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Expansion Plugs [2.110 in. Diameter, 0.296 in. Depth, Brass]
InfoVehicle Info Needed
MELLINGPART NUMBER: 689-MPS-78B

Expansion Plugs [2.110 in. Diameter, 0.296 in. Depth, Brass]

$2599
ShippingShips on 11/17/2026
Lowest PriceLowest Price Guarantee

Stock Replacement Expansion Plug
  • 2.091-2.110 in. (53-54 mm) Diameter
  • 0.296 in. (8 mm) Depth
  • Press Fit Installation
  • Brass
  • Gold Finish
  • Set of 10

    Sized at 2.110 in. in diameter, these Melling brass expansion plugs press into the block or head to close off casting core holes and keep coolant inside the engine.

    Melling MPS-78B Expansion Plug Features:

    • 2.091-2.110 in. (53-54 mm) diameter
    • 0.296 in. (8 mm) depth
    • Press fit installation
    • Brass construction
    • Gold finish
    • Bulk pack of 10 plugs
    • Precision engineered for optimum fit and function
    • Meets or exceeds original equipment specifications
    • Part TypeExpansion Plug
    BrandMELLING
    Package Width0.98
    Weight0.98 PG
    Part CategoryReplacement Parts
    Minimum Diameter2.091 in
    ColorGold
    Attachment TypePress Fit
    QuantitySet of 10
    Maximum Diameter2.110 in
    MaterialBrass
    Part FitmentUniversal
    Depth0.296 in
    Vendor Part NumberMPS-78B
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning