Dorman Autograde Steel Cup Engine Expansion Plug 1/2 Inch for 1985-1998 Nissan and 1998 Infiniti 555-006

Steel cup engine expansion plug for 1985 to 1998 Nissan and 1998 Infiniti vehicles used to replace leaking or corroded factory core plugs.

Built to meet the manufacturer's design intent for reliable service using quality steel materials engineered for durable performance in demanding engine environments.

Key Features

• Constructed from durable steel for long-lasting resistance to corrosion and pressure
• Precisely sized at 1/2 inch diameter with a 0.180 inch height for accurate fitment
• Designed as a direct replacement for original equipment manufacturer parts
• Compatible with specific Nissan and Infiniti engine blocks from 1985 to 1998
• Validated by product experts with over a century of automotive experience

Benefits

• Stops coolant leaks caused by failed or rusted expansion plugs
• Restores proper sealing integrity to the engine cooling system
• Reduces the risk of repeat repairs through robust material construction
• Ensures a smooth installation with OE-matching form and fit
• Provides a cost-effective solution compared to dealer-only parts
• Helps maintain optimal engine operating temperature by preventing fluid loss

Application

Ideal for mechanics and DIY enthusiasts repairing cooling system leaks on older Nissan and Infiniti models requiring a 1/2 inch steel cup plug to seal engine block openings.

Fitment Notes

• Fits select 1985-1998 Nissan models and 1998 Infiniti vehicles
• Replaces Nissan part number 1102112G00 and Pioneer EPC-226
• Verify engine block hole size before installation to ensure proper seal

Why Choose Dorman - Autograde?

• Dorman parts are engineered as direct-fit replacements designed to match OE form fit and function
• Built with quality materials and validated through testing to stand up to daily driving demands
• Backed by a team of product experts in the United States with extensive automotive knowledge

What's in the Box

• 10 pieces of steel cup expansion plugs

Item Dimensions

• Package measures 3.2 inches by 2.4 inches by 1.5 inches
• Total package weight is approximately 0.1 lbs