Dorman 904-064 Diesel Exhaust Fluid (DEF) Filler Neck

Durable Diesel Exhaust Fluid Filler Neck for Ford Super Duty

The Dorman 904-064 Diesel Exhaust Fluid (DEF) Filler Neck is designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. Constructed from a combination of steel, rubber, and plastic materials, this filler neck ensures reliable performance and resistance to harsh conditions.

• Compatible with Ford F-250 Super Duty and F-350 Super Duty diesel trucks
• Constructed from steel, rubber, and plastic for durability and flexibility
• Measures 32 inches in length, 6 inches in width, and 12 inches in height
• Black color for a clean, factory-style appearance
• Bolt-on attachment method for secure installation
• Does not include mounting hardware or cap

Product Details and Material Composition

The Dorman 904-064 DEF filler neck features a robust steel construction combined with rubber and plastic components to provide a secure and leak-resistant connection for diesel exhaust fluid refilling. The steel offers strength and corrosion resistance, while the rubber and plastic parts provide flexibility and sealing capabilities. Its black finish matches the OEM look and helps protect against environmental wear. The filler neck measures 32 inches long, 6 inches wide, and 12 inches high, making it suitable for the specified Ford Super Duty models.

Applications and Common Issues Addressed

• Replacement for damaged or cracked DEF filler necks on Ford F-250 and F-350 Super Duty trucks
• Prevents DEF fluid leaks that can cause emission system faults
• Helps maintain proper DEF fluid delivery to the emission control system
• Addresses issues related to worn or deteriorated filler neck components
• Supports compliance with diesel emission standards by ensuring proper DEF system function

Installation Notes and Tips

This DEF filler neck uses a bolt-on attachment method for secure mounting. Ensure the mounting points on your Ford F-250 or F-350 Super Duty are clean and free of debris before installation. Since mounting hardware is not included, retain or source the appropriate bolts for installation. Verify the filler neck is properly aligned to avoid leaks or damage during use.

Quality Assurance and Warranty Information

Dorman parts are engineered to meet or exceed OEM specifications for fit and function. The 904-064 DEF filler neck undergoes quality checks to ensure durability and performance in demanding diesel emission systems. Warranty coverage details should be confirmed with the original product documentation or supplier.