Dorman 570-004 Engine Intake Manifold Expansion Plug

Engine Intake Manifold Expansion Plug

Dorman 570-004 is an engine intake manifold expansion plug made from rubber for a direct-fit OE-style repair. It is built to match the original part’s fit and function on specified vehicles, helping restore a secure seal in the intake manifold.

Use this Dorman 570-004 expansion plug when servicing intake manifold openings on select Geo Prizm, Geo Storm, Chevrolet Camaro, Pontiac Firebird, Ford Tempo, and Mercury Topaz applications.

Key Features

• Rubber construction for sealing performance
• Quick-seal design for intake manifold service
• Engineered to match original fit and function
• Direct replacement for specified OE applications
• Fits select 1984-1997 vehicles across multiple makes and models

Detailed Description

This intake manifold expansion plug is designed for vehicles that use a rubber quick-seal style plug in the engine intake manifold. Dorman 570-004 follows the original part’s dimensions and function, making it a practical replacement for aging or damaged manifold plugs. It is a fitment-based solution for select 1989-1997 Geo Prizm, 1990-1993 Geo Storm, 1990-1992 Chevrolet Camaro, 1990-1992 Pontiac Firebird, 1984-1986 Ford Tempo, and 1984-1986 Mercury Topaz applications.

This part cross-references EZ-87 for the same application.

Common Repair Uses

• Replacing a cracked or hardened intake manifold plug
• Restoring a seal at an unused manifold opening
• Addressing vacuum leaks caused by deteriorated rubber
• Repairing intake manifold seepage from a worn expansion plug
• Servicing OE-style manifold openings on older GM and Ford vehicles

Installation Notes and Tips

Confirm the manifold opening size and application before installation. Clean the sealing surface thoroughly and inspect the surrounding intake manifold area for wear, corrosion, or damage that could affect the seal. Verify the vehicle’s year, make, and model against the listed fitment before ordering.

Quality Assurance

Dorman designs this replacement plug to match the fit and function of the original component on specified vehicles. It is manufactured from quality materials for reliable performance in intake manifold service.