{"id":4035,"date":"2025-07-09T14:31:16","date_gmt":"2025-07-09T14:31:16","guid":{"rendered":"https:\/\/generaltruckparts.com\/?post_type=product&#038;p=3994"},"modified":"2025-10-01T18:42:01","modified_gmt":"2025-10-01T18:42:01","slug":"dana-ds404-264","status":"publish","type":"product","link":"https:\/\/generaltruckparts.com\/shop\/differential-axle\/differential-assemblies\/dana-ds404-264\/","title":{"rendered":"Dana\/Spicer DS404-264 Differential Assembly"},"content":{"rendered":"<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p>The <strong>Dana Spicer DS404-264<\/strong> is a high-performance, heavy-duty <strong>tandem drive axle differential<\/strong> designed for use in Class 8 trucks and severe-duty vocational vehicles. Known for its strength, dependability, and ease of maintenance, the DS404 features a hypoid gear design that ensures efficient power transmission with reduced noise and vibration.<\/p>\n<p>Engineered to support a <strong>gross axle weight rating (GAWR) of 40,000 lbs<\/strong>, the DS404 is built with a <strong>rugged cast ductile iron housing<\/strong> and heat-treated components for extended service life. It is highly configurable, offering a wide range of gear ratios and compatibility with various suspension systems and brake configurations. This makes it a preferred choice for fleets requiring cost-effective, long-lasting driveline solutions.<\/p>\n<h5><strong>Technical Specifications<\/strong><\/h5>\n<h6><strong>General Features:<\/strong><\/h6>\n<ul>\n<li>Tandem drive axle differential for heavy-duty applications<\/li>\n<li>Single-reduction, hypoid gear design<\/li>\n<li>Designed for both on-highway and vocational use<\/li>\n<\/ul>\n<h6><strong>Axle Rating &#038; Capacity:<\/strong><\/h6>\n<ul>\n<li>Gross Axle Weight Rating (GAWR): <strong>40,000 lbs (18,144 kg)<\/strong><\/li>\n<li>Designed for Class 8 trucks and severe-duty environments<\/li>\n<\/ul>\n<h6><strong>Gear and Shaft Details:<\/strong><\/h6>\n<ul>\n<li>Ring Gear Diameter: <strong>15.25 inches (387.35 mm)<\/strong><\/li>\n<li>Input Shaft Spline: <strong>39-spline standard<\/strong><\/li>\n<li>Available Gear Ratios:\n<ul>\n<li><strong>3.08, 3.21, 3.36, 3.55, 3.70, 3.90, 4.10, 4.33, 4.63, 4.88, 5.29<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h6><strong>Construction and Materials:<\/strong><\/h6>\n<ul>\n<li>Housing: <strong>Cast ductile iron for high strength and durability<\/strong><\/li>\n<li>Heat-treated, high-strength steel gears<\/li>\n<\/ul>\n<h6><strong>Carrier Configuration:<\/strong><\/h6>\n<ul>\n<li>Carrier Type: <strong>DS-style (downward spiral hypoid)<\/strong><\/li>\n<li>Carrier Weight (approx.): <strong>678 lbs (308 kg)<\/strong><\/li>\n<\/ul>\n<h6><strong>Lubrication System:<\/strong><\/h6>\n<ul>\n<li>Internal pressurized lubrication for improved cooling and component life<\/li>\n<li>Optional lubrication pump for high-demand environments<\/li>\n<li>Oil Capacity (approx.): <strong>16\u201318 quarts per axle<\/strong>, depending on configuration<\/li>\n<\/ul>\n<h6><strong>Differential Locking Options:<\/strong><\/h6>\n<ul>\n<li>Optional <strong>inter-axle differential lock (power divider lock)<\/strong> for improved traction<\/li>\n<li>Air-actuated locking systems available<\/li>\n<\/ul>\n<h6><strong>Suspension and Brake Compatibility:<\/strong><\/h6>\n<ul>\n<li>Compatible with <strong>air, leaf, and walking beam suspension systems<\/strong><\/li>\n<li>Multiple track widths available<\/li>\n<li>ABS sensor-ready hubs optional<\/li>\n<\/ul>\n<h6><strong>Serviceability and Maintenance:<\/strong><\/h6>\n<ul>\n<li>Standardized design with widely available replacement parts<\/li>\n<li>Easily removable carrier for in-shop servicing<\/li>\n<li>Sealed input for reduced lubricant loss<\/li>\n<\/ul>\n<h5><strong>Applications:<\/strong><\/h5>\n<ul>\n<li>Long-haul trucking<\/li>\n<li>Construction and dump trucks<\/li>\n<li>Logging and forestry vehicles<\/li>\n<li>Refuse and waste management trucks<\/li>\n<li>Mining and oilfield support vehicles<\/li>\n<\/ul>\n<h5><strong>Key Benefits:<\/strong><\/h5>\n<ul>\n<li>High-torque, high-load capability<\/li>\n<li>Quiet, smooth operation due to hypoid gear design<\/li>\n<li>Wide range of gear ratios for fuel economy and performance optimization<\/li>\n<li>Designed for ease of maintenance and reduced downtime<\/li>\n<li>Proven durability in demanding fleet environments<\/li>\n<\/ul>\n<p>\u00a0<\/p>\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-a89b3969 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-primary-background-color has-background wp-element-button\" href=\"https:\/\/generaltruckparts.com\/wp-content\/uploads\/2025\/05\/Dana-Differentials-Manual.pdf\">DOWNLOAD DS-404 MANUAL<\/a><\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p class=\"ai-optimize-27\">The <strong>Dana Spicer DS404-264<\/strong> is a high-performance, heavy-duty tandem drive axle differential designed for use in Class 8 trucks and severe-duty vocational vehicles.<br \/>\n<strong>DS404264GTP<\/strong><\/p>\n","protected":false},"featured_media":11559,"template":"","meta":{"_acf_changed":false},"product_brand":[217],"product_cat":[148,170],"product_tag":[2915,2946],"class_list":{"0":"post-4035","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-dana","7":"product_cat-differential-axle","8":"product_cat-differential-assemblies","9":"product_tag-differential-assembly","10":"product_tag-ds404","11":"product_shipping_class-heavy-packages","12":"pa_product-category-differential-axle","13":"pa_subcategory-differential-assemblies","15":"first","16":"instock","17":"featured","18":"taxable","19":"shipping-taxable","20":"purchasable","21":"product-type-simple"},"exclude_global_add_ons":false,"addons":[{"name":"Core Price 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notes or requests","type":"custom_textarea","position":3,"required":false,"title_format":"label","default":"","description_enable":false,"description":"","placeholder_enable":false,"placeholder":"","display":"select","restrictions_type":"any_text","adjust_price":false,"price":"","price_type":"flat_fee","restrictions":false,"min":"0","max":"0","options":[],"id":1749443746}],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.5 (Yoast SEO v26.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dana\/Spicer DS404-264 Differential Assembly - General Truck Parts and Equipment<\/title>\n<meta name=\"description\" content=\"The Dana Spicer DS404-264 is a high-performance, heavy-duty tandem drive axle differential designed for use in Class 8 trucks and severe-duty vocational vehicles. 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