{"product_id":"kax-engine-cabin-air-filter-kit-for-bmw-ca11305-cf11472-direct-fit-activated-charcoal-cabin-filter","title":"KAX Engine \u0026 Cabin Air Filter Kit for BMW CA11305 \u0026 CF11472 — Direct Fit, Activated Charcoal Cabin Filter","description":"\u003cp\u003e\u003cstrong\u003eThe KAX CA11305 \u0026amp; CF11472 kit is a two-piece replacement set containing an engine air filter and a cabin air filter engineered for select BMW models to restore engine airflow and improve in‑car air quality.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis kit pairs a high‑efficiency engine intake filter with a coconut shell activated‑charcoal cabin filter so you can handle two common maintenance items in a single purchase. Designed for direct fitment to specific BMW 2‑ and 4‑series and 3‑series variants, the set follows OEM form, fit and function guidelines to simplify installation and minimize guesswork. The combo replaces the factory parts at recommended service intervals and helps maintain consistent engine breathing while reducing odors and particulate in the passenger compartment.\u003c\/p\u003e\n\n\u003ch3\u003eWhich BMW models does this KAX filter kit fit?\u003c\/h3\u003e\n\u003cp\u003eThe kit is manufactured for compatibility with a range of BMW 2‑ and 4‑series and certain 3‑series variants. Confirm fit by comparing your vehicle’s original part numbers to the kit’s references before ordering.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible models include 320i, 320i xDrive, 328i xDrive, 328i GT xDrive, 328d xDrive\u003c\/li\u003e\n  \u003cli\u003eAlso fits 228i, 428i, 428i xDrive and 428i Gran Coupe variants\u003c\/li\u003e\n  \u003cli\u003eCheck chassis year and engine code against your OEM filter numbers\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow do these filters improve everyday driving?\u003c\/h3\u003e\n\u003cp\u003eThe engine filter preserves unrestricted airflow to the intake system and the cabin filter reduces airborne particulates and odors inside the car. Together they contribute to smoother throttle response and a fresher cabin atmosphere without altering vehicle systems.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eEngine filter traps dust and debris before entering the intake tract\u003c\/li\u003e\n  \u003cli\u003eCoconut shell activated charcoal layer neutralizes odors and VOCs\u003c\/li\u003e\n  \u003cli\u003eMulti‑layer media balances filtration efficiency with airflow\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow easy is installation and routine maintenance?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward and designed for a fast single‑person job using minimal tools. The two parts are separate replacements and install into their factory locations with existing clips and housings, allowing you to complete both in about five minutes when you know the access points.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSwap engine air filter in the intake box—no cutting or trimming required\u003c\/li\u003e\n  \u003cli\u003eReplace cabin filter behind glove box or under cowl per BMW layout\u003c\/li\u003e\n  \u003cli\u003eFollow manufacturer recommended torque and reassembly steps for secure fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhen should I replace both filters?\u003c\/h3\u003e\n\u003cp\u003eKAX recommends changing the engine and cabin filters together to maintain consistent performance and in‑car air quality. Replacing them as a pair reduces the chance one worn component undermines the other.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSuggested interval: every 12 months or 12,000 miles (whichever comes first)\u003c\/li\u003e\n  \u003cli\u003eReplace sooner in dusty or heavy‑pollution environments\u003c\/li\u003e\n  \u003cli\u003eKeep a combined spare to simplify future maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This KAX CA11305 \u0026amp; CF11472 dual‑filter set is aimed at BMW owners who prefer practical, cost‑efficient maintenance—DIY enthusiasts, independent shop mechanics, and fleet managers who want a direct‑fit replacement for select 2‑ and 4‑series and compatible 3‑series variants. If you value preserving engine breathing and reducing in‑cabling odors and particulates without aftermarket modification, this kit gives you both components in one convenient purchase for synchronized upkeep.\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 KAX filters fit my BMW 320i xDrive?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes, the kit lists compatibility with BMW 320i xDrive models; verify by matching your OEM filter numbers before purchase.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How often should I replace both filters?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: KAX recommends replacing both every 12 months or 12,000 miles, sooner in dusty or polluted conditions.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KAX","offers":[{"title":"Default Title","offer_id":48086506832030,"sku":"B0GJCYKGJ3","price":43.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/kax-front-packaging-bmw-filters.jpg?v=1785899872","url":"https:\/\/northtrailauto.ca\/products\/kax-engine-cabin-air-filter-kit-for-bmw-ca11305-cf11472-direct-fit-activated-charcoal-cabin-filter","provider":"North Trail Auto","version":"1.0","type":"link"}