The Protorque 1" Brass Cup Welch Plug (RBC10) is designed to provide a secure seal for engine block core holes, helping prevent coolant and oil leaks while maintaining engine reliability. Constructed from quality brass, it delivers excellent resistance to corrosion and harsh operating conditions, making it ideal for both routine maintenance and complete engine rebuilds.

Its precision-formed cup design ensures dependable fitment and sealing performance, helping protect critical engine components and maintain cooling system integrity. Suitable for professional workshops and DIY repairs, this welch plug is a practical solution for automotive engine servicing and restoration projects.

Note: Sold per piece.

Part number: RBC10