{"id":5790,"date":"2026-04-21T09:50:40","date_gmt":"2026-04-21T09:50:40","guid":{"rendered":"http:\/\/ql-autoparts.com\/?post_type=product&#038;p=5790"},"modified":"2026-04-21T09:54:04","modified_gmt":"2026-04-21T09:54:04","slug":"wg221004000006040115-main-shaft-second-gear","status":"publish","type":"product","link":"http:\/\/ql-autoparts.com\/ru\/product\/wg221004000006040115-main-shaft-second-gear\/","title":{"rendered":"WG221004000006(040115) \u0413\u043b\u0430\u0432\u043d\u044b\u0439 \u0432\u0430\u043b \u0432\u0442\u043e\u0440\u043e\u0439 \u043f\u0435\u0440\u0435\u0434\u0430\u0447\u0438"},"content":{"rendered":"<p data-start=\"155\" data-end=\"438\">WG221004000006 (040115) 2nd gear is a core transmission component in heavy-duty truck gearboxes, specifically responsible for power transmission and conversion in second gear. It ensures smooth shifting, stable driving, and reliable performance under various complex road conditions.<\/p>\n<p data-start=\"440\" data-end=\"664\">This gear is precisely engineered to solve common gearbox issues such as gear sticking, abnormal noise, gear jumping, and inefficient power transmission, making it an essential component for heavy truck transmission systems.<\/p>\n<div id='gallery-1' class='gallery galleryid-5790 gallery-columns-2 gallery-size-full'><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/ql-autoparts.com\/ru\/?attachment_id=5795'><img fetchpriority=\"high\" decoding=\"async\" width=\"400\" height=\"400\" src=\"http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1.jpg 400w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1-300x300.jpg 300w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1-150x150.jpg 150w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1-12x12.jpg 12w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/1-1-100x100.jpg 100w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/a>\n\t\t\t<\/div><\/figure><figure class='gallery-item'>\n\t\t\t<div class='gallery-icon landscape'>\n\t\t\t\t<a href='http:\/\/ql-autoparts.com\/ru\/?attachment_id=5796'><img decoding=\"async\" width=\"400\" height=\"400\" src=\"http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1.jpg\" class=\"attachment-full size-full\" alt=\"\" srcset=\"http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1.jpg 400w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1-300x300.jpg 300w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1-150x150.jpg 150w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1-12x12.jpg 12w, http:\/\/ql-autoparts.com\/wp-content\/uploads\/2026\/04\/2-1-100x100.jpg 100w\" sizes=\"(max-width: 400px) 100vw, 400px\" \/><\/a>\n\t\t\t<\/div><\/figure>\n\t\t<\/div>\n\n<h2 data-section-id=\"m44tft\" data-start=\"671\" data-end=\"689\">Key Features<\/h2>\n<h3 data-section-id=\"1lo4kee\" data-start=\"691\" data-end=\"717\">High Strength Material<\/h3>\n<p data-start=\"718\" data-end=\"884\">Made from premium alloy structural steel through precision forging, offering excellent toughness and strength to withstand high torque loads in second gear operation.<\/p>\n<h3 data-section-id=\"1h263tw\" data-start=\"886\" data-end=\"913\">Advanced Heat Treatment<\/h3>\n<p data-start=\"914\" data-end=\"956\">Carburizing and quenching process ensures:<\/p>\n<ul data-start=\"957\" data-end=\"1044\">\n<li data-section-id=\"l2i6h9\" data-start=\"957\" data-end=\"985\">Uniform surface hardness<\/li>\n<li data-section-id=\"17l16g4\" data-start=\"986\" data-end=\"1014\">Enhanced wear resistance<\/li>\n<li data-section-id=\"a8st2t\" data-start=\"1015\" data-end=\"1044\">Superior fatigue strength<\/li>\n<\/ul>\n<h3 