KAX CA11259 CF11811 Engine & Cabin Air Filter for Mazda

KAX CA11259 CF11811 is a two-piece engine and cabin air filter kit engineered to restore engine breathing and reduce odors in Mazda CX-5 (2013–2025) and compatible Mazda models.

This combined replacement set includes a vehicle-specific engine air filter and a charcoal-equipped cabin air filter designed for Mazda CX-5 2.5L applications (also compatible with select Mazda 3 and Mazda 6 years and engines). The kit delivers filtration upgrades in one purchase so you can refresh intake protection and cabin air quality in a single maintenance session, eliminating the need to hunt for separate parts.

What exactly is included and why buy the pair together?

The kit contains one engine air filter and one cabin air filter matched to fit the listed Mazda model years. Buying both together saves time and ensures coordinated maintenance—replacing both filters helps avoid staggered service intervals and potential performance or comfort issues.

• 1 engine air filter sized for Mazda CX-5 2.5L (fits listed years)
• 1 cabin air filter with coconut shell-activated charcoal layer
• Single-purchase convenience—no separate ordering
• Estimated 5-minute install per filter for most owners with basic tools

How does the cabin filter improve in‑car air quality?

The cabin filter uses multi-layer media plus coconut shell-activated charcoal to trap particulates and help neutralize common odors. It does not diagnose or prevent health conditions, but it reduces dust, pollen and many odor-causing molecules, making the passenger compartment noticeably fresher.

• Activated charcoal layer absorbs many odor molecules
• Multi-layer media captures pollen and road dust
• Designed to fit OEM cabin filter housing for correct airflow

Will the engine air filter affect engine performance?

An appropriately sized, high-quality engine air filter helps maintain proper airflow to the engine by trapping dirt and debris before they enter the intake. Regular replacement protects the throttle and sensors from buildup that can affect efficiency and responsiveness over time.

• Premium filtration media prevents particulate ingress
• Correct fit ensures proper sealing and airflow path
• Routine replacement protects long-term engine components

How often should I replace these filters?

KAX recommends replacing both the engine and cabin filters together every 12 months or every 12,000 miles, whichever comes first. Replacement frequency depends on driving conditions: dusty roads, heavy traffic and urban pollution warrant more frequent changes.

• Standard recommendation: 12 months / 12,000 miles
• Increase frequency if driving in dusty or polluted areas
• Changing both filters at once simplifies scheduled maintenance

Who this kit is for: The KAX CA11259 CF11811 set is intended for Mazda CX-5 owners (2013–2025) seeking a convenient, matched pair of replacement filters that refresh both engine intake protection and cabin air comfort. It’s also useful for owners of compatible Mazda 3 (2014–2018) and Mazda 6 (2014–2021) 2.5L models who prefer a charcoal cabin filter and want to streamline routine upkeep. Choose this kit if you want an easy, time-saving maintenance option that replaces both filters at once and is sized to fit the specified Mazda model years.