{"product_id":"2378378-ring-backup-fits-caterpillar-models","title":"2378378 Ring Backup Fits Caterpillar Models","description":"\u003ch3\u003eOne New Aftermarket Replacement Backup Ring for Caterpillar (Cat) Mini Hydraulic Excavators\u003c\/h3\u003e\u003cp\u003eThis aftermarket replacement backup ring replaces Caterpillar (Cat) OEM part number 2378378. Backup rings are used in hydraulic cylinder assemblies to support and protect primary O-ring seals against extrusion under pressure, helping maintain seal integrity and extend the service life of hydraulic components on Caterpillar mini excavators.\u003c\/p\u003e\u003ch4\u003eCompatible Models\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eCaterpillar Mini Hydraulic Excavators:\u003c\/strong\u003e 303C CR, 303.5C, 303.5D, 303.5E, 304D CR, 304E\u003c\/p\u003e\u003ch4\u003eReplaces Part Number(s):\u003c\/h4\u003e\u003cp\u003e2378378\u003c\/p\u003e\u003ch4\u003eAftermarket Interchange Numbers\u003c\/h4\u003e\u003cp\u003eCA2378378, 237-8378\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":42451780665427,"sku":"2378378","price":38.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0079\/4060\/3955\/files\/RAP_ComingSoon_Tractor_ece1f66c-9b7a-4f2e-a7ef-bcc1191132c5.jpg?v=1757728443","url":"https:\/\/www.reliableaftermarketparts.com\/en-au\/products\/2378378-ring-backup-fits-caterpillar-models","provider":"Reliable Aftermarket Parts, Inc®","version":"1.0","type":"link"}