Enginetech PK16B Brass Expansion Plug Kit for GM Pontiac Engines

The Enginetech PK16B is a brass expansion plug kit designed for General Motors (GM) and Pontiac engines. Expansion plugs — also commonly known as freeze plugs, core plugs, or welsh plugs — seal the casting holes left in engine blocks and cylinder heads during the manufacturing process. Over time, these plugs can corrode, leak, or fail, making replacement essential to maintaining proper coolant retention and engine integrity.

Key Features:

• Brass construction for superior corrosion resistance compared to steel alternatives
• Precision-manufactured to OEM dimensions for a secure, leak-free fit
• Designed specifically for GM and Pontiac engine applications
• Helps restore proper coolant system integrity
• Kit format provides all necessary plugs for a complete engine rebuild or freeze plug replacement job

The Enginetech PK16B is an ideal choice for engine rebuilders and professional technicians performing complete engine overhauls or targeted freeze plug replacements on GM and Pontiac vehicles. Brass plugs are widely preferred in the automotive aftermarket for their longevity and resistance to the electrochemical corrosion that commonly affects steel plugs in mixed-metal cooling systems.