KAX HEPA Cabin Air Filter for Mercedes-Benz E-Class & CLS — CF9785 Trapezoid 5-Layer with Activated Carbon

The KAX CF9785 is a HEPA-grade cabin air filter engineered to fit select Mercedes-Benz E-Class and CLS models, trapping up to 99.9% of airborne particles while protecting your vehicle’s HVAC performance.

The KAX CF9785 replacement cabin filter is manufactured with a five-layer, non-woven HEPA structure that includes activated carbon and an electrostatic long-fiber cotton layer. It’s sized and shaped to match under-hood cabin intake housings on multiple Mercedes-Benz E350, E320, E500, E550, AMG, and CLS models from the early-to-mid 2000s. This filter emphasizes fine particle capture and odor adsorption without restricting airflow, helping maintain efficient heating and cooling in the cabin’s ventilation system.

Which Mercedes-Benz models and years is this filter compatible with?

The KAX CF9785 is tailored for several E-Class and CLS variants produced in the 2003–2011 timeframe. Confirm compatibility with your VIN or owner’s manual before purchase to ensure correct fit and installation.

• Compatible models include: E350 (2006–2009), E320 (2003–2009), E500 (2003–2006), E550 (2007–2009).
• Also fits CLS models: CLS550 (2007–2011), CLS500 (2006), CLS55/63 AMG (2006–2011).
• Physical shape: trapezoid; dimensions: 12.4" x 10" x 1.3" — designed for under-hood cabin intake housings.

How does the CF9785 improve cabin air and HVAC efficiency?

This filter combines HEPA-grade media with activated carbon and an electrostatic long-fiber layer to capture fine particulates while allowing sufficient airflow. The multi-layer build increases dust-holding capacity so the HVAC system can heat and cool more effectively over time.

• Five-layer HEPA structure for fine particle capture and allergen reduction.
• Activated carbon layer absorbs odors and volatile organic compounds.
• Electrostatic long-fiber cotton increases dust-holding area without blocking air passages.
• Designed to preserve HVAC airflow and system responsiveness.

What are the replacement intervals and installation basics?

KAX recommends changing the cabin filter regularly to maintain clean air and optimal HVAC function. Replace according to time, mileage, or specific manufacturer intervals for the best results.

• Suggested replacement: every 12 months or every 12,000 miles, or per vehicle maker guidance.
• Not washable or reusable — dispose and replace with a new CF9785 when due.
• Packaged as a single boxed unit; intended for under-hood installation in compatible Mercedes-Benz housings.

Will this filter reduce odors and interior pollutants?

The activated carbon layer targets odor-causing molecules, while the HEPA-style media captures very small particles. It helps lower common cabin contaminants without claiming medical or health cures.

• Activated carbon adsorbs exhaust and interior smells.
• HEPA-grade filtration captures fine dust, pollen, and soot-sized particles.
• Designed to complement, not replace, regular vehicle maintenance and HVAC servicing.

Who is this for: The KAX CF9785 is intended for Mercedes-Benz owners who want a direct-fit, higher-efficiency cabin filter for mid-2000s E-Class and CLS vehicles. Choose this filter if you prioritize improved particulate capture, odor adsorption, and keeping your cabin ventilation performing well between scheduled maintenance intervals. Always verify fitment with your vehicle’s specifications before purchase.