T21A Large Teardrop Hull Anode – Aluminum Sacrificial Hull Anode
T21A Large Teardrop Hull Anode – Aluminum Sacrificial Hull Anode
Infographic highlighting the superiority of aluminum anodes with icons and text on a white background.
Comparison chart between Aluminum and Zinc for water types and hull compatibility.
Diagram explaining how anodes work to prevent galvanic corrosion on boats.

T21A Large Teardrop Hull Anode – Aluminum Sacrificial Hull Anode

$10.57 Sale

Protect your boat's underwater metals from galvanic corrosion with the T21A Large Teardrop Hull Anode. Manufactured from Performance Metals Navalloy® aluminum alloy, this marine anode delivers dependable corrosion protection for hull-mounted applications in saltwater, brackish water, and freshwater environments.

Designed as a replacement for T-21 zinc anodes, the T21A provides the advantages of aluminum anode technology while featuring the exclusive patented Red Spot® wear indicator for quick and easy inspection.

Key Features

  • Replaces T-21 zinc hull anodes
  • Protects underwater metals from galvanic corrosion
  • Manufactured from Navalloy® aluminum alloy to MIL-DTL-24779 specifications
  • Suitable for use in saltwater, brackish water, and freshwater
  • Features the patented Red Spot® wear indicator
  • Lightweight design with high corrosion protection capacity
  • Ideal for hull-mounted marine corrosion protection
  • Do not mix aluminum and zinc anodes on the same vessel

Specifications

  • Material: Navalloy® Aluminum Alloy
  • Style: Teardrop Hull Anode
  • Weight: 0.25 lbs (0.1 kg)
  • Zinc Equivalent Weight (ZEW): 0.7 lbs (0.3 kg)
  • Water Compatibility: Salt, Brackish, and Fresh Water

Includes

  • T21A Large Teardrop Hull Anode

Back to Hull Anodes