{"product_id":"4194621-arm-cylinder-wear-ring-fits-hitachi-ex270-zx280","title":"4194621 Arm Cylinder Wear Ring Fits Hitachi EX270-ZX280","description":"\u003ch3\u003eOne New Aftermarket Replacement Arm Cylinder Wear Ring for Hitachi Excavators EX270 \/ ZX280 Series\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement arm cylinder wear ring (also referred to as a wearing ring or piston wear ring) is a hydraulic cylinder rebuild and repair component for Hitachi excavators. Wear rings guide and support the piston within the hydraulic cylinder bore, preventing metal-to-metal contact, reducing side loads, and maintaining alignment for smooth, efficient arm cylinder operation. This part is used during cylinder rebuilds and overhauls on Hitachi EX270 and ZX280 series excavators.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eHitachi EX Series:\u003c\/strong\u003e EX270, EX270LC\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHitachi ZX Series:\u003c\/strong\u003e ZX280\u003c\/p\u003e\u003cp\u003eNote: Verify your specific cylinder part number and serial number range prior to ordering. Multiple arm cylinder variants exist across the EX270 and ZX280 model range.\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e4194621\u003c\/p\u003e\u003cp\u003eNew aftermarket replacement part - not remanufactured, not used.\u003c\/p\u003e","brand":"Reliable Aftermarket Parts, Inc® -OD","offers":[{"title":"Default Title","offer_id":39870419763283,"sku":"EXB10-0008","price":40.23,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/RAP_ComingSoon_Tractor_3863d4c4-6e0e-497b-8ace-2b297f298255.jpg?v=1757907408","url":"https:\/\/www.reliableaftermarketparts.com\/products\/4194621-arm-cylinder-wear-ring-fits-hitachi-ex270-zx280","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}