CM40A Metric Streamlined Shaft Anode – 40mm Aluminum Sacrificial Shaft Anode

Protect your propeller shaft and underwater running gear from galvanic corrosion with the CM40A Metric Streamlined Shaft Anode. Manufactured from Performance Metals Navalloy® aluminum alloy, this marine shaft anode provides dependable corrosion protection in saltwater, brackish water, and freshwater environments.

Designed for 40 mm metric propeller shafts, the CM40A features a streamlined profile that helps minimize drag while delivering long-lasting corrosion protection. Its two-piece clamp-on design includes pressed-in nuts and captured bolts with plastic retaining washers for fast, secure installation. The exclusive patented Red Spot® wear indicator makes routine inspections quick and easy.

Key Features

• Designed for 40 mm metric propeller shafts
• Replaces X40 shaft anode
• Protects propeller shafts and underwater running gear from galvanic corrosion
• Streamlined design helps reduce drag
• Manufactured from Navalloy® aluminum alloy to MIL-DTL-24779 specifications
• Suitable for use in saltwater, brackish water, and freshwater
• Two-piece clamp-on design for easy installation
• Stainless steel mounting hardware included
• Pressed-in nuts and captured bolts with retaining washers simplify assembly
• Features the patented Red Spot® wear indicator

Specifications

• Material: Navalloy® Aluminum Alloy
• Application: Streamlined Shaft Anode
• Shaft Size: 40 mm (1.57")
• Weight: 1.28 lbs (0.58 kg)
• Water Compatibility: Salt, Brackish, and Fresh Water

Includes

• Two-piece metric shaft anode
• Stainless steel mounting hardware