Mann Filter cabin air filter CU 30 004 — particulate replacement with multi-layer media, reduces dust and HVAC noise

The MANN-FILTER CU 30 004 is a vehicle-specific particulate cabin air filter that captures dust, pollen and debris to improve in-cabin air quality and reduce HVAC noise.

Engineered to meet original-equipment standards, the CU 30 004 installs in the ventilation intake to help prevent contaminants from entering the passenger compartment. Its thicker, multi-layer filter media traps small particles while maintaining airflow for heating, ventilation and air conditioning systems. Manufactured by MANN-FILTER (MANN+HUMMEL), this part is intended for European applications and fits specific vehicle models—check fitment before purchase.

How does the CU 30 004 improve everyday cabin comfort?

The filter’s denser, multi-fiber layers remove fine dust and pollen that otherwise circulate through vents. With particulates held in the media rather than blowing into the cabin, occupants experience fewer airborne irritants and a generally cleaner interior climate. The construction also dampens minor airflow noise from the HVAC system.

• Multi-layer particle media captures fine dust and pollen
• Reduces visible dust accumulation on dashboard and vents
• Helps lower fan noise by smoothing airflow through the system
• Designed to maintain proper ventilation performance

Will this filter fit my car and how do I confirm compatibility?

The CU 30 004 is a vehicle-specific part, so fitment depends on make, model and model year. Use the vehicle lookup on the seller’s site or consult your vehicle’s parts guide for confirmation. If you’re unsure, provide VIN information to the retailer or installer to verify the correct cabin filter.

• Check electronic fitment tools or parts catalogues
• Compare part number CU 30 004 with previous filter labels
• Provide VIN to dealer or parts supplier for precise matching

How is the CU 30 004 installed and maintained?

Installation is typically straightforward: access the filter housing behind the glovebox or under the dash, remove the old element and insert the new filter in the correct orientation. No special tools are usually required, and many drivers can replace it themselves. Inspect the filter at regular intervals and swap it according to the vehicle manufacturer’s service schedule or more often in dusty environments.

• Access housing per vehicle manual (glovebox or under-dash)
• Ensure correct airflow direction when installing
• Replace according to vehicle service intervals or sooner in heavy pollution

What performance can I expect compared to basic aftermarket filters?

MANN-FILTER supplies OE-quality parts with filtration media designed for reliable particle retention and long-term performance. Compared with very thin or generic substitutes, the CU 30 004 offers deeper media depth and more fiber layers for improved dust-holding capacity. That tends to translate into steadier airflow, longer service life and fewer cabin contaminants over time.

• OE-grade manufacturing and consistent quality control
• Deeper media for higher dust-holding capacity
• Stable airflow characteristics through the service interval

Who is this for: Drivers who want a dependable, OE-quality particulate cabin filter for European vehicle applications. It’s suited to daily commuters, families and anyone looking to reduce interior dust, pollen and debris without changing HVAC performance. Choose the CU 30 004 when you need a direct-fit, durable particulate filter from a recognized automotive supplier.