Dorman 555-004 Engine Rocker Arm Shaft End Plug

Overview of Dorman Engine Rocker Arm Shaft End Plug 555-004

The Dorman 555-004 Engine Rocker Arm Shaft End Plug is designed for reliable performance in Ford, Isuzu, and Jeep vehicles, including models like the I-Mark, Pickup, Ranger, and Wagoneer. Crafted from durable steel, this cup-type expansion plug ensures a secure fit and long-lasting durability in engine hardware applications.

• Constructed from high-quality steel for strength and durability
• Cup-type design for effective sealing and secure placement
• Maximum diameter of 0.456 inches and minimum diameter of 0.438 inches for precise fitment
• Compatible with Ford I-Mark, Pickup, Ranger, and Jeep Wagoneer models
• Part number 555-004 for easy identification and replacement

Detailed Product Description

The Dorman 555-004 Engine Rocker Arm Shaft End Plug is engineered to meet the specifications required for proper engine rocker arm shaft sealing. Its steel construction provides resistance to wear and corrosion, essential for maintaining engine integrity. The cup-type design allows the plug to expand securely within the shaft end, preventing oil leaks and contamination. With diameters ranging from 0.438 to 0.456 inches, this plug fits precisely in the rocker arm shaft, ensuring consistent engine performance in Ford, Isuzu, and Jeep vehicles such as the I-Mark, Pickup, Ranger, and Wagoneer.

Common Applications and Problem Solving

• Prevents oil leaks at the rocker arm shaft end
• Eliminates contamination entry into the engine rocker arm assembly
• Maintains proper oil pressure within the rocker arm shaft
• Replaces worn or damaged end plugs to restore engine function
• Addresses issues related to engine noise caused by loose or missing plugs

Installation Notes and Tips

• Ensure the rocker arm shaft end is clean and free of debris before installation
• Verify the plug diameter matches the shaft specifications (0.438 to 0.456 inches)
• Use appropriate tools to press the cup-type plug evenly into place without deformation
• Inspect the plug after installation for a secure and flush fit
• Consult vehicle service manual for torque specifications and installation procedures

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable fit and function. The 555-004 Engine Rocker Arm Shaft End Plug undergoes quality inspections to ensure durability and performance. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship to support long-term use in Ford, Isuzu, and Jeep vehicles.