Qualcast 97-100B Welch Plug Kit Engine Expansion Plug Set

The Qualcast 97-100B is a comprehensive Welch Plug Kit designed for engine repair and rebuilding applications. Also known as expansion plugs or freeze plugs, these essential components seal the core holes in engine blocks and cylinder heads.

Product Features:

• Produced from the highest quality steel in a wide variety of cup designs
• Available in standard cup, shallow cup, and concave cup configurations
• Brass or stainless steel materials recommended for marine, performance, or heavy duty applications
• Complete kit provides multiple plug sizes for comprehensive engine coverage
• Precision-manufactured for reliable sealing and long service life

Qualcast expansion plugs are engineered to provide dependable sealing performance in automotive, marine, and performance engine applications. Each kit contains an assortment of commonly needed plug sizes to facilitate complete engine rebuilds or repairs. The high-quality steel construction ensures durability and resistance to corrosion in demanding operating conditions.