MG Duff CM69L4537100Z Yamaha 200 / 225 / 250 / 300 HP Skeg Trim Tab Zinc Anode Ø99 × 91 mm

MG Duff CM69L4537100Z Yamaha 200 / 225 / 250 / 300 HP Skeg Trim Tab Zinc Anode Ø99 × 91 mm

The MG Duff CM69L4537100Z is a zinc sacrificial skeg trim tab anode designed for compatible Yamaha 200, 225, 250 and 300 HP outboard motors. It is intended for saltwater applications and provides sacrificial galvanic corrosion protection for electrically connected underwater metallic components of the propulsion system.

The anode measures 99 mm in outside diameter and 91 mm in height, with an M10 × 1.25 mounting thread. Its specified weight is 0.52 kg (520 g).

Technical Specifications

Yamaha Outboard Compatibility

The MG Duff CM69L4537100Z is listed for compatible Yamaha outboard motors with the following power ratings:

• Yamaha 200 HP
• Yamaha 225 HP
• Yamaha 250 HP
• Yamaha 300 HP

Specific Yamaha engine models, production years and original equipment part numbers have not been supplied. Engine horsepower alone does not confirm compatibility with every outboard configuration.

Before ordering, compare the original trim tab dimensions and mounting thread with the replacement anode.

Skeg Trim Tab Dimensions and Mounting

The CM69L4537100Z features a skeg-style sacrificial anode body with the following dimensions:

• Outside diameter: 99 mm
• Height: 91 mm
• Mounting thread: M10 × 1.25
• Weight: 0.52 kg

The M10 × 1.25 designation specifies a metric thread with a nominal diameter of 10 mm and a pitch of 1.25 mm.

Confirm the original trim tab geometry, available mounting clearance and thread specification before installation.

Zinc Sacrificial Corrosion Protection

The MG Duff CM69L4537100Z is manufactured from zinc, a sacrificial anode material commonly used for galvanic corrosion protection in saltwater marine environments.

When correctly installed with suitable electrical continuity to the metallic components requiring protection, the zinc corrodes preferentially, helping reduce galvanic corrosion of electrically connected underwater outboard components.

The suitability of zinc should be confirmed according to the vessel's operating water conditions and Yamaha's maintenance recommendations.

Inspection and Replacement

Inspect the skeg trim tab anode periodically during routine Yamaha outboard maintenance. Replace it when the zinc becomes significantly depleted, physically damaged or no longer securely attached.

Before fitting a replacement:

• Confirm the Yamaha outboard model and power rating.
• Compare the replacement with the original skeg trim tab.
• Verify the 99 mm outside diameter.
• Check the 91 mm height.
• Confirm the M10 × 1.25 mounting thread.
• Follow the applicable Yamaha installation instructions.

Part Number and Product Identification

• MG Duff Part Number: CM69L4537100Z
• Material: Zinc
• Compatible Manufacturer: Yamaha
• Listed Applications: 200 / 225 / 250 / 300 HP
• Product Type: Skeg / Trim Tab Anode
• Dimensions: Ø99 × 91 mm
• Mounting Thread: M10 × 1.25
• Weight: 0.52 kg

Scope of Supply

1 × MG Duff CM69L4537100Z Yamaha Skeg Trim Tab Zinc Anode.

Mounting hardware inclusion is not confirmed in the supplied product specifications.