Dorman 904-7938 Diesel Exhaust Fluid (DEF) Filler Neck Filter

Overview of Dorman Diesel Exhaust Fluid Filler Neck Filter

The Dorman 904-7938 diesel exhaust fluid (DEF) filler neck filter is designed to maintain the integrity of your vehicle's DEF system. Constructed from durable black plastic, this 7.5-inch long filler neck filter clips on securely to help prevent contaminants from entering the DEF tank.

• Made from sturdy black plastic for corrosion resistance
• Measures 7.5 inches in length and 1.9 inches in width
• Clip-on attachment method for straightforward installation
• Includes one diesel exhaust fluid filler neck filter per package

Product Details and Specifications

The Dorman 904-7938 DEF filler neck filter is engineered to fit a range of diesel vehicles requiring a reliable emission control component. Its plastic construction offers resistance to chemical exposure common in DEF systems. The clip-on design allows for a secure fit without the need for additional fasteners, simplifying replacement or maintenance. The black color blends with most engine bay components, maintaining a clean appearance.

Compatible Vehicles and Fitment Information

This diesel exhaust fluid filler neck filter is compatible with various diesel truck and SUV models that utilize DEF systems. While specific make and model fitment should be verified, the Dorman 904-7938 is commonly used in diesel vehicles from manufacturers such as Ford, Chevrolet, and Dodge. Always consult your vehicle’s service manual or a parts specialist to confirm compatibility with your particular model.

Common Applications and Problem Resolution

• Prevents debris and contaminants from entering the DEF tank
• Helps maintain proper DEF fluid flow and system performance
• Reduces risk of DEF system clogs or malfunctions
• Supports emission control compliance by protecting DEF components
• Replaces worn or damaged filler neck filters to restore system integrity

Installation Notes and Tips

Installation of the Dorman 904-7938 DEF filler neck filter is straightforward due to its clip-on attachment method. Ensure the existing filler neck area is clean and free of debris before attaching the new filter. Align the filter properly and press firmly until it clips securely in place. No additional tools or hardware are typically required for installation.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for quality and durability. The 904-7938 diesel exhaust fluid filler neck filter undergoes rigorous testing to ensure reliable performance in emission control systems. Please refer to Dorman’s warranty policy for specific coverage details.