Earl's Performance Aluminum NPT Plugs

Earl's Performance Aluminum NPT Plugs are precision-machined plumbing components designed to seal off unused NPT-threaded ports in racing, performance, and custom fluid system builds. Trusted by engine builders, fabricators, and performance enthusiasts for over five decades, Earl's delivers the quality and reliability that demanding motorsport and custom applications require.

Machined from lightweight aluminum and finished with an anodized coating for corrosion resistance and a clean, professional appearance, these plugs provide a dependable seal wherever an NPT port needs to be capped. The standard NPT tapered thread form creates a reliable mechanical seal when used with PTFE tape or thread sealant, making them suitable for fuel, oil, coolant, hydraulic, and general plumbing applications.

Key Features:

• Precision Machined Aluminum Construction — Consistent thread form and reliable fitment across all NPT port sizes
• Anodized Finish — Durable corrosion protection for use in harsh fluid environments
• Lightweight Design — Reduces overall system weight without compromising sealing integrity
• NPT Tapered Thread Form — Compatible with standard NPT ports; use PTFE tape or thread sealant for a secure, leak-free installation
• Multiple Driver Styles Available — Hex head and internal Allen head options to suit different installation access requirements
• Multiple Anodized Color Finishes — Coordinate with your existing plumbing system for a professional, finished look
• Broad Application Compatibility — Suitable for fuel, oil, coolant, hydraulic, and general custom plumbing systems
• Made in the USA — Built to Earl's exacting manufacturing standards

Whether blocking off unused ports on an engine block, intake manifold, or custom fabrication, Earl's Aluminum NPT Plugs deliver the professional finish and dependable sealing performance your build demands. Available in a range of NPT thread sizes, driver styles, and anodized color options to suit virtually any plumbing application.