{"product_id":"castair-8d","title":"Castair 8D","description":"\u003ch2\u003eCastair Air Filter Element — Part# 8D (Fits A-Series and PK-Series Pumps)\u003c\/h2\u003e\n\n\u003cp\u003eThe Castair 8D is the replacement air filter element for Castair A-series and PK-series compressor pumps. If your compressor is pulling in dirty air — dust, grit, shop debris — that contaminant goes through your valves, rings, and cylinders. A fresh filter element is not a luxury item. It is one of the cheapest forms of pump maintenance you can do, and it is the right thing to replace on a schedule rather than waiting until the element is visibly clogged or your pump starts running hot.\u003c\/p\u003e\n\n\u003cp\u003eThis element fits the 2140019A complete air filter assembly, which is the standard 1\/2 in inlet filter used on the A-series and PK-series Castair pumps. If you are running a DD20, PK20, PK50, PK60, or PK65 pump, this is the correct replacement element. Keep a spare on the shelf — when you are doing a pump service, replacing the filter element at the same time adds about two minutes to the job and costs next to nothing relative to what contamination damage costs.\u003c\/p\u003e\n\n\u003ch3\u003eFilter Element Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 8D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter (ID):\u003c\/strong\u003e 1-1\/8 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter (OD):\u003c\/strong\u003e 2-1\/2 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 1-7\/8 in\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInlet Size:\u003c\/strong\u003e Fits 1\/2 in inlet (complete assembly is part# 2140019A)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatible Pumps and Assemblies\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2140019A:\u003c\/strong\u003e Complete air filter assembly for 1\/2 in inlet — the 8D element fits inside this housing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDD20:\u003c\/strong\u003e Direct-drive pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePK20:\u003c\/strong\u003e PK-series pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePK50:\u003c\/strong\u003e PK-series pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePK60:\u003c\/strong\u003e PK-series pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePK65:\u003c\/strong\u003e PK-series pump\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you are not sure whether this element fits your specific pump, check the filter housing on your unit. The housing inlet size and the element dimensions (ID 1-1\/8 in, OD 2-1\/2 in, HGT 1-7\/8 in) need to match. Call us with your pump model number and we will confirm compatibility before you order.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Air Filtration Matters on Cast Iron Pumps\u003c\/h3\u003e\n\u003cp\u003eCastair pumps are cast iron, oil-lubricated, and designed for a long service life. The design investment in cast iron and oil lubrication pays off when the pump is maintained properly. Air filtration is part of that maintenance. Your compressor pump is essentially an air pump — everything in the intake air passes through the filter before it reaches the valves and cylinders. Dust and particulate contamination accelerates valve wear, scores cylinder walls, and contaminates the oil. A clogged filter restricts airflow, makes the pump work harder, runs hotter, and delivers less CFM than it should.\u003c\/p\u003e\n\n\u003cp\u003eReplacement intervals depend on your environment. A clean shop may go a full season without needing a new element. A dusty shop — grinding, woodworking, sandblasting nearby — may need element replacement every few months. The element is inexpensive enough that erring on the side of more frequent replacement is the right call.\u003c\/p\u003e\n\n\u003ch3\u003eReplacing the Element\u003c\/h3\u003e\n\u003cp\u003eThe 8D element installs in the 2140019A filter housing. The process is straightforward:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRelieve system pressure before working on the air intake — standard safety practice\u003c\/li\u003e\n\u003cli\u003eRemove the filter housing cover or cap from the pump inlet\u003c\/li\u003e\n\u003cli\u003ePull out the old element — note its orientation if the housing has a specific orientation requirement\u003c\/li\u003e\n\u003cli\u003eInspect the housing for cracks, damage, or contamination buildup — clean if needed\u003c\/li\u003e\n\u003cli\u003eInstall the new 8D element and reassemble\u003c\/li\u003e\n\u003cli\u003eConfirm the housing is secure before returning the pump to service\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKeeping Spare Elements on Hand\u003c\/h3\u003e\n\u003cp\u003eOrdering a single element is fine, but most shops doing regular maintenance order two or three at a time. The cost is low, the part is small, and having a replacement on the shelf means you do not skip the maintenance step because you have to wait for shipping. If you are servicing multiple Castair pumps on the same platform, ordering in small quantities makes sense.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Buy From Air Compressor Factory Direct?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCastair parts specialists:\u003c\/strong\u003e We stock the correct OEM elements and can confirm compatibility with your specific pump before you order\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFree technical support:\u003c\/strong\u003e Call us with your pump model number and we will make sure you are ordering the right part\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull manufacturer warranty:\u003c\/strong\u003e Genuine Castair parts, not aftermarket substitutes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast shipping:\u003c\/strong\u003e Small parts ship quickly — you should not be waiting weeks for a filter element\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull parts inventory:\u003c\/strong\u003e We carry the complete air filter assembly (2140019A) if you need the entire housing, not just the element\u003c\/li\u003e\n\u003c\/ul\u003e\n\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":53342511235285,"sku":"8D","price":14.2,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorfactorydirect.com\/products\/castair-8d","provider":"Air Compressor Factory Direct","version":"1.0","type":"link"}