Dorman 565-018 Engine Intake Manifold Expansion Plug

Brand Dorman 565-018
Material Brass
Maximum Diameter 1.018
Minimum Diameter 1.007
Attachment Type Cup type
Package Contents Expansion plug
Fits Ford and Mercury · 62 vehicles

OE-style replacement. Matches the fit and function of the original part.

Brass construction. Built from quality material for reliable performance.

Cup type design. An expansion plug made for intake manifold service.

Cross-references EPC-16-B for the same application. See all 1.

$40.80Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $40.80
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Dorman 565-018 Engine Intake Manifold Expansion Plug

Dorman 565-018 is an engine intake manifold expansion plug built to match the fit and function of the original part on specified vehicles. This brass, cup-type plug is sized for a precise seal in the intake manifold and is a direct replacement for applications that call for a 1-inch shallow cup design.

  • Brass construction for dependable corrosion resistance
  • Cup-type attachment for a secure intake manifold seal
  • Maximum diameter: 1.018 in.; minimum diameter: 1.007 in.
  • Direct replacement for specified Ford and Mercury applications
  • Cross-reference: EPC-16-B

Fitment and Application Details

Compatible with a wide range of classic Ford and Mercury vehicles, including Fits 1967-1973 Ford Mustang, N/A and Fits 1968-1974 Ford Bronco, N/A. It also fits Fits 1978-1983 Ford Fairmont, N/A, Fits 1979-1982 Ford Mustang, N/A, and Fits 1980-1982 Ford Thunderbird, N/A. Additional coverage includes Fits 1969-1970 Ford E-100 Econoline, N/A, Fits 1983 Ford LTD, N/A, and Fits 1983 Mercury Marquis, N/A.

This Dorman 565-018 intake manifold expansion plug is also listed for Fits 1968-1974 Mercury Montego, N/A, Fits 1975-1980 Mercury Monarch, N/A, Fits 1978-1983 Mercury Zephyr, N/A, Fits 1979-1982 Mercury Capri, N/A, and Fits 1980-1982 Mercury Cougar, N/A.

What This Part Helps Address

  • Intake manifold coolant or vacuum leakage at the expansion plug opening
  • Worn, corroded, or damaged original brass plug
  • Improper sealing from a plug that no longer holds diameter
  • Service replacement needs on Ford and Mercury intake manifolds
  • Restoration work on classic Mustang, Bronco, and related platforms

Installation Notes and Tips

Verify the intake manifold opening size before installation and compare the original plug style to the cup-type design. Clean the bore thoroughly so the brass plug seats evenly, and confirm the application matches the vehicle year, make, and model before service. For best results, install on a cool engine and inspect the seal after startup.

Quality Assurance

Dorman manufactures this expansion plug as an OE-style replacement engineered to match original fit and function on listed vehicles. The brass construction and application-specific sizing support consistent service on the specified Ford and Mercury platforms.

This part fits 62 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1983FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1983FordLTD3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1983MercuryMarquis3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1983MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982FordThunderbird3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982MercuryCapri3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982MercuryCougar3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1982MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981FordThunderbird3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981MercuryCapri3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981MercuryCougar3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1981MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980FordThunderbird3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980MercuryCapri3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980MercuryCougar3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1980MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1979FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1979FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1979MercuryCapri3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1979MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1979MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1978FordFairmont3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1978MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1978MercuryZephyr3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1977MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1977MercuryMonarch3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1976MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1976MercuryMonarch3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1975MercuryMonarch4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1975MercuryMonarch3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1974FordBronco3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1974MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1973FordBronco3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1973FordMustang4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1973MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1972FordBronco2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1972FordMustang4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1972MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1971FordBronco2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1971FordMustang4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1971MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1970FordBronco2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1970FordE-100 Econoline2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1970FordMustang4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1970FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1970MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1969FordBronco2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1969FordE-100 Econoline2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1969FordMustang4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1969FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1969MercuryMontego4.1LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1968FordBronco2.8LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1968FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1968MercuryMontego3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
1967FordMustang3.3LL6N/A6 Required; 1 In. Brass Shallow Cup; Package Quantity: 10; Dorman - AutoGrade - Boxed
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
EPC-16-B