Dorman 565-077 Engine Expansion Plug
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Dorman

Dorman 565-077 Engine Expansion Plug

Brand Dorman 565-077
Attachment Type Press Fit
Closed End Diameter 1.5 in
Color Gold
Depth 0.22
Describe Type Cup Type
Material Brass
Open End Diameter (in) 1.5 in
Package Contents Expansion Plug
Fits Mercury · 1 vehicle

OE-style fit. Matches the original part's function for a straightforward replacement.

Brass construction. Built from quality material for reliable performance.

Press-fit design. Installs securely as a cup-type engine expansion plug.

Cross-references EPC-133-B for the same application. See all 1.

$49.27Free shipping
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Order total $49.27
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Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Expansion Plug options

Dorman 565-077 Brass Engine Core Plug

Dorman 565-077 is a brass, cup-type engine expansion plug built to match the fit and function of the original part on specified vehicles. Its press-fit design and 1.5 in. diameter help support a secure seal in the engine block where a replacement core plug is needed.

Key Features

  • Brass construction for durable engine service
  • Cup-type design with press-fit attachment
  • 1.5 in. closed-end diameter and 1.5 in. open-end diameter
  • Gold finish
  • Engineered as an OE-style replacement for specified applications

Detailed Description

This engine core plug is made to match the original part’s fit and function on selected vehicles. Dorman 565-077 uses a brass cup-type design with a 0.22 depth, making it a direct-style solution for sealing engine block openings where a press-fit expansion plug is required. For fitment-based searches, this part is listed for 1987 Mercury Lynx applications, and the catalog note identifies it with transmission drain plug service in boxed packaging. Dorman 565-077 also cross-references EPC-133-B for the same application.

What It Helps Address

  • Leaking or corroded engine core plugs
  • Loss of coolant from a worn expansion plug seal
  • Replacement needs during engine service or rebuild work
  • Fitment issues caused by damaged original press-fit plugs

Installation Notes and Tips

Confirm the required diameter and cup-type profile before installation. Clean the sealing surface thoroughly so the press-fit plug seats evenly, and verify the opening matches the 1.5 in. size listed for Dorman 565-077. For 1987 Mercury Lynx service, match the application details in the catalog notes before installation.

Quality Assurance

Dorman manufactures this engine expansion plug to match original part fit and function using quality materials for reliable performance. The brass construction supports consistent service in engine applications where a properly seated core plug is required.

This part fits 1 vehicle
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1987MercuryLynx1.9LL4N/AFitment Note: Quantity of 10 Transmission Drain Plugs in Boxed Packaging.
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
EPC-133-B