{"id":49621,"date":"2026-01-25T23:39:18","date_gmt":"2026-01-26T04:39:18","guid":{"rendered":"https:\/\/allparts.expert\/parts\/uncategorized\/caterpillar-087-6439-boom-as-brg-876439\/"},"modified":"2026-01-25T23:39:21","modified_gmt":"2026-01-26T04:39:21","slug":"caterpillar-087-6439-boom-as-brg-876439","status":"publish","type":"product","link":"https:\/\/allparts.expert\/es\/parts\/mining\/caterpillar-087-6439-boom-as-brg-876439\/","title":{"rendered":"CATERPILLAR 087-6439 Boom AS-Brg & 876439"},"content":{"rendered":"

CATERPILLAR 087-6439 Boom Assembly Bearing \u2013 OEM-Grade Excavator Spare Part for Enhanced Durability and Performance<\/strong><\/p>\n

The CATERPILLAR 087-6439 Boom Assembly Bearing (Part Number 876439) is a precision-engineered component designed for a wide range of Caterpillar excavators including models 8CK-330 LN, 2EL-330 L, 6SK-330 L, 6WJ-330 L, 8FK-330 L, and their respective \u201c-A\u201d variants such as 8FK-330-A L and 8CK-330-A LN. Manufactured to meet stringent OEM specifications, this boom assembly bearing ensures optimal load distribution and smooth articulation under heavy-duty load conditions. Constructed from high-grade metallurgy, it offers exceptional wear resistance and structural integrity, critical for the demanding drivetrain and hydraulic systems of large excavators.<\/p>\n

Technically, the 087-6439 bearing features precision-machined surfaces and robust sealing to prevent contamination and extend service life in harsh mining and construction environments. Its compatibility across multiple 330 series excavators highlights its versatility and reliability. By maintaining proper alignment and reducing friction within the boom assembly, this bearing significantly enhances operational efficiency and reduces downtime. Investing in this genuine Caterpillar spare part guarantees OEM-grade quality, ensuring your excavator maintains peak performance and durability over extended operational cycles.<\/p>\n

\ud83d\udd17 For detailed specifications and to purchase the genuine CATERPILLAR 087-6439 Boom Assembly Bearing, visit AllParts Expert – Caterpillar 087-6439 Boom AS-Brg & 876439<\/a><\/p>","protected":false},"excerpt":{"rendered":"

8CK-330 LN Excavator
\n2EL-330 L Excavator
\n6SK-330 L Excavator
\n6WJ-330 L Excavator
\n8FK-330 L Excavator
\n8FK-330-A L Excavator
\n8CK-330-A LN Excavator
\n2EL-330-A L Excavator
\n5YM-330-A L Excavator
\n6SK-330-A L Excavator
\n6WJ-330-A L Excavator
\n9ML-330-A L Excavator
\n2ZM-330-A Excavator
\n6ZK-330-A Excavator
\n8RL-330-A Excavator
\n9NG-330-A Excavator
\n9PJ-330-A Excavator
\n9WJ-330-A Excavator<\/p>","protected":false},"featured_media":49421,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_joinchat":[]},"product_brand":[36],"machine-type":[52],"model_no":[7073,7205,2055,7074,7206],"product_cat":[144],"product_tag":[326480,326472,326476,326493,326488,326502,326496,326484,326504,310211,326494,326507,326478,326499,326486,326500,326491,326474,326482,326505],"class_list":{"0":"post-49621","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-caterpillar","7":"machine-type-excavator","8":"model_no-330-l","9":"model_no-330-ln","10":"model_no-330-a","11":"model_no-330-a-l","12":"model_no-330-a-ln","13":"product_cat-mining","14":"product_tag-087-6439-boom-arm-bearing","15":"product_tag-087-6439-boom-as-brg","16":"product_tag-087-6439-boom-assembly","17":"product_tag-087-6439-boom-bearing-assembly","18":"product_tag-087-6439-boom-pivot-bearing","19":"product_tag-087-6439-cat-excavator-boom-component","20":"product_tag-087-6439-caterpillar-boom-spare-parts","21":"product_tag-087-6439-excavator-boom-bracket","22":"product_tag-087-6439-heavy-equipment-boom-bearing","23":"product_tag-cat-087-6439-boom-bearing","24":"product_tag-cat-087-6439-earthmoving-parts","25":"product_tag-cat-087-6439-excavator-arm-bearing","26":"product_tag-cat-087-6439-excavator-spare","27":"product_tag-cat-087-6439-hydraulic-excavator-part","28":"product_tag-cat-087-6439-mining-equipment-part","29":"product_tag-caterpillar-087-6439-boom-joint","30":"product_tag-caterpillar-087-6439-construction-equipment","31":"product_tag-caterpillar-087-6439-excavator-boom-part","32":"product_tag-caterpillar-087-6439-heavy-machinery-part","33":"product_tag-caterpillar-087-6439-track-loader-boom-part","35":"first","36":"instock","37":"shipping-taxable","38":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product\/49621","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=49621"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media\/49421"}],"wp:attachment":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media?parent=49621"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_brand?post=49621"},{"taxonomy":"machine-type","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/machine-type?post=49621"},{"taxonomy":"model_no","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/model_no?post=49621"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_cat?post=49621"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_tag?post=49621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}