Dorman 550-007 Engine Rocker Arm Shaft End Plug
OE Quality 60-Day Returns
Dorman

Dorman 550-007 Engine Rocker Arm Shaft End Plug

Brand Dorman 550-007
Material Steel
Maximum Diameter 0.755
Minimum Diameter 0.755
Describe Type Concave
Package Contents 10 expansion plugs
Fits —

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

Steel construction. Built from quality material for reliable engine sealing performance.

Concave design. Helps the plug seat securely in the engine opening.

Cross-references 109544R1 and EP-3 for the same application. See all 2.

$21.00Free 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 $21.00
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Engine Rocker Arm Shaft End Plug options

Dorman 550-007 Engine Rocker Arm Shaft End Plug

Dorman 550-007 is a steel engine expansion plug built to match the fit and function of the original part on specified vehicles. Its concave design and 0.755-inch diameter support a precise seal in the engine hardware application, making it a practical OE-style replacement for engine service work.

Key Features

  • Steel construction for engine hardware durability
  • Concave profile for proper seating in the bore
  • 0.755-inch minimum and maximum diameter for consistent fit
  • Engine expansion plug design for sealing applications
  • Direct replacement part number 550-007 for service identification

Detailed Description

This Dorman engine rocker arm shaft end plug is engineered for vehicles that require a steel expansion plug with a 0.755-inch diameter and concave shape. It is designed to match the original part’s fit and function, helping restore the sealing point in the engine assembly. For buyers searching for a Dorman 550-007 engine rocker arm shaft end plug, this part provides a straightforward OE-style solution for engine hardware repair. This part cross-references Monroe Shocks & Struts (e.g., 109544R1, EP-3) for the same application.

What It Helps Address

  • Oil seepage at the rocker arm shaft end plug location
  • Loss of sealing integrity in the engine expansion plug bore
  • Wear or damage to the original steel plug
  • Service replacement needs during engine repair or rebuild work
  • Fitment concerns when replacing a worn Dorman 550-007 plug

Installation Notes and Tips

Verify the bore diameter before installation and confirm the plug matches the original concave profile and 0.755-inch specification. Clean the sealing surface thoroughly so the plug seats evenly. For vehicle-specific searches, confirm application details for make/model engine service requirements before ordering.

Quality Assurance

Dorman manufactures this part to match original fit and function on specified vehicles, using steel construction for dependable engine hardware service. For shoppers comparing engine rocker arm shaft end plug options for make/model repair work, Dorman 550-007 is built as a direct replacement component.

This part fits 0 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
109544R1EP-3