{"title":"Cat 259B3 CTL Parts","description":"","products":[{"product_id":"cat-259b3-drive-sprocket-10-tooth-12-bolt-hole-ctl-part","title":"CAT 259B3 Drive Sprocket – 10 Tooth 12 Bolt Hole CTL Part 304-1870","description":"\u003ch3\u003eDrive Sprocket for Caterpillar® 259B3 Compact Track Loaders\u003c\/h3\u003e\n\n\u003cp\u003e\nThis replacement drive sprocket is manufactured for compatible Caterpillar® 259B3 compact track loader undercarriage systems. Designed as a replacement for OEM reference \u003cstrong\u003e304-1870\u003c\/strong\u003e, the sprocket helps deliver efficient power transfer through the undercarriage while maintaining reliable rubber track engagement during operation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDrive sprockets are a key wear component within compact track loader undercarriage systems and are commonly replaced when fitting new rubber tracks to help support smoother operation and extend overall undercarriage service life.\n\u003c\/p\u003e\n\n\u003ch3\u003eReplacement Undercarriage Drive Sprocket\u003c\/h3\u003e\n\n\u003cp\u003e\nOEM reference \u003cstrong\u003e304-1870\u003c\/strong\u003e is commonly associated with this style of Caterpillar® compact track loader sprocket assembly. Compatibility should always be verified using machine model information, serial range and existing OEM references before ordering replacement undercarriage components.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eReplacement drive sprocket assembly\u003c\/li\u003e\n  \u003cli\u003eSuitable for Caterpillar® 259B3 compact track loaders\u003c\/li\u003e\n  \u003cli\u003eDesigned as a replacement for OEM 304-1870\u003c\/li\u003e\n  \u003cli\u003eSupports dependable rubber track engagement\u003c\/li\u003e\n  \u003cli\u003eManufactured for demanding operating environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHeavy-Duty Compact Track Loader Component\u003c\/h3\u003e\n\n\u003cp\u003e\nDrive sprockets help transfer machine power through the rubber track undercarriage system while supporting traction and consistent track movement across abrasive, uneven and high-load working conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nManufactured using durable undercarriage-grade materials, this replacement sprocket is designed for dependable performance across construction, demolition, landscaping, agricultural and groundwork applications.\n\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Product Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM reference: 304-1870\u003c\/li\u003e\n  \u003cli\u003eReplacement compact track loader drive sprocket\u003c\/li\u003e\n  \u003cli\u003eDesigned for Caterpillar® 259B3 applications\u003c\/li\u003e\n  \u003cli\u003eSuitable for rubber track undercarriage systems\u003c\/li\u003e\n  \u003cli\u003eCommercial USA shipping available on qualifying orders\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IPXGLOBAL","offers":[{"title":"Default Title","offer_id":53879271752007,"sku":"SP-Q010C023D","price":191.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/1404\/0647\/files\/SP-Q010C023D.png?v=1778598745"},{"product_id":"cat-259b3-rear-idler-assembly-ctl-undercarriage-part","title":"CAT 259B3 Rear Idler Assembly – CTL Undercarriage Part 304-1894","description":"\u003ch3\u003eSingle Flange Rear Idler Wheel for Caterpillar® 259B3\u003c\/h3\u003e\n\n\u003cp\u003e\nThis replacement single flange rear idler wheel is designed for compatible Caterpillar® 259B3 compact track loader undercarriage systems. Mounted beneath the drive sprocket within the rear section of the undercarriage assembly, the idler helps support rubber track alignment and maintain smoother machine operation across demanding site conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nOEM reference \u003cstrong\u003e304-1894\u003c\/strong\u003e is commonly associated with this style of Caterpillar® rear idler assembly. Compatibility should always be confirmed using machine model information, serial range and existing OEM references before ordering replacement undercarriage components.\n\u003c\/p\u003e\n\n\u003ch3\u003eReplacement Rear Undercarriage Idler\u003c\/h3\u003e\n\n\u003cp\u003e\nThis version is the \u003cstrong\u003esingle flange\u003c\/strong\u003e rear idler configuration used on selected Caterpillar® compact track loader systems. Designed for installation below the sprocket assembly, the idler helps maintain proper rubber track positioning during machine operation in abrasive and high-load environments.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eReplacement single flange rear idler wheel\u003c\/li\u003e\n  \u003cli\u003eSuitable for Caterpillar® 259B3 compact track loaders\u003c\/li\u003e\n  \u003cli\u003eDesigned for rear undercarriage fitment below the sprocket\u003c\/li\u003e\n  \u003cli\u003eDirect replacement undercarriage component\u003c\/li\u003e\n  \u003cli\u003eManufactured for demanding machine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHeavy-Duty Compact Track Loader Component\u003c\/h3\u003e\n\n\u003cp\u003e\nRear idlers are an important part of compact track loader undercarriage systems and help maintain stable rubber track movement while supporting smoother machine travel across uneven and abrasive operating conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nProduced using durable undercarriage-grade materials and sealing systems, this rear idler assembly is designed for dependable operation across construction, demolition, landscaping, agricultural and groundwork applications.