Premium Guard HEPA Cabin Air Filter PC4579HX — Fits Ram & Wagoneer, Activated Charcoal Odor Control

PUREFLOW PC4579HX is a HEPA-grade cabin air filter by Premium Guard engineered to trap fine particles and reduce odors for a cleaner in-cabin environment in compatible Ram and Wagoneer models.

Whether you drive daily in traffic, on dusty roads, or through pollen-heavy seasons, the PUREFLOW PC4579HX offers a higher level of particulate and odor control than standard cabin filters. Built with high-efficiency HEPA media and an activated charcoal layer, this replacement filter is sized to fit a wide range of Dodge Ram and Jeep Wagoneer model years, helping maintain air quality and supporting your vehicle’s HVAC efficiency.

How does this filter improve air quality inside my truck or SUV?

The PUREFLOW PC4579HX uses HEPA-grade media designed to capture very small airborne particles, including fine dust, pollen, and other contaminants down to about 0.3 microns. An activated charcoal layer helps adsorb traffic and environmental odors, so the cabin smells fresher during and after long drives. Together, these layers reduce the amount of particulates and odors circulating through the vents.

• HEPA-grade media captures particles as small as 0.3 microns
• Activated charcoal layer reduces smoke, exhaust, and road odors
• Helps reduce particulate circulation through HVAC vents

Will this filter fit my Ram 1500 or Wagoneer model?

PUREFLOW PC4579HX is manufactured to fit a range of Ram and Wagoneer vehicles from model years listed by Premium Guard. It replaces several common OE and aftermarket part numbers, but you should verify fitment using your vehicle’s filter lookup or owner manual before purchase. Proper fit ensures the filter seals correctly and performs as intended.

• Fits Ram 1500, 2500, 3500, 4500, 5500 ranges (various engines and years)
• Compatible with Jeep Wagoneer, Wagoneer L, Grand Wagoneer and Grand Wagoneer L
• Replaces MicroGard 3705HP and TYC 800142C/800222P

Does the HEPA-grade media affect HVAC performance or airflow?

High-efficiency HEPA media is denser than standard filters, so it can create a slight increase in airflow resistance. Premium Guard designs the PC4579HX to balance filtration efficiency with acceptable airflow for vehicle HVAC systems. Most users will notice improved air cleanliness with minimal impact on fan performance, though heavy contamination or long intervals between changes can increase resistance.

• Denser HEPA media may cause minor airflow restriction
• Designed for balance between filtration and HVAC performance
• Replace regularly to avoid increased resistance from buildup

How often should I replace the PC4579HX cabin filter?

Replacement frequency depends on driving conditions: city traffic, dusty roads, or areas with heavy pollen may require more frequent changes. As a general guideline, inspect the filter at least once a year and replace it when visibly dirty or per your vehicle manufacturer’s maintenance schedule. Fresh filters help maintain ventilation efficiency and cabin comfort.

• Inspect annually or with every major service
• Replace sooner in dusty, smoky, or pollen-heavy environments
• Regular replacement preserves HVAC efficiency and air quality

Who is this for: The Premium Guard PUREFLOW PC4579HX is aimed at owners of compatible Ram and Wagoneer trucks and SUVs who want upgraded cabin filtration—especially drivers sensitive to pollen, dust, or vehicle odors and those who spend significant time on highways or in urban traffic. It’s also a practical choice for anyone seeking a straightforward replacement that improves in-cabin air cleanliness while fitting established OE and aftermarket part references.

• HIGH-EFFICIENCY HEPA-GRADE MEDIA – Designed to capture extremely fine airborne particles down to 0.3 microns for enhanced cabin air performance (may result in a minor restriction to airflow).
• HIGH-GRADE ACTIVATED CHARCOAL LAYER – Enhanced charcoal filtration helps manage strong traffic-related and environmental smells for a cleaner cabin environment.
• ADVANCED FILTRATION TECHNOLOGY. PUREFLOW’s advanced filtration provides a healthy cabin atmosphere, ensuring you're breathing clean air, while helping to maintain the performance of the car’s climate control system.
• COMPATIBLE WITH Ram 1500, 2500, 3500, 1500 Classic, 5500, 4000, 4500|Jeep Wagoneer, Wagoneer L, Grand Wagoneer, Grand Wagoneer L
• REPLACES MicroGard 3705HP|TYC 800142C, 800222P. Always check fitment using the Vehicle Filter Lookup