Dorman 555-006 Engine Core Plug
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Dorman

Dorman 555-006 Engine Core Plug

Brand Dorman 555-006
Material Steel
Maximum Diameter 0.508
Minimum Diameter 0.495
Describe Type Cup type
Package Contents Expansion plug
Fits INFINITI and Nissan · 37 vehicles

OE-style fit. Matches the original part's function for dependable engine sealing.

Steel construction. Built from quality material for reliable performance.

Cup-type design. A practical engine expansion plug for core sealing applications.

Cross-references 1102112G00 and EPC-226 for the same application. See all 2.

$21.06Free shipping
In stock · usually ships same day before 1pm CST
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Dorman 555-006 Engine Expansion Plug

Dorman 555-006 is a steel cup-type engine expansion plug made to match the fit and function of the original plug on specified Nissan and INFINITI applications. It is built for engine block sealing where a shallow cup-style core plug is required, with dimensions that align to the listed OE-style fitment.

Key Features

  • Steel construction for engine hardware applications
  • Cup-type design for shallow cup-style core plug locations
  • Maximum diameter: 0.508 in.; minimum diameter: 0.495 in.
  • Direct-fit replacement for specified Nissan and INFINITI engines
  • Engineered to match original part fit and function

Detailed Description

This engine core plug is designed for vehicles that use a shallow cup-type expansion plug in the engine block. Dorman 555-006 provides an OE-style replacement solution for select Nissan Pathfinder, Nissan Maxima, Nissan D21, Nissan Pickup, Nissan Quest, Nissan 200SX, and 1998 INFINITI QX4 applications. It is a practical choice when replacing a leaking or corroded engine expansion plug and restoring proper sealing in the cooling system. This part cross-references OE numbers 1102112G00 and EPC-226 for the same application.

What This Part Helps Address

  • Coolant loss from a worn or corroded engine block plug
  • Seepage around a shallow cup-type core plug opening
  • Sealing issues during engine block service or rebuild work
  • Replacement needs for original expansion plugs on Nissan and INFINITI engines
  • Fitment concerns when an OE-style steel cup plug is required

Installation Notes and Tips

Verify the engine block opening size and plug style before installation. This part is specified for shallow cup-type applications, so confirm the original plug design matches the listed dimensions and vehicle fitment. Clean the bore thoroughly before installing the plug to help achieve a proper seal. For body fitment language, this part fits 1987-1998 Nissan Pathfinder, 1985-1994 Nissan Maxima, 1986-1994 Nissan D21, 1995 Nissan Pickup, 1993-1994 Nissan Quest, 1987-1988 Nissan 200SX, and 1998 INFINITI QX4.

Quality Assurance

Dorman designs this engine expansion plug to match original part fit and function using quality materials for reliable performance. It is built as a direct replacement for the listed applications and follows the dimensional requirements shown for the part.

This part fits 37 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1998INFINITIQX43.3LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1998NissanPathfinder3.3LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1997NissanPathfinder3.3LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1996NissanPathfinder3.3LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1995NissanPickup3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1994NissanQuest3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1993NissanQuest3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1992NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1992NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1992NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1991NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1991NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1991NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1990NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1990NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1990NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1989NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988Nissan200SX3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1988NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987Nissan200SX3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1987NissanPathfinder3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986NissanD213.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1986NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
1985NissanMaxima3.0LV6N/AShallow Cup Type; 12 Required; .500 In.; Package Quantity: 10; Dorman - AutoGrade - Boxed; Packaging Type: Box
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1102112G00EPC-226