data-section-id=\"2p2dy9\" data-start=\"1046\" data-end=\"1074\">Precision Gear Machining<\/h3>\n<p data-start=\"1075\" data-end=\"1122\">Processed with gear grinding and polishing for:<\/p>\n<ul data-start=\"1123\" data-end=\"1212\">\n<li data-section-id=\"yrdu60\" data-start=\"1123\" data-end=\"1154\">High tooth profile accuracy<\/li>\n<li data-section-id=\"la4x64\" data-start=\"1155\" data-end=\"1180\">Smooth surface finish<\/li>\n<li data-section-id=\"14luvam\" data-start=\"1181\" data-end=\"1212\">Stable and seamless meshing<\/li>\n<\/ul>\n<h3 data-section-id=\"1dv4jmi\" data-start=\"1214\" data-end=\"1243\">Stable &amp; Smooth Operation<\/h3>\n<p data-start=\"1244\" data-end=\"1269\">Optimized design reduces:<\/p>\n<ul data-start=\"1270\" data-end=\"1344\">\n<li data-section-id=\"5sj7lp\" data-start=\"1270\" data-end=\"1291\">Transmission loss<\/li>\n<li data-section-id=\"1fbj7u7\" data-start=\"1292\" data-end=\"1315\">Noise and vibration<\/li>\n<li data-section-id=\"115c5zq\" data-start=\"1316\" data-end=\"1344\">Gear sticking and impact<\/li>\n<\/ul>\n<h2 data-section-id=\"cpjktu\" data-start=\"1351\" data-end=\"1371\">Core Functions<\/h2>\n<ul data-start=\"1372\" data-end=\"1561\">\n<li data-section-id=\"1llxt6m\" data-start=\"1372\" data-end=\"1419\">Efficient power transmission in second gear<\/li>\n<li data-section-id=\"kponwd\" data-start=\"1420\" data-end=\"1455\">Smooth and stable gear shifting<\/li>\n<li data-section-id=\"vkmztx\" data-start=\"1456\" data-end=\"1506\">Reliable operation under heavy-load conditions<\/li>\n<li data-section-id=\"10a61f9\" data-start=\"1507\" data-end=\"1561\">Strong compatibility with multiple gearbox systems<\/li>\n<\/ul>\n<h2 data-section-id=\"poa6to\" data-start=\"1568\" data-end=\"1592\">Product Advantages<\/h2>\n<ul data-start=\"1594\" data-end=\"1897\">\n<li data-section-id=\"btqv1t\" data-start=\"1594\" data-end=\"1660\">High durability, resistant to tooth breakage and deformation<\/li>\n<li data-section-id=\"r2q9um\" data-start=\"1661\" data-end=\"1731\">Perfect meshing with input shaft, countershaft, and synchronizer<\/li>\n<li data-section-id=\"ihzm4l\" data-start=\"1732\" data-end=\"1785\">Reduced wear, no abnormal noise or gear jumping<\/li>\n<li data-section-id=\"p8uqso\" data-start=\"1786\" data-end=\"1850\">Cost-effective solution for gearbox repair and replacement<\/li>\n<li data-section-id=\"1f0ewqy\" data-start=\"1851\" data-end=\"1897\">Stable supply for bulk orders and export<\/li>\n<\/ul>\n<h2 data-section-id=\"1sjyizn\" data-start=\"1904\" data-end=\"1934\">Technical Specifications<\/h2>\n<ul data-start=\"1936\" data-end=\"2177\">\n<li data-section-id=\"1peb453\" data-start=\"1936\" data-end=\"1962\">Product Name: 2nd Gear<\/li>\n<li data-section-id=\"onqzym\" data-start=\"1963\" data-end=\"1997\">Model: WG221004000006 (040115)<\/li>\n<li data-section-id=\"185rsac\" data-start=\"1998\" data-end=\"2034\">Application: Heavy Truck Gearbox<\/li>\n<li data-section-id=\"1h75s0o\" data-start=\"2035\" data-end=\"2071\">Material: Alloy Structural Steel<\/li>\n<li data-section-id=\"vvx1ng\" data-start=\"2072\" data-end=\"2128\">Process: Precision Forging + Carburizing &amp; Quenching<\/li>\n<li data-section-id=\"dvu0qr\" data-start=\"2129\" data-end=\"2177\">Surface Treatment: Gear Grinding &amp; Polishing<\/li>\n<\/ul>\n<h2 data-section-id=\"1h9jliy\" data-start=\"2184\" data-end=\"2211\">Application Scenarios<\/h2>\n<ul data-start=\"2212\" data-end=\"2380\">\n<li data-section-id=\"u0h0lb\" data-start=\"2212\" data-end=\"2258\">Heavy truck gearbox repair and maintenance<\/li>\n<li