Dorman 555-020 Engine Cylinder Head Plug

Reliable Engine Cylinder Head Plug for GM Vehicles

The Dorman 555-020 engine cylinder head plug is designed to provide a secure seal for your engine block. Made from durable steel, this cup type plug ensures a precise fit and long-lasting performance for various Buick, Chevrolet, Oldsmobile, and Pontiac models.

• Constructed from high-quality steel for strength and durability
• Closed end diameter of 1.12 inches and open end diameter of 1.135 inches for accurate fitment
• Cup type plug design for effective sealing
• Compatible with multiple GM vehicles including Camaro, Impala, and Bonneville
• Part number 555-020 ensures correct replacement part

Durable Steel Construction and Precise Dimensions

This engine cylinder head plug is manufactured from steel, providing resistance to heat and pressure commonly found in engine environments. The closed end diameter measures 1.12 inches, while the open end diameter is slightly larger at 1.135 inches, allowing for a secure and tight fit within the engine block. The cup type plug design helps maintain engine integrity by preventing leaks and contamination.

Compatible GM Vehicle Applications

The Dorman 555-020 cylinder head plug is compatible with a wide range of General Motors vehicles. It fits Buick models such as LeSabre and Century, Chevrolet vehicles including Camaro and Caprice, Oldsmobile models like Cutlass and Delta 88, and Pontiac vehicles such as Grand Prix and Firebird. This ensures that owners of these vehicles can rely on this part for proper engine maintenance.

Common Uses and Problem Resolution

• Seals engine block openings to prevent coolant or oil leaks
• Replaces worn or damaged cylinder head plugs
• Prevents contamination from entering the engine block
• Maintains proper engine pressure and performance
• Addresses issues related to engine overheating caused by leaks

Installation Notes and Tips

Before installation, ensure the engine block surface is clean and free of debris. Use appropriate tools to press the plug evenly into place without damaging the steel material. Verify the plug is fully seated to prevent leaks. It is recommended to inspect surrounding components for wear during replacement.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications. The 555-020 engine cylinder head plug undergoes quality checks to ensure durability and fitment accuracy. While specific warranty details may vary, Dorman typically offers limited warranties covering defects in material and workmanship.