\n\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Product Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM reference: 304-1894\u003c\/li\u003e\n  \u003cli\u003eSingle flange rear idler wheel assembly\u003c\/li\u003e\n  \u003cli\u003eReplacement compact track loader undercarriage component\u003c\/li\u003e\n  \u003cli\u003eManufactured for Caterpillar® 259B3 applications\u003c\/li\u003e\n  \u003cli\u003eCommercial USA shipping available on qualifying orders\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IPXGLOBAL","offers":[{"title":"Default Title","offer_id":53879273488711,"sku":"ID-Y003N151-R","price":638.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/1404\/0647\/files\/ID-Y003N151-R.png?v=1778598540"},{"product_id":"cat-259b3-front-idler-assembly-ctl-idler-wheel","title":"CAT 259B3 Front Idler Assembly – CTL Idler Wheel 304-1878","description":"\u003ch3\u003eDual Flange Front Idler Wheel for Caterpillar® 259B3\u003c\/h3\u003e\n\n\u003cp\u003e\nThis replacement dual flange front idler wheel is manufactured for compatible Caterpillar® 259B3 compact track loader undercarriage systems. Fitted at the front section of the track frame assembly, the idler helps guide the rubber track and support smoother machine operation across demanding site conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nCommon OEM references associated with this style of Caterpillar® front idler include \u003cstrong\u003e304-1878\u003c\/strong\u003e. Compatibility should always be confirmed against machine serial information, flange configuration and existing OEM references before ordering replacement undercarriage parts.\n\u003c\/p\u003e\n\n\u003ch3\u003eReplacement Dual Flange Front Idler Assembly\u003c\/h3\u003e\n\n\u003cp\u003e\nThis unit is the \u003cstrong\u003edual flange\u003c\/strong\u003e front idler configuration used on selected Caterpillar® compact track loader undercarriage systems. Certain machine setups may instead use a triple flange idler arrangement, therefore the existing flange style should always be verified before purchase.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eReplacement dual flange front idler wheel\u003c\/li\u003e\n  \u003cli\u003eSuitable for Caterpillar® 259B3 compact track loaders\u003c\/li\u003e\n  \u003cli\u003eSupports track alignment and guidance\u003c\/li\u003e\n  \u003cli\u003eDirect replacement undercarriage component\u003c\/li\u003e\n  \u003cli\u003eManufactured for demanding machine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eUndercarriage Component Information\u003c\/h3\u003e\n\n\u003cp\u003e\nFront idlers form an important part of compact track loader undercarriage systems by helping maintain track positioning and stable travel during operation across abrasive and uneven working environments.\n\u003c\/p\u003e\n\n\u003cp\u003e\nCompatibility should always be checked using machine model information, serial range, flange design and OEM part references prior to ordering.\n\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Product Details\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM reference: 304-1878\u003c\/li\u003e\n  \u003cli\u003eDual flange front idler configuration\u003c\/li\u003e\n  \u003cli\u003eReplacement compact track loader undercarriage component\u003c\/li\u003e\n  \u003cli\u003eManufactured for Caterpillar® 259B3 applications\u003c\/li\u003e\n  \u003cli\u003eCommercial USA shipping available on qualifying orders\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IPXGLOBAL","offers":[{"title":"Default Title","offer_id":53879277289799,"sku":"ID-Y004S150-F","price":560.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/1404\/0647\/files\/ChatGPT_Image_May_12_2026_04_04_26_PM.png?v=1778598292"},{"product_id":"cat-259b3-tri-bottom-track-roller-m20-ctl-part","title":"CAT 259B3 Tri Bottom Track Roller – M20 CTL Part 304-1890","description":"\u003ch3\u003e536-3549 Triple Flange Bottom Roller for Caterpillar® 259B3\u003c\/h3\u003e\n\n\u003cp\u003e\nThis triple flange bottom roller is manufactured for compatible Caterpillar® 259B3 compact track loader undercarriage systems and is designed as a direct replacement component for dependable operation in demanding site conditions. Supplied fully assembled, the roller is ready for installation into compatible track frame assemblies.\n\u003c\/p\u003e\n\n\u003cp\u003e\nOEM references commonly linked with this style of Caterpillar® bottom roller include \u003cstrong\u003e304-1890\u003c\/strong\u003e, \u003cstrong\u003e389-7624\u003c\/strong\u003e and \u003cstrong\u003e536-3549\u003c\/strong\u003e. Compatibility should always be confirmed using the machine model, serial range and existing OEM reference before purchase.