#10 Port Plug Ano-Tuff

The #10 Port Plug Ano-Tuff from EARLS is a critical sealing component for marine plumbing systems, cooling lines, and fuel transfer applications on boats and watercraft. If you've spent time troubleshooting leaks in engine compartments or rigging custom marine systems, you know that a single failed port plug can compromise an entire installation or create dangerous fluid weeping during operation. This compact aluminum fitting serves as a reliable blanking solution for unused port openings, preventing contamination, air ingestion, and fluid loss in demanding saltwater and freshwater environments.

Constructed from anodized aluminum with EARLS' proprietary Ano-Tuff treatment, this #10 port plug delivers superior corrosion resistance in harsh marine conditions where brass alternatives deteriorate rapidly. The anodizing process creates a hard, sealed oxide layer that protects against saltwater intrusion, UV degradation, and electrolytic corrosion—critical factors for boats stored in coastal environments or subject to extended immersion. The #10 sizing accommodates standard -10 AN (JIC) port configurations, ensuring compatibility with most OEM and aftermarket marine cooling, fuel, and hydraulic systems. Lightweight at just 0.05 lbs, it adds negligible weight while providing bulletproof reliability in high-vibration engine compartments.

Marine technicians and serious DIY boaters rely on the #10 Port Plug Ano-Tuff when retrofitting engines, upgrading cooling systems, or decommissioning unused manifold ports. Whether you're installing a new raw-water circuit, isolating a redundant fuel line, or sealing an intake port during engine work, this fitting eliminates guesswork and prevents costly mid-season failures. Installation is straightforward—hand-tighten into any -10 AN threaded port—and the compact 2.6 x 0.85 x 2.8 inch footprint fits tight engine bay layouts without interfering with hoses, belts, or adjacent fittings. Keep several on hand for emergency repairs, system modifications, and seasonal maintenance.