Dorman Autograde Steel Cup Expansion Plug 1-1/2 Inch with 0.570 Inch Height for Buick Chevrolet Fiat GMC 555-027

Steel cup expansion plug 1-1/2 inch with 0.570 inch height for Buick 1976 Chevrolet 1972-1985 Fiat 1967-1983 and GMC 1982-1985 used to replace worn or leaking factory engine plugs.

Built to meet the manufacturer's design intent for reliable service using quality steel materials engineered to match original equipment specifications for a secure seal.

Key Features

• Constructed from durable steel for long-lasting performance
• Precise 1-1/2 inch diameter with 0.570 inch height
• Direct replacement for specified OEM part numbers
• Engineered to match OE form fit and function
• Sold as a 10-piece pack for multiple replacements
• Validated through testing for daily driving demands

Benefits

• Restores engine integrity by sealing coolant leaks effectively
• Reduces risk of repeat repairs with trustworthy quality
• Ensures smoother installation with direct-fit design
• Prevents overheating caused by failing expansion plugs
• Provides cost-effective solution compared to dealer parts
• Backed by over a century of automotive experience

Application

Ideal for mechanics and DIY enthusiasts repairing engine cooling systems on vintage Buick Chevrolet Fiat and GMC vehicles requiring precise 1-1/2 inch cup plugs to stop leaks and maintain proper pressure.

Fitment Notes

• Compatible with Buick 1976 models
• Compatible with Chevrolet 1972-1985 models
• Compatible with Fiat 1967-1983 models
• Compatible with GMC 1982-1985 models
• Replaces General Motors part 94023985 and Pioneer EPC-85

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form fit and function helping ensure a smoother installation and reliable results.

What's in the Box

• 10 Piece Expansion Plug Set

Item Dimensions

• 4.9 inches x 3.6 inches x 2.2 inches
• Weight: 0.7 lbs