data-section-id=\"12h9b1a\" data-start=\"2259\" data-end=\"2296\">Transmission assembly replacement<\/li>\n<li data-section-id=\"1gsgi53\" data-start=\"2297\" data-end=\"2340\">Auto parts distributors and wholesalers<\/li>\n<li data-section-id=\"i61q6h\" data-start=\"2341\" data-end=\"2380\">International export and OEM supply<\/li>\n<\/ul>\n<h2 data-section-id=\"15pa784\" data-start=\"2387\" data-end=\"2409\">Supply &amp; Service<\/h2>\n<ul data-start=\"2411\" data-end=\"2572\">\n<li data-section-id=\"kxp44\" data-start=\"2411\" data-end=\"2444\">Ready stock for fast delivery<\/li>\n<li data-section-id=\"17d2ll9\" data-start=\"2445\" data-end=\"2492\">Support bulk purchase and OEM customization<\/li>\n<li data-section-id=\"1yf7iyg\" data-start=\"2493\" data-end=\"2526\">Professional export packaging<\/li>\n<li data-section-id=\"g8taqr\" data-start=\"2527\" data-end=\"2572\">Technical support and after-sales service<\/li>\n<\/ul>\n<p>WG221004000006 (040115) 2nd gear is a reliable and durable solution for heavy truck gearbox systems. With precision engineering, high-strength materials, and stable performance, it ensures smooth second gear operation, reduces maintenance costs, and improves vehicle uptime.<\/p>","protected":false},"excerpt":{"rendered":"<p>The WG221004000006 (040115) main shaft second gear is a core transmission component of heavy-duty truck gearboxes, responsible for the crucial role of second-gear power transmission, ensuring smooth shifting and stable power output. Utilizing precision forging, carburizing and quenching, and fine grinding processes, it boasts high tooth profile accuracy, uniform meshing clearance, and excellent impact resistance, wear resistance, and fatigue resistance. It effectively prevents common faults such as skipped teeth, abnormal noises, and broken teeth. With ample stock, it is a preferred component for heavy-duty truck gearboxes.<\/p>","protected":false},"featured_media":5793,"template":"","meta":{"_seopress_robots_primary_cat":"none","_seopress_titles_title":"WG221004000006 2nd Gear for Truck Gearbox | Durable Alloy Steel Transmission Gear","_seopress_titles_desc":"WG221004000006 (040115) 2nd gear for heavy truck gearbox. Made of high-strength alloy steel with carburizing and precision grinding for smooth shifting, low noise, and long service life. Ideal for gearbox repair, wholesale, and global export supply.","_seopress_robots_index":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"default","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"product_brand":[],"product_cat":[114],"product_tag":[],"class_list":{"0":"post-5790","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-wg221004000006040115-second-gear","7":"desktop-align-center","8":"tablet-align-left","9":"mobile-align-left","10":"ast-product-gallery-layout-horizontal-slider","11":"ast-product-tabs-layout-horizontal","13":"first","14":"instock","15":"shipping-taxable","16":"product-type-simple"},"_links":{"self":[{"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/product\/5790","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/product"}],"about":[{"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/media\/5793"}],"wp:attachment":[{"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/media?parent=5790"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/product_brand?post=5790"},{"taxonomy":"product_cat","embeddable":true,"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/product_cat?post=5790"},{"taxonomy":"product_tag","embeddable":true,"href":"http:\/\/ql-autoparts.com\/ru\/wp-json\/wp\/v2\/product_tag?post=5790"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}