#10 Port Plug

The #10 Port Plug by EARLS is a precision-engineered hydraulic fitting designed to seal and close unused 10 AN ports on fluid distribution systems. Whether you're building a custom hydraulic circuit, modifying an OEM cooling or fuel system, or completing a fuel rail assembly, this aluminum port plug provides a clean, reliable closure for unused connection points. It's an essential component for any technician or enthusiast working with high-performance automotive, racing, or industrial hydraulic applications where port integrity and system cleanliness are non-negotiable.

Constructed from aluminum with blue anodized finish, this #10 Port Plug features an O-ring sealed design that prevents fluid leakage while protecting against contamination ingress. The hex head configuration allows secure installation and removal using standard wrenches, and the integrated O-ring creates a positive seal without additional sealing compound. Aluminum construction keeps weight minimal while maintaining strength and corrosion resistance—the anodized finish provides enhanced durability in aggressive underhood environments where moisture and chemical exposure are common.

Engineers, fabricators, and performance builders rely on EARLS port plugs to complete custom fuel systems, intercooler circuits, transmission coolers, and oil cooling lines. Compatibility with 10 AN hose and port sizes makes this fitting a universal choice across domestic and import platforms. Installation is straightforward—simply thread into the unused AN port and tighten to snug, allowing the O-ring to seat for immediate leak-free operation. Stock this essential fitting in your shop or vehicle toolkit for emergency repairs or system modifications.