2022
BMW M440i Base 2023
BMW M440i Base 2024
BMW M440i Base 2025
BMW M440i Base 2026
BMW M440i Gran Coupe Base 2022
BMW M440i Gran Coupe Base 2023
BMW M440i Gran Coupe Base 2024
BMW M440i Gran Coupe Base 2025
BMW M440i Gran Coupe Base 2026
BMW M440i xDrive Base 2021
BMW M440i xDrive Base 2022
BMW M440i xDrive Base 2023
BMW M440i xDrive Base 2024
BMW M440i xDrive Base 2025
BMW M440i xDrive Base 2026
BMW M440i xDrive Gran Coupe Base 2022
BMW M440i xDrive Gran Coupe Base 2023
BMW M440i xDrive Gran Coupe Base 2024
BMW M440i xDrive Gran Coupe Base 2025
BMW M440i xDrive Gran Coupe Base 2026
BMW Z4 M40i 2022
BMW Z4 M40i 2023
BMW Z4 M40i 2024
BMW Z4 M40i 2025
BMW Z4 M40i 2026
BMW Z4 sDrive M40i 2020
BMW Z4 sDrive M40i 2021
BMW Z4 sDrive30i 2019
BMW Z4 sDrive30i 2020
BMW Z4 sDrive30i 2021
BMW Z4 sDrive30i 2022
BMW Z4 sDrive30i 2023
BMW Z4 sDrive30i 2024
BMW Z4 sDrive30i 2025
BMW Z4 sDrive30i 2026
Toyota GR Supra A91 Edition 2021
Toyota GR Supra A91 Edition 2022
Toyota GR Supra Base 2020
Toyota GR Supra Base 2021
Toyota GR Supra Base 2022
Toyota GR Supra Base 2023
Toyota GR Supra Base 2024
Toyota GR Supra Base 2025
Toyota GR Supra Base 2026
Toyota GR Supra Premium 2020
Toyota GR Supra Premium 2021
Toyota GR Supra Premium 2022
Toyota GR Supra Premium 2023
Toyota GR Supra Premium 2024
Toyota GR Supra Premium 2025
Toyota GR Supra Premium 2026