Mercury Replacement Aluminum Anode 31640T4 for Select Mercury/Mariner 30-200hp Outboards and MerCruiser Drives Mercury Outboard Parts > FourStroke Outboard Maintenance > 350 - 400 HP Verado L6 > Tune Up Parts Threaded top - Requires Knobs

Threaded top - Requires Knobs (Sold Separately)

Inbuilt Emergency Light (if externally mounted) - A high-power emergency Red light will illuminate

Constructed of corrosion-resistant tin-plated Copper and ABS with a polycarbonate cover

Ultra-strong 2” nylon webbing waist belt

Mercury Replacement Aluminum Anode 31640T4 for Select Mercury/Mariner 30-200hp Outboards and MerCruiser Drives Mercury Outboard Parts > FourStroke Outboard Maintenance > 350 - 400 HP Verado L6 > Tune Up Parts Threaded top - Requires KnobsMercury Replacement Aluminum Anode 31640T4 for Select Mercury Mariner 30 200hp Outboards and MerCruiser Drives OEM replacement part. Designed to replace Mercury Marine part number 31640T4. Perfect for restoring your MerCruiser system with a factory original fit. Mercury Replacement Aluminum Anode 31640T4 is a sacrificial anode that inhibits galvanic corrosion, protecting your engine from damage in both fresh and saltwater applications.