Dorman 904-401 Engine Valve Cover Gasket - Left or Right

Durable Silicone Engine Valve Cover Gasket for Ford Vehicles

The Dorman 904-401 engine valve cover gasket is designed to provide reliable sealing for select Ford trucks and SUVs. Made from high-quality silicone, this multi-piece gasket set ensures a secure fit and long-lasting performance for your Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models.

• Constructed from durable silicone material for heat and oil resistance
• Multi-piece configuration includes valve cover gasket, rocker box gasket, seals, and grommets
• Standard grade thickness of 6.7 mm for effective sealing
• Complete package contains 1 valve cover gasket, 1 rocker box gasket, 4 seals, and 11 grommets
• Compatible with Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty

Product Details and Specifications

The Dorman 904-401 valve cover gasket set is engineered to meet OEM specifications for a proper seal and fit. The silicone material offers excellent resistance to engine heat and oil exposure, helping to prevent leaks and maintain engine performance. The multi-piece design includes all necessary components such as the rocker box gasket, seals, and grommets, providing a comprehensive sealing solution. With a thickness of 6.7 mm, this standard grade gasket balances durability and flexibility to accommodate engine movement and thermal expansion.

Compatible Ford Models and Applications

This gasket set is compatible with a range of Ford heavy-duty vehicles, including the E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty. It is specifically designed to fit these models, ensuring proper sealing and engine protection.

Common Issues Addressed by This Gasket Set

• Prevents oil leaks from the valve cover area
• Reduces engine contamination from external debris
• Maintains proper engine pressure and performance
• Eliminates gasket deterioration caused by heat and oil exposure
• Prevents damage to valve cover and rocker box components

Installation Notes and Tips

Before installation, clean the valve cover and surrounding surfaces thoroughly to remove old gasket material and oil residue. Ensure all grommets and seals are properly seated to avoid leaks. Use the included components as a complete set for best results. Torque valve cover bolts to manufacturer specifications to prevent over-tightening or warping.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 904-401 valve cover gasket set undergoes rigorous quality control to ensure durability and reliability. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.