{"id":38121,"date":"2025-10-23T19:31:06","date_gmt":"2025-10-23T23:31:06","guid":{"rendered":"https:\/\/allparts.expert\/parts\/uncategorized\/caterpillar-421-3135-pin-spring-4213135\/"},"modified":"2025-10-23T19:31:09","modified_gmt":"2025-10-23T23:31:09","slug":"caterpillar-421-3135-pin-spring-4213135","status":"publish","type":"product","link":"https:\/\/allparts.expert\/es\/parts\/mining\/caterpillar-421-3135-pin-spring-4213135\/","title":{"rendered":"CATERPILLAR 421-3135 Pin-Spring 4213135"},"content":{"rendered":"<p><strong>Caterpillar 421-3135 Pin-Spring \u2013 OEM-Grade Durability for Heavy Equipment<\/strong><\/p>\n<p>The Caterpillar 421-3135 Pin-Spring is a critical component engineered for a wide range of heavy machinery, including articulated dump trucks (AXM-740, 8PS-D400E II, AZZ-740), earthmoving compactors (BZR-816F II, 5FN-816F, LT6-816K), and forest products equipment (HAF-HA771, WBG-TK371). Manufactured with high-grade alloy steel, this pin-spring offers exceptional tensile strength and resistance to wear under extreme load conditions. Its precise dimensions ensure optimal fit and function within the drivetrain and suspension systems, contributing to the overall reliability and longevity of Caterpillar equipment.<\/p>\n<p>Designed to withstand rigorous operational stresses, the 421-3135 Pin-Spring features advanced metallurgy that enhances fatigue resistance and reduces the risk of deformation or failure during heavy-duty applications. This OEM-quality part maintains consistent performance across diverse environments, from mining to forestry and earthmoving. By ensuring secure pin retention and smooth articulation, it minimizes downtime and maintenance costs, making it an indispensable part for maintaining peak equipment efficiency.<\/p>\n<p>For reliable replacement parts that meet Caterpillar\u2019s stringent standards, explore the full specifications and availability of the 421-3135 Pin-Spring here: \ud83d\udd17 <a href=\"https:\/\/allparts.expert\/es\/parts\/mining\/caterpillar-421-3135-pin-spring-4213135\/\">Caterpillar 421-3135 Pin-Spring at AllParts Expert<\/a>. Ensure your heavy machinery operates at maximum performance with this durable, precision-engineered component.<\/p>","protected":false},"excerpt":{"rendered":"<p>AXM-740 Articulated Dump Truck<br \/>\n8PS-D400E II Articulated Dump Truck<br \/>\nAZZ-740 Articulated Dump Truck<br \/>\nAPF-D400E II Articulated Dump Truck<br \/>\nBZR-816F II Earthmoving Compactor<br \/>\n5FN-816F Earthmoving Compactor<br \/>\nBMR-816F Earthmoving Compactor<br \/>\nLT6-816K Earthmoving Compactor<br \/>\nSLL-816K Earthmoving Compactor<br \/>\nWCL-816K Earthmoving Compactor<br \/>\nWNB-816K Earthmoving Compactor<br \/>\nJ6N-816 Earthmoving Compactor<br \/>\nM6N-816 Earthmoving Compactor<br \/>\n1GN-815F Earthmoving Compactor<br \/>\nBYN-815F II Earthmoving Compactor<br \/>\nBKL-815F Earthmoving Compactor<br \/>\nMBB-815K Earthmoving Compactor<br \/>\nSL9-815K Earthmoving Compactor<br \/>\nT1Y-815K Earthmoving Compactor<br \/>\nWCS-815K Earthmoving Compactor<br \/>\nJ5T-815 Earthmoving Compactor<br \/>\nM5C-815 Earthmoving Compactor<br \/>\nRTX-SPF343C Engine &#8211; Industrial<br \/>\nHAF-HA771 Forest Products<br \/>\nWBG-TK371 Forest Products<br \/>\nCDR-533 Forest Products<br \/>\nHAB-HA770 Forest Products<br \/>\nWBD-TK370 Forest Products<br \/>\nHAG-HA871 Forest Products<br \/>\nWBH-TK381 Forest Products<br \/>\nSP4-2864C Forest Products<br \/>\nSL5-586C Forest Products<br \/>\nSP5-586C Forest Products<br \/>\nW2M-2470C<\/p>","protected":false},"featured_media":37119,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false,"_joinchat":[]},"product_brand":[36],"machine-type":[21022],"model_no":[30069,641,718,719,720,721,40396,54898,41476,41481,642,27616,724,725,726,727,37875,17293,1827,1823,2540,2541,7544,8499,1677,7545,5270,5213,1377,1378,1382,104,105,1379,688,7177,38848,689,690,7176,38847,691,2946,32841,32842,7162,32843,32844,2614,660,41477,41474,41482,41479,3181,27613,18538,27611,27614,3274,644,778,27669,27670,655,6567,32832,32831,32833,32834,28679,32835,32836,32837,32838,6568,32839,32840,41478,41475,41483,41480],"product_cat":[144],"product_tag":[231206,231211,231207,231202,231200,231210,231214,231198,231204,231208,231212,231203,231195],"class_list":{"0":"post-38121","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-caterpillar","7":"machine-type-articulated-dump-truck","8":"model_no-140-gc","9":"model_no-2470c","10":"model_no-2570c","11":"model_no-2570d","12":"model_no-2670c","13":"model_no-2670d","14":"model_no-2864c","15":"model_no-300-9d","16":"model_no-41476","17":"model_no-41481","18":"model_no-553c","19":"model_no-561n","20":"model_no-563c","21":"model_no-563d","22":"model_no-573c","23":"model_no-573d","24":"model_no-586c","25":"model_no-69d","26":"model_no-1827","27":"model_no-769d","28":"model_no-771d","29":"model_no-776c","30":"model_no-784b","31":"model_no-784c","32":"model_no-1677","33":"model_no-785b","34":"model_no-785c","35":"model_no-785d","36":"model_no-1377","37":"model_no-789b","38":"model_no-789c","39":"model_no-104","40":"model_no-793b","41":"model_no-793c","42":"model_no-688","43":"model_no-815f","44":"model_no-815f-ii","45":"model_no-815k","46":"model_no-690","47":"model_no-816f","48":"model_no-816f-ii","49":"model_no-816k","50":"model_no-cx31-p600","51":"model_no-d3k-lgp","52":"model_no-d3k-xl","53":"model_no-d400e-ii","54":"model_no-d4k-lgp","55":"model_no-d4k-xl","56":"model_no-d5n","57":"model_no-d6n","58":"model_no-ha770","59":"model_no-ha771","60":"model_no-ha870","61":"model_no-ha871","62":"model_no-it12b","63":"model_no-it24f","64":"model_no-it28g","65":"model_no-it38f","66":"model_no-it38g","67":"model_no-it38g-ii","68":"model_no-it38h","69":"model_no-it62g","70":"model_no-it62g-ii","71":"model_no-it62h","72":"model_no-pl61","73":"model_no-spf343c","74":"model_no-th220b","75":"model_no-th31-e61","76":"model_no-th330b","77":"model_no-th340b","78":"model_no-th35-e81","79":"model_no-th350b","80":"model_no-th355b","81":"model_no-th360b","82":"model_no-th460b","83":"model_no-th48-e80","84":"model_no-th560b","85":"model_no-th580b","86":"model_no-tk370","87":"model_no-tk371","88":"model_no-tk380","89":"model_no-tk381","90":"product_cat-mining","91":"product_tag-421-3135-part-for-azz-740-articulated-dump-truck","92":"product_tag-421-3135-pin-spring-for-apf-d400e-ii","93":"product_tag-421-3135-pin-spring-for-bzr-816f-earthmoving-compactor","94":"product_tag-421-3135-pin-spring-for-earthmoving-compactor","95":"product_tag-421-3135-spring-pin-for-articulated-dump-truck","96":"product_tag-4213135-heavy-machinery-pin-spring","97":"product_tag-cat-421-3135-spring-pin-for-construction-machinery","98":"product_tag-cat-4213135-pin-spring","99":"product_tag-cat-pin-spring-421-3135-for-mining-equipment","100":"product_tag-cat-spring-pin-421-3135-for-forestry-machinery","101":"product_tag-caterpillar-421-3135-pin-for-rtx-spf343c-engine","102":"product_tag-caterpillar-421-3135-replacement-part","103":"product_tag-caterpillar-pin-spring-421-3135","105":"first","106":"instock","107":"shipping-taxable","108":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product\/38121","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=38121"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media\/37119"}],"wp:attachment":[{"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/media?parent=38121"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_brand?post=38121"},{"taxonomy":"machine-type","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/machine-type?post=38121"},{"taxonomy":"model_no","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/model_no?post=38121"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_cat?post=38121"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/allparts.expert\/es\/wp-json\/wp\/v2\/product_tag?post=38121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}",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