{"id":59276,"date":"2026-05-01T03:53:22","date_gmt":"2026-05-01T07:53:22","guid":{"rendered":"https:\/\/allparts.expert\/parts\/uncategorized\/cat-d6-track-ar-heavy-duty-5453978-caterpillar-545-3978-mining\/"},"modified":"2026-05-01T03:54:38","modified_gmt":"2026-05-01T07:54:38","slug":"cat-d6-track-ar-heavy-duty-5453978-caterpillar-545-3978-mining","status":"publish","type":"product","link":"https:\/\/allparts.expert\/es\/parts\/mining\/cat-d6-track-ar-heavy-duty-5453978-caterpillar-545-3978-mining\/","title":{"rendered":"CAT D6 TRACK AR -HEAVY-DUTY 5453978 | Caterpillar 545-3978 | Mining"},"content":{"rendered":"<p>Title<br \/>\nCaterpillar 545-3978 Track Ar -Heavy-Duty | Fits D6, D6XE Excavators<\/p>\n<p>\u2e3b<\/p>\n<p>Opening Paragraph<br \/>\nThe Caterpillar 545-3978 Track Ar -Heavy-Duty is a precision-engineered OEM replacement component designed for D6, D6XE excavators operating in Track-type Tractor and heavy construction environments. Built for structural durability and exact fitment, this track ar -heavy-duty supports critical assemblies to ensure reliable performance and reduced downtime.<\/p>\n<p>\u2e3b<\/p>\n<p>Common Applications<br \/>\nThis Caterpillar 545-3978 track ar -heavy-duty is essential for:<br \/>\nProfessional maintenance of CAT excavators.<br \/>\nDirect replacement of worn structural and pivot components.<br \/>\nHeavy-duty Track-type Tractor and earthmoving operations.<br \/>\nMaintaining proper alignment in equipment linkage systems.<\/p>\n<p>\u2e3b<\/p>\n<p>Fits The Following Models<br \/>\nCAT D6 Excavator<br \/>\nCAT D6XE Excavator<br \/>\n(Verify fitment with your specific serial number.)<\/p>\n<p>\u2e3b<\/p>\n<p>OEM Reference<br \/>\nPart Number: 545-3978<br \/>\nBrand: Caterpillar<br \/>\nCategory: Track-type Tractor<br \/>\nMachine Type: Hydraulic Excavator<br \/>\nCondition: OEM \/ Genuine-Style Replacement<\/p>\n<p>\u2e3b<\/p>\n<p>Product Details and Availability<br \/>\nIn Stock (if confirmed).<br \/>\nGlobal Shipping Available.<br \/>\nSerial Number Verification Support.<br \/>\nRequest Fast Quote for Current Market Pricing.<\/p>\n<p>Access full technical specifications and availability here:<br \/>\n<a href=\"https:\/\/allparts.expert\/es\/parts\/mining\/cat-d6-track-ar-heavy-duty-5453978-caterpillar-545-3978-mining\/\">https:\/\/allparts.expert\/parts\/mining\/cat-d6-track-ar-heavy-duty-5453978-caterpillar-545-3978-mining\/<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Direct OEM Genuine<br \/>\nMulti-Model Compatibility<br \/>\nHeavy-Duty Mining Grade<br \/>\nSerial Verification Available<br \/>\nWorldwide Shipping<\/p>","protected":false},"featured_media":59275,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_joinchat":[]},"product_brand":[36],"machine-type":[6465],"model_no":[37232,37231],"product_cat":[144],"product_tag":[397305,397292,397303,397298,397290,397295,397304,397299,397291,397300,397296,397293,397301,397294,397302,397306,397297,397307],"class_list":{"0":"post-59276","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-caterpillar","7":"machine-type-track-type-tractor","8":"model_no-d6","9":"model_no-d6xe","10":"product_cat-mining","11":"product_tag-545-3978-caterpillar-track-replacement","12":"product_tag-545-3978-heavy-duty-track","13":"product_tag-545-3978-track-assembly","14":"product_tag-545-3978-track-for-caterpillar","15":"product_tag-cat-545-3978-track-ar","16":"product_tag-cat-d6-track-ar","17":"product_tag-cat-parts-for-d6xe","18":"product_tag-cat-track-type-tractor-545-3978","19":"product_tag-caterpillar-545-3978-track-ar","20":"product_tag-caterpillar-d6-heavy-duty-track","21":"product_tag-caterpillar-d6xe-track-parts","22":"product_tag-d6-545-3978-parts","23":"product_tag-d6-track-ar-545-3978","24":"product_tag-d6xe-545-3978-track","25":"product_tag-d6xe-track-ar-caterpillar","26":"product_tag-heavy-duty-track-ar-545-3978","27":"product_tag-heavy-duty-track-for-d6","28":"product_tag-track-parts-for-d6-and-d6xe","30":"first","31":"instock","32":"shipping-taxable","33":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product\/59276","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/comments?post=59276"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media\/59275"}],"wp:attachment":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media?parent=59276"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_brand?post=59276"},{"taxonomy":"machine-type","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/machine-type?post=59276"},{"taxonomy":"model_no","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/model_no?post=59276"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_cat?post=59276"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_tag?post=59276"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}