{"product_id":"castair-1-2-inlet-12-cfm-4-0o-d-x3-0o-a-ht-complete-air-filter-assembly-and-element-2140019a","title":"Castair 1\/2\" Inlet 12 CFM 4.0\"O.D.x3.0\"O.A.Ht. Complete Air Filter Assembly and Element 2140019A","description":"\u003ch2\u003eCastair Complete Air Filter Assembly and Element — 1\/2\" NPT Inlet, 12 CFM, Part 2140019A\u003c\/h2\u003e\n\u003cp\u003eThis is the complete intake air filter assembly for Castair air compressors with a 1\/2-inch NPT inlet port. It ships as a complete unit — housing and filter element included — so you are not tracking down separate parts when you need to service the intake. The 12 CFM flow rating and compact 4.0\" OD x 3.0\" overall height make this a direct-fit replacement for smaller Castair compressor models running 1\/2\" inlet connections.\u003c\/p\u003e\n\u003cp\u003eIntake filtration is not a maintenance item to skip. A clogged or missing inlet filter starves the pump, increases cylinder wear from debris ingestion, and drives up operating temperatures. Replacing this assembly on schedule — or immediately if the existing filter is torn, oil-soaked, or collapsed — is straightforward preventive maintenance that protects a much more expensive pump.\u003c\/p\u003e\n\u003ch3\u003eAssembly Details\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 2140019A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Connection:\u003c\/strong\u003e 1\/2\" NPT (threaded)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rating:\u003c\/strong\u003e 12 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4.0\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 3.0\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContents:\u003c\/strong\u003e Complete assembly — housing and filter element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy the Inlet Filter Matters\u003c\/h3\u003e\n\u003cp\u003eThe intake air filter is the first line of defense for your compressor pump. Every cubic foot of air that enters the cylinder carries ambient dust, debris, and moisture. The filter catches particulates before they reach the piston rings and valve seats — components that wear fast when abrasive material gets past them.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects piston rings and cylinder walls:\u003c\/strong\u003e Fine airborne particles act as abrasive between sliding surfaces inside the pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtects valve seats:\u003c\/strong\u003e Grit on intake valves prevents complete seating and causes blow-by, reducing efficiency and raising heat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintains airflow:\u003c\/strong\u003e A clean filter at the correct CFM rating keeps the pump breathing at its designed capacity. A clogged filter restricts intake and the pump works harder for less output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces moisture carry-over:\u003c\/strong\u003e Filter media helps capture some ambient humidity before it enters the compression chamber\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInlet Size — Matching to Your Compressor\u003c\/h3\u003e\n\u003cp\u003eThe 1\/2\" NPT inlet is a common port size on smaller Castair compressor pumps. Before ordering, confirm your pump's intake port size. Castair also offers a 3\/4\" NPT version (part 2140020A) for compressors with larger inlet ports. Do not use an undersized filter housing on a larger port — the restriction reduces airflow and reduces pump output.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/2\" NPT (this part, 2140019A):\u003c\/strong\u003e Fits smaller Castair pump models with 1\/2\" intake ports\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e3\/4\" NPT (part 2140020A):\u003c\/strong\u003e Fits larger Castair pump models with 3\/4\" intake ports\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFilter housing (complete assembly)\u003c\/li\u003e\n\u003cli\u003eFilter element (installed, ready for use)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to Replace\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRegular maintenance intervals:\u003c\/strong\u003e Inspect filter element every 3-6 months depending on shop dust levels. Replace annually in average conditions, more frequently in dusty environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen the element is torn or damaged:\u003c\/strong\u003e A torn element is not filtering. Replace immediately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen the element is oil-soaked:\u003c\/strong\u003e Oil on the intake filter element usually indicates a worn pump with blow-by — address the pump issue and replace the filter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter a compressor overhaul:\u003c\/strong\u003e Always install a fresh filter when rebuilding or servicing a pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 2140019A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Cast Air (Castair)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Port:\u003c\/strong\u003e 1\/2\" NPT\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlow Rating:\u003c\/strong\u003e 12 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 4.0\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Height:\u003c\/strong\u003e 3.0\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Complete assembly with element\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Manufacturer product page data was not available at time of writing. Specifications are derived from the product name and part number. Contact us to verify fit for your specific Castair compressor model before ordering.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cp\u003eWe have specialized in air compressor parts and equipment since 2016. Castair replacement parts are a regular part of our inventory. If you are not sure whether 2140019A or 2140020A is the correct filter for your compressor, call us — we can look up your model and confirm the right part before you order.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree shipping\u003c\/strong\u003e on qualifying orders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree tech support:\u003c\/strong\u003e Call 866-217-0063 to confirm the right part for your compressor\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFull manufacturer warranty\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHonest guidance:\u003c\/strong\u003e We stock both filter sizes and will point you to the correct one\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCall 866-217-0063 for quick answers and help!\u003c\/strong\u003e\u003c\/p\u003e","brand":"Cast Air","offers":[{"title":"Default Title","offer_id":53342502093013,"sku":"2140019A","price":38.34,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0622\/8466\/0949\/files\/360_F_473254957_bxG9yf4ly7OBO5I0O5KABlN930GwaMQz_e66bad1f-7d82-4e1f-bc95-d70e5c0cf1c9.jpg?v=1772652462","url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-1-2-inlet-12-cfm-4-0o-d-x3-0o-a-ht-complete-air-filter-assembly-and-element-2140019a","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}