Federal Mogul E478X150MM Expansion Plug 150mm Steel Core Freeze Plug

The Federal Mogul E478X150MM is a 150mm steel expansion plug, also commonly known as a freeze plug or core plug. Engineered to seal core sand casting holes in engine blocks and cylinder heads, this plug provides a reliable, long-lasting seal against coolant leaks in demanding automotive, marine, and industrial engine applications.

Federal-Mogul, now a Tenneco brand, manufactures expansion plugs to strict OEM tolerances, ensuring proper fit and corrosion resistance. The cup-style design allows for controlled expansion upon installation, creating a pressure-tight seal within the bore.

Key Features:

• 150mm diameter cup-style expansion plug
• Steel construction for durability and corrosion resistance
• Engineered to OEM specifications for precise fit
• Seals core holes in engine blocks and cylinder heads
• Suitable for automotive, marine, and industrial engine applications
• Part of Federal-Mogul's trusted engine component line

The E478X150MM expansion plug is a direct-replacement core plug designed for large-bore engine applications. Proper installation with a suitable sealant ensures a leak-free, long-service-life seal in your engine's cooling system passages.