KAX HEPA Cabin Air Filter for Nissan Altima - CF11776 Single Pack, HEPA + Carbon, OEM Fit

KAX CF11776 is a premium HEPA cabin air filter engineered to replace the factory filter in select Nissan and INFINITI models, delivering HEPA-level particle capture and active odor reduction.

If you want cleaner air inside your vehicle without changing the HVAC system or sacrificing airflow, the KAX ProSeries HEPA cabin filter offers a direct-fit aftermarket upgrade. Built to OEM dimensions for a tool-free install, this filter adds a dual-layer carbon matrix and true HEPA media to trap fine particles and reduce interior odors while maintaining efficient airflow.

How does the KAX CF11776 filter improve in-cabin air quality?

The CF11776 uses a true HEPA-grade layer combined with a high-capacity dual-layer carbon matrix. Together they capture very fine particulate matter and actively reduce common interior odors, outperforming basic OEM cabin filters by a measurable margin.

• HEPA-compliant media filters 99.9% of 0.1–0.3μm particles (independently tested).
• Dual-layer carbon matrix adsorbs airborne odors and VOCs for fresher cabin air.
• Outperforms standard OEM filters by roughly 35% in fine particle capture.

Will upgrading to this filter affect my vehicle’s airflow or HVAC performance?

KAX designed the CF11776 to balance filtration efficiency with minimal airflow resistance. The optimized pleat geometry reduces resistance so the climate system can maintain cooling and heating performance while using less energy to push air through the filter.

• Engineered to lower airflow resistance about 15% versus denser aftermarket designs.
• Maintains efficient heating and cooling delivery to the cabin vents.
• Compatible with factory blower speeds and climate controls—no recalibration needed.

Is installation straightforward and will it fit my Nissan or INFINITI?

The CF11776 is manufactured from exact OEM dimensional specifications for a precise fit behind the glove box. KAX validated fit and function through repeated tests so most owners can complete the swap without tools in under five minutes.

• Designed for behind-glove-box filter housings in listed models.
• Exact dimensions: 11" length × 9.6" width × 0.7" height, rectangular shape.
• Boxed single-pack replacement; non-washable, single-use disposable design.

Which vehicles and situations is this filter intended for?

The CF11776 was developed for drivers of specific Nissan and INFINITI sedans and SUVs who want a higher standard of cabin filtration. It’s suited for everyday commuters, families, and anyone sensitive to dust, pollen, road soot, or mild odors from traffic and urban environments.

• Vehicle compatibility includes Nissan Altima (2013–2018), Pathfinder (2013–2020), Murano (2015–2024), Maxima (2016–2023).
• Also fits INFINITI models: QX60 (2014–2020) and JX35 (2013).
• Ideal for regions with seasonal pollen, city pollution, or frequent highway driving.

Who is this for: KAX CF11776 is for Nissan and INFINITI owners seeking a direct-fit, higher-performance cabin air filter that combines HEPA-level particle capture with active carbon odor control. If you want a simple, tool-free upgrade that keeps cabin airflow steady while improving filtration for allergy-prone passengers, commuters, and family vehicles, this filter is a practical aftermarket choice.

Specifications and care notes: Install behind the glove box; single-piece non-washable disposable filter; packaged in a protective box. Replace according to your vehicle maintenance schedule or sooner in dusty or high-pollen conditions.