ATP Parts RA-18 Cabin Air Filter

Activated Carbon Cabin Air Filtration

ATP Parts Premium Line RA-18 is a cabin air filter built for vehicles that need cleaner air entering the passenger compartment. Its carbon-activated media helps capture airborne particles and reduce outside odors before they reach the vents, making it a practical upgrade for Nissan Armada, Nissan TITAN, and INFINITI QX56 applications.

The ATP Premium Line focuses on filtration performance for everyday driving, including traffic exhaust, diesel fumes, and other common outside contaminants. If you are replacing an OE pollen filter on a 2005-2015 Nissan Armada or a 2004-2014 Nissan TITAN, RA-18 is a direct-fit cabin air filter option for those applications.

Key Features

• Activated carbon media helps absorb unwanted odors from incoming air
• Static charge helps trap fine particles before they enter the cabin
• Premium Line cabin air filter for HVAC filtration service
• Direct replacement for OE pollen filter applications
• Fits Nissan Armada, Nissan TITAN, INFINITI QX56, and Pathfinder Armada applications listed below
• Part number RA-18 for catalog and service reference

Product Details

ATP Parts RA-18 is a Premium Line cabin air filter designed for HVAC filter service on select Nissan and INFINITI vehicles. The carbon-activated filter media is intended to reduce odors while the charged filter surface helps capture particles carried through the ventilation system. This makes it a strong choice for drivers looking for a cabin air filter for 2005-2015 Nissan Armada, 2004-2014 Nissan TITAN, or 2004-2010 INFINITI QX56 models. The RA-18 part number is also useful when cross-checking service records or ordering by catalog reference.

This part cross-references 999M1VP005 and CAF2091 for the same application.

What It Helps Address

• Dust and airborne debris entering the HVAC system
• Odors from diesel exhaust and outside traffic
• Reduced cabin air freshness during ventilation use
• Replacement of a worn or restricted OE pollen filter
• Routine cabin air filter service on Nissan Armada, Nissan TITAN, and INFINITI QX56 vehicles

Installation Notes

Install RA-18 according to the vehicle’s cabin air filter service procedure and verify the HVAC filter location before replacement. Check the filter housing for debris and clean the area as needed before installing the new filter. For fitment, use the exact application listing: Fits 2005-2015 Nissan Armada, N/A; Fits 2004-2014 Nissan TITAN, N/A; Fits 2004-2010 INFINITI QX56, N/A; Fits 2004 Nissan Pathfinder Armada, N/A.

Quality Assurance

ATP Parts Premium Line is positioned as a higher-grade cabin filtration option within the ATP catalog, using activated carbon media and charged filtration material to support cleaner in-cabin air. Part number RA-18 is cataloged for the listed vehicle applications and OE pollen filter upgrade service.