Dorman Products

Dorman 550-007 Expansion Plug

In stock
SKU: 591|550007
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Not sure it fits? Message Year/Make/Model/Engine (2WD/4WD if applicable) and we’ll help confirm compatibility.
Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
$12.41
Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.

Product details

  • SKU 591|550007
  • Barcode 19495550075

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Description

Product Description

This engine expansion plug is designed to match the fit and function of the original part on specified vehicles. Made of quality materials, it is engineered for reliable performance.

  • Direct replacement - this engine expansion plug matches the fit and function of the factory part on specified years, makes and models
  • Ideal solution - this plug is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction - this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality - backed by team of product experts in the United States and more than a century of automotive experience

Detailed Applications

Year Make Model Configuration Positions Application Notes
1980 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1980 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1979 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1979 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1978 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1978 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1977 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1977 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1976 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1976 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1975 International 150 2 Required; 3/4 In.
1975 International MS 2 Required; 3/4 In.
1975 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1975 International Scout II V8 345 5.6L 2 Required; 3/4 In.
1975 International Scout II V8 392 6.4L 2 Required; 3/4 In.
1974 International 100 2 Required; 3/4 In.
1974 International 200 2 Required; 3/4 In.
1974 International MHC1310 V8 304 5.0L 2 Required; 3/4 In.
1974 International MHC1310 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1974 International MS1210 V8 304 5.0L 2 Required; 3/4 In.
1974 International MS1210 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1974 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1974 International Scout II V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International 1010 V8 304 5.0L 2 Required; 3/4 In.
1973 International 1010 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International 1110 V8 304 5.0L 2 Required; 3/4 In.
1973 International 1110 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International 1210 V8 304 5.0L 2 Required; 3/4 In.
1973 International 1210 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International 1310 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International MS1210 V8 304 5.0L 2 Required; 3/4 In.
1973 International MS1210 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1973 International Scout II V8 304 5.0L 2 Required; 3/4 In.
1973 International Scout II V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International 1010 V8 304 5.0L 2 Required; 3/4 In.
1972 International 1010 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International 1110 V8 304 5.0L 2 Required; 3/4 In.
1972 International 1110 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International 1210 V8 304 5.0L 2 Required; 3/4 In.
1972 International 1210 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International 1310 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International M1100 V8 304 5.0L 2 Required; 3/4 In.
1972 International M1100 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International M1200 V8 304 5.0L 2 Required; 3/4 In.
1972 International M1200 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International M800 Post Office V8 304 5.0L 2 Required; 3/4 In.
1972 International M800 Post Office V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International MS1210 V8 304 5.0L 2 Required; 3/4 In.
1972 International MS1210 V8 304 5.0L (4982cc) 2 Required; 3/4 In.
1972 International Scout II V8 304 5.0L 2 Required; 3/4 In.
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Product Specifications

Describe Type: Concave
Material: Steel
Maximum Diameter: 0.755 in
Minimum Diameter: 0.755 in
Package Contents: 10 Expansion Plugs
Packaging Type: Box
Package Quantity: 10
Brand: Dorman - AutoGrade - Boxed

OE Numbers

DIRECT OE CROSS
109544-R1 NAVISTAR
172531 NAVISTAR