{"product_id":"philtop-ca4309-cf11776-engine-cabin-air-filter-set","title":"PHILTOP CA4309+CF11776 Engine \u0026 Cabin Air Filter Set","description":"\u003cp\u003e\u003cstrong\u003ePHILTOP CA4309+CF11776 is a matched engine and cabin air filter kit designed to fit select Nissan and INFINITI models, combining intake protection and interior air cleaning in one convenient purchase.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis two-piece kit includes an engine air filter (CA4309) and a cabin air filter (CF11776) tailored for Nissan Pathfinder (2013–2020 3.5L), Nissan Murano (2015–2024 3.5L), INFINITI QX60 (2014–2020 3.5L), Nissan Maxima (2016–2023), Nissan Altima (2013–2018 3.5L), and INFINITI JX35 (2013). PHILTOP engineered the pair to simplify maintenance: one order supplies both filters that work together to help protect your engine and improve cabin air quality. The set saves time and ensures you replace both elements on the same service interval for balanced performance.\u003c\/p\u003e\n\n\u003ch3\u003eHow does replacing both filters at once benefit my vehicle?\u003c\/h3\u003e\n\u003cp\u003eSwapping the engine and cabin filters together helps maintain consistent airflow management for the vehicle and keeps contaminants out of both the intake and passenger compartment. Coordinated replacement avoids mismatched service intervals that can compromise engine efficiency or cabin comfort.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngine filter traps road dust and debris to protect engine components.\u003c\/li\u003e\n  \u003cli\u003eCabin filter captures pollen, dust, and odors to improve air quality.\u003c\/li\u003e\n  \u003cli\u003eReplacing both reduces the chance one worn filter undermines the other's performance.\u003c\/li\u003e\n  \u003cli\u003eOne maintenance interval simplifies record-keeping and saves time.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill these filters fit my Nissan or INFINITI model?\u003c\/h3\u003e\n\u003cp\u003eThe set is made to directly replace the specified OEM part numbers for the listed model years and engines. Fitment is model- and year-specific; check your vehicle’s year and engine size to confirm compatibility before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits Nissan Pathfinder 2013–2020 3.5L and Murano 2015–2024 3.5L.\u003c\/li\u003e\n  \u003cli\u003eCompatible with INFINITI QX60 2014–2020 3.5L and JX35 2013.\u003c\/li\u003e\n  \u003cli\u003eAlso fits Nissan Maxima 2016–2023 and Altima 2013–2018 3.5L.\u003c\/li\u003e\n  \u003cli\u003eEngine part CA4309 and cabin part CF11776 match OEM sizing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow difficult is installation for a DIYer?\u003c\/h3\u003e\n\u003cp\u003eBoth filters are designed for direct OE fit and straightforward installation. The cabin filter is usually accessed behind the glovebox and can often be replaced without tools; the engine air filter sits in the engine bay housing for quick swap-out.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCabin filter typically swaps in minutes, often tool-free.\u003c\/li\u003e\n  \u003cli\u003eEngine filter fits into the factory airbox under the hood.\u003c\/li\u003e\n  \u003cli\u003eClear instructions included to guide each step.\u003c\/li\u003e\n  \u003cli\u003eIdeal for home maintenance or quick shop service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I replace these filters?\u003c\/h3\u003e\n\u003cp\u003ePHILTOP recommends replacing both the cabin and engine air filters together every 12 months or 12,000 miles to maintain performance and air quality. Driving conditions such as heavy dust, pollen, or urban pollution may justify more frequent changes.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard recommendation: every 12 months or 12,000 miles.\u003c\/li\u003e\n  \u003cli\u003eReplace sooner when driving in dusty or high-pollen areas.\u003c\/li\u003e\n  \u003cli\u003eFollow owner’s manual for vehicle-specific maintenance intervals.\u003c\/li\u003e\n  \u003cli\u003eKeeping records of combined replacements simplifies future service.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The PHILTOP CA4309+CF11776 kit is aimed at owners of the listed Nissan and INFINITI models who want a simple, reliable way to maintain engine protection and cabin air quality. It's also a smart choice for DIY enthusiasts who value a direct-fit, two-filter solution packed for convenience, and for fleet managers who prefer uniform maintenance intervals across vehicles. If you want both the intake and passenger cabin protected with one purchase, this paired kit delivers an easy, practical maintenance upgrade.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do these filters match original equipment sizes?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the CA4309 engine and CF11776 cabin filters are direct-fit replacements for the listed Nissan and INFINITI models.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I install both filters myself?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — the cabin filter usually swaps without tools behind the glovebox and the engine filter installs in the airbox under the hood.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"PHILTOP","offers":[{"title":"Default Title","offer_id":48087217111198,"sku":"B0GH84Z3JZ","price":40.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/philtop-front-packaging_f8df28dd-c793-4381-8a31-a0e8f625ac24.jpg?v=1785919277","url":"https:\/\/northtrailauto.ca\/products\/philtop-ca4309-cf11776-engine-cabin-air-filter-set","provider":"North Trail Auto","version":"1.0","type":"link"}