\n\u003c\/p\u003e\n\n\u003ch3\u003eCompatible with Caterpillar® 259B3 Undercarriage Systems\u003c\/h3\u003e\n\n\u003cp\u003e\nThe Caterpillar® 259B3 undercarriage assembly uses multiple bottom rollers to support smooth track movement and maintain stable machine operation across varying working environments. This triple flange roller is produced for compatible compact track loader applications requiring a replacement undercarriage component.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eTriple flange bottom roller assembly\u003c\/li\u003e\n  \u003cli\u003eSuitable for Caterpillar® 259B3 models\u003c\/li\u003e\n  \u003cli\u003eDirect replacement undercarriage component\u003c\/li\u003e\n  \u003cli\u003eSupplied as a complete assembled unit\u003c\/li\u003e\n  \u003cli\u003eManufactured for heavy-duty operating conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHeavy-Duty Roller Assembly Design\u003c\/h3\u003e\n\n\u003cp\u003e\nProduced using durable sealing components and undercarriage-grade materials, this roller assembly is designed to support lubrication retention while helping reduce contamination from dirt, debris and moisture during operation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nPaint finish and coating colour may vary between production runs and may not match original factory finishes. Installation hardware is not included unless otherwise specified within the product details.\n\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Product Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM references: 304-1890, 389-7624, 536-3549\u003c\/li\u003e\n  \u003cli\u003eReplacement Caterpillar® bottom track roller\u003c\/li\u003e\n  \u003cli\u003eDesigned for compact track loader undercarriage systems\u003c\/li\u003e\n  \u003cli\u003eCommercial USA shipping available on qualifying orders\u003c\/li\u003e\n  \u003cli\u003eVerify compatibility before ordering\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IPXGLOBAL","offers":[{"title":"Default Title","offer_id":53879299735879,"sku":"TR-Z012D243","price":379.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/1404\/0647\/files\/download-2026-05-08T144637.246_7e898103-8d26-487e-9695-adda94cede98.png?v=1778248221"},{"product_id":"cat-259b3-drive-sprocket-10-tooth-12-bolt-hole-ctl-part-304-1870","title":"CAT 259B3 Drive Sprocket – 10 Tooth 12 Bolt Hole CTL Part 304-1870","description":"\u003ch3\u003eDrive Sprocket for Caterpillar® 259D Compact Track Loaders\u003c\/h3\u003e\n\n\u003cp\u003e\nThis replacement drive sprocket is manufactured for compatible Caterpillar® 259D compact track loader undercarriage systems. Designed as a replacement for OEM reference \u003cstrong\u003e304-1870\u003c\/strong\u003e, the sprocket helps transfer drive power efficiently through the undercarriage system while supporting reliable rubber track engagement during machine operation.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDrive sprockets are a high-wear undercarriage component and are commonly replaced alongside rubber tracks to help maintain smoother operation and reduce premature wear across the undercarriage system.\n\u003c\/p\u003e\n\n\u003ch3\u003eReplacement Undercarriage Drive Sprocket\u003c\/h3\u003e\n\n\u003cp\u003e\nOEM reference \u003cstrong\u003e304-1870\u003c\/strong\u003e is commonly associated with this style of Caterpillar® compact track loader sprocket. Compatibility should always be verified using machine model details, serial range and existing OEM references before ordering replacement undercarriage components.\n\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eReplacement drive sprocket assembly\u003c\/li\u003e\n  \u003cli\u003eSuitable for Caterpillar® 259D compact track loaders\u003c\/li\u003e\n  \u003cli\u003eDesigned as a replacement for OEM 304-1870\u003c\/li\u003e\n  \u003cli\u003eSupports reliable rubber track engagement\u003c\/li\u003e\n  \u003cli\u003eManufactured for demanding operating environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHeavy-Duty Compact Track Loader Component\u003c\/h3\u003e\n\n\u003cp\u003e\nDrive sprockets play an important role within compact track loader undercarriage systems by transferring machine power through the rubber track assembly while supporting traction and consistent track movement across abrasive and high-load operating conditions.\n\u003c\/p\u003e\n\n\u003cp\u003e\nManufactured using durable undercarriage-grade materials, this replacement sprocket is designed for dependable performance across construction, landscaping, demolition, agricultural and groundwork applications.\n\u003c\/p\u003e\n\n\u003ch3\u003eAdditional Product Information\u003c\/h3\u003e\n\n\u003cul\u003e\n  \u003cli\u003eOEM reference: 304-1870\u003c\/li\u003e\n  \u003cli\u003eReplacement compact track loader drive sprocket\u003c\/li\u003e\n  \u003cli\u003eDesigned for Caterpillar® 259D applications\u003c\/li\u003e\n  \u003cli\u003eSuitable for rubber track undercarriage systems\u003c\/li\u003e\n  \u003cli\u003eCommercial USA shipping available on qualifying orders\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"IPXGLOBAL","offers":[{"title":"Default Title","offer_id":54099173638471,"sku":"SP-Q010C023D","price":191.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0931\/1404\/0647\/files\/SP-Q010C023D.png?v=1778598745"}],"url":"https:\/\/www.ipxglobal.com\/collections\/cat-259b3-ctl-parts.oembed","provider":"IPXGLOBAL","version":"1.0","type":"link"}