Expansion Plugs 10pk - Brass 1-3/8 Dia

The Pioneer Expansion Plugs 10-pack in Brass with a 1-3/8-inch diameter are essential components for engine block repair and restoration. These plugs are ideal for automotive enthusiasts and professionals working on engine rebuilds, custom modifications, or routine maintenance. They effectively seal the factory core holes where coolant passages intersect, preventing leaks and ensuring optimal engine performance.

Manufactured from high-quality brass, these expansion plugs provide excellent corrosion resistance in wet coolant environments. The design allows for a watertight seal when properly installed, which is crucial for maintaining engine integrity under high-temperature and high-pressure conditions. The installation process is straightforward, requiring the appropriate tools and torque specifications to achieve a secure fit.

Engine builders, machine shops, and DIY enthusiasts will find these plugs invaluable for ground-up restorations or when increasing engine displacement. With a convenient 10-pack, you have enough plugs for a complete engine build or as backup stock for future projects. Their design ensures easy removal and replacement during subsequent rebuilds, making them a practical choice for any engine repair task.