Dorman Autograde Steel Cup Expansion Plug 19/32 In with 0.280 In Height for Chevrolet Oldsmobile Pontiac 555-009

Steel cup expansion plug 19/32 inch with 0.280 inch height for 1971 to 1977 Chevrolet Oldsmobile and Pontiac engines used to replace worn or leaking factory core plugs.

Built to meet the manufacturer's design intent for reliable service using quality steel materials engineered to match original equipment form fit and function for a secure seal in your engine block.

Key Features

• Constructed from durable steel for long lasting corrosion resistance
• Precise 19/32 inch diameter with 0.280 inch height specifications
• Direct replacement for original factory expansion plugs
• Validated through testing to ensure dependable performance
• Sold as a 10 piece pack for multiple replacement needs
• Matches OE part numbers including GM 3835577 and Chrysler 3451818

Benefits

• Stops coolant leaks caused by failed or corroded core plugs
• Restores proper sealing pressure to the engine cooling system
• Reduces risk of repeat repairs with robust material construction
• Ensures smoother installation with exact OE dimensions
• Provides cost effective solution compared to dealer parts
• Helps maintain optimal engine operating temperature

Application

Ideal for automotive technicians and DIY mechanics performing engine cooling system repairs or overhaul projects on classic GM and Chrysler vehicles requiring precise core plug replacement.

Fitment Notes

• Compatible with Chevrolet models from 1971 to 1977
• Compatible with Oldsmobile models from 1976 to 1977
• Compatible with Pontiac models from 1975 to 1977
• Verify engine block hole size before installation to ensure proper fit

Why Choose Dorman?

• Choosing Dorman aftermarket replacement parts is a smart way to restore your vehicle with confidence thanks to a strong focus on fit durability and dependable performance

What's in the Box

• 10 Piece pack of steel cup expansion plugs

Item Dimensions

• Package measures 3.2 inches by 2.4 inches by 1.5 inches
• Total package weight is 0.1 lbs