NEXT PHASE FILTERS Carbon Cabin Air Filter for 2021–2025 VW ID.4 & 2022–2025 Audi Q4 e‑tron — Activated Carbon, OE Fit

NEXT PHASE FILTERS Carbon Cabin Air Filter replaces OE 1EA819669 to give 2021–2025 Volkswagen ID.4, 2022–2025 Audi Q4 e-tron and 2025 VW ID Buzz cabins a reliable, factory-fit filtration upgrade.

This carbon cabin filter is engineered to match the original equipment footprint and fitment while adding an active-adsorption layer to help control odors and capture airborne particulates inside the vehicle cabin. Built to manufacturer tolerances and made in the USA, the Next Phase NP81966 is a direct replacement for OE part 1EA819669 and is intended to be an affordable maintenance item for EV owners who prioritize cabin comfort and HVAC longevity.

How does this filter improve cabin air quality?

The filter uses a multi-layer media construction with an activated carbon layer to adsorb odor-causing gases and a dense particulate layer to trap dust, pollen, and other airborne debris. It reduces what circulates through the HVAC system so fewer particles reach vents and interior surfaces.

• Activated carbon layer reduces common vehicle odors and VOCs.
• High-efficiency media captures pollen, dust, and soot-sized particles.
• Factory-matched shape ensures full coverage and proper airflow.

Will this fit my Volkswagen ID.4, Audi Q4 e-tron, or ID Buzz?

This cabin filter is manufactured to replace OE reference 1EA819669 and is specifically compatible with 2021–2025 Volkswagen ID.4, 2022–2025 Audi Q4 e-tron models, and the 2025 VW ID Buzz. Each unit is shaped and sized to install without modification in the OEM filter housing.

• Direct replacement for OE 1EA819669—no trimming required.
• Designed to fit the stock filter slot and latch mechanisms.
• Clear part number reference to confirm vehicle compatibility before purchase.

How does replacing the cabin filter help my vehicle’s HVAC system?

Regular replacement prevents buildup of grime and particulates within the ventilation path, which can restrict airflow and force the blower motor to work harder. Using a quality replacement like the Next Phase unit helps maintain consistent airflow and can reduce the need for premature HVAC cleaning or repairs.

• Protects HVAC components from dust and debris accumulation.
• Maintains designed airflow and blower efficiency over time.
• Replacement intervals are simple and match your vehicle’s routine maintenance schedule.

What makes this filter a value compared with OEM options?

Next Phase balances material quality and cost to provide a dependable filter made in the USA at a competitive price. Manufactured to meet original-fit tolerances, the NP81966 delivers comparable performance and fit without the premium markup often applied to branded OEM parts.

• Made in the USA, sourced and assembled to high quality standards.
• Cost-effective alternative to dealer-priced cabin filters.
• Durable construction for reliable service life between changes.

Who is this for: This replacement is aimed at owners of compatible Volkswagen and Audi electric models who want a true-fit, economical cabin filter that includes activated carbon for odor control. It's a practical purchase for drivers who perform routine maintenance, DIY technicians replacing cabin filters at home, and maintenance shops seeking a dependable, OEM-alike part made in the USA for EV cabins.