Qualcast 97-59 Engine Expansion Plug Freeze Plug

Qualcast 97-59 is an engine expansion plug (also known as a freeze plug, Welsh plug, or core plug) from QualCast, a worldwide distributor of precision engine components. QualCast expansion plugs are manufactured from high-quality steel and are engineered to meet or exceed OEM specifications.

Key Features:

• High-quality steel construction for long-lasting durability
• Precision stamped or machined to exacting tolerances
• Available finish options include zinc, copper, and black oxide for extended service life
• Meets or exceeds original equipment material specifications
• Designed to seal engine block core holes and maintain proper coolant containment

QualCast (part number 97-59) is part of QualCast's comprehensive expansion plug line, which covers a wide variety of cup designs for light duty, medium duty, heavy duty, agricultural, marine, and industrial applications. QualCast is headquartered in Nashville, Tennessee and is a trusted supplier to engine builders and machine shops worldwide.