{"product_id":"truck-roller-bottom-roller-rd441-21702-for-kubota-kx057-u55-kx057-4-u55-4-u48-3","title":"Truck Roller Bottom Roller RD441-21702 for Kubota KX057 U55 KX057-4 U55-4  U48-3","description":"\u003cstrong\u003eThis Truck Roller (Bottom Roller) is a high-quality aftermarket replacement part compatible with Kubota KX057, U55, KX057-4, U55-4, and U48-3 and matches OEM Part# RD441-21702.\u003c\/strong\u003e\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eThis heavy-duty bottom track roller is engineered to support the machine's weight and ensure efficient track rotation. It is manufactured to meet rigorous industry standards for long-term durability and performance in harsh environments.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eForged Steel Construction:\u003c\/strong\u003e Built to withstand heavy impact and minimize wear over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Seals:\u003c\/strong\u003e Designed to retain lubrication and protect against moisture and contaminants.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Alignment:\u003c\/strong\u003e Ensures proper tracking and reduces the risk of derailment or uneven wear.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Models:\u003c\/strong\u003e Kubota KX057, U55, KX057-4, U55-4, U48-3\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e RD441-21702\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent Type:\u003c\/strong\u003e Bottom Roller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMachine Compatibility:\u003c\/strong\u003e Excavators\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart Number(s):\u003c\/strong\u003e RD441-21702\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eQ:\u003c\/strong\u003e Is this roller compatible with the KX057-4 series? \u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is designed to fit the Kubota KX057-4 and other models listed in the specifications. \u003cstrong\u003eQ:\u003c\/strong\u003e Does this part match OEM RD441-21702? \u003cstrong\u003eA:\u003c\/strong\u003e This component is an aftermarket replacement manufactured to the same specifications as OEM part RD441-21702.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eCompatibility may vary by serial number. Verify fitment before purchase.\u003c\/em\u003e\u003c\/p\u003e","brand":"Northline Parts","offers":[{"title":"Default Title","offer_id":42820053368903,"sku":"ZZ2T03626","price":268.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0681\/7123\/5399\/files\/12_52b264ad-8ab6-403d-823d-a2c165324c61.jpg?v=1779788068","url":"https:\/\/www.northlineparts.com\/products\/truck-roller-bottom-roller-rd441-21702-for-kubota-kx057-u55-kx057-4-u55-4-u48-3","provider":"Northline Parts","version":"1.0","type":"link"}