Dorman 904-057 Engine Crankcase Breather Hose - Oil Separator To Connector

Engine Crankcase Breather Hose for Ford F-250 and F-350 Super Duty

The Dorman 904-057 engine crankcase breather hose is designed to maintain proper ventilation within the crankcase of your Ford F-250 Super Duty or F-350 Super Duty. Constructed from durable plastic, this 14.5-inch hose ensures reliable performance and helps support your vehicle's emission control system.

• Durable black plastic construction for long-lasting use
• 14.5 inches in length, designed for precise fitment
• End 1 inside diameter: 1 inch; outside diameter: 1.75 inches
• End 2 inside diameter: 0.75 inch; outside diameter: 1 inch
• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• Part number 904-057 for easy identification and replacement

Product Details and Specifications

This engine crankcase breather hose from Dorman is engineered to meet the specifications required for Ford Super Duty trucks. The hose measures 14.5 inches in length and features a black plastic material that resists heat and chemical exposure common in engine compartments. The hose ends have different diameters—1 inch inside diameter on one end and 0.75 inch on the other—to ensure a secure connection between the crankcase and the ventilation system. The outside diameters are 1.75 inches and 1 inch respectively, providing a tight seal to prevent leaks.

Purpose and Common Applications

• Maintains proper crankcase ventilation to reduce pressure buildup
• Prevents oil leaks caused by faulty or damaged breather hoses
• Helps reduce harmful emissions by routing gases back into the intake system
• Supports engine performance by ensuring efficient air flow
• Replaces worn or cracked breather hoses in Ford F-250 and F-350 Super Duty trucks

Installation Notes and Tips

When installing the Dorman 904-057 breather hose, ensure the hose is routed correctly to avoid kinks or sharp bends that could restrict airflow. Verify that the hose ends fit securely onto the corresponding engine components to prevent leaks. It is recommended to inspect related components such as clamps and connectors during installation to ensure a complete and secure fit.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your Ford F-250 Super Duty and F-350 Super Duty trucks. While specific warranty details for part number 904-057 are not provided here, Dorman typically offers limited warranties on their emission control components. Refer to Dorman’s official documentation for complete warranty information.