MG Duff 76214-4 Mercury MerCruiser Bravo III 2004+ Round Plate Anode Ø91 mm

MG Duff CM762144 Mercury 76214-4 MerCruiser Bravo III 2004+ Round Plate Anode Ø91 mm – Zinc / Aluminium

The MG Duff CM762144Z and CM762144A are circular flat plate sacrificial anodes designed for compatible MerCruiser Bravo III (Bravo 3) sterndrives manufactured from 2004 onwards. The anodes are intended for installation above the propeller and correspond to Mercury part reference 76214-4.

The supplied compatibility information specifies a drive serial number range beginning at 0M179452. Confirm the exact serial number and original anode configuration before ordering.

Two materials are available: zinc (CM762144Z) and aluminium (CM762144A). Both anodes measure 91 × 91 × 24 mm and have one recessed, unthreaded fixing hole measuring 13 mm in diameter.

The zinc version weighs 0.31 kg, while the aluminium version weighs 0.13 kg. Both provide sacrificial galvanic corrosion protection for electrically connected underwater metallic components.

Technical Specifications

Available Material Variants

Both versions have the same specified body dimensions and fixing-hole configuration. The weight difference reflects the different sacrificial materials.

MerCruiser Bravo III Compatibility

The MG Duff CM762144 series is listed for:

• MerCruiser Bravo III (Bravo 3)
• Production year: 2004 onwards
• Serial number reference: 0M179452 and later
• Mercury part reference: 76214-4

The anode is designed for mounting above the propeller on the corresponding drive assembly.

Compatibility should be verified using the original Mercury part number, sterndrive serial number and mounting arrangement. Do not assume interchangeability with other Mercury circular plate anodes that have different dimensions or threaded mounting holes.

Circular Plate Dimensions and Mounting

The CM762144 series features a circular sacrificial anode body with one recessed, unthreaded mounting hole.

• Length: 91 mm
• Width: 91 mm
• Height: 24 mm
• Number of fixing holes: 1
• Fixing-hole diameter: 13 mm
• Fixing-hole type: Recessed and unthreaded

Important: The fixing hole is unthreaded. The 13 mm dimension refers to the hole diameter and must not be interpreted as a thread specification.

The supplied information does not confirm the mounting bolt specification or whether fastening hardware is included.

Difference Between CM762144 and CM762145

The MG Duff CM762144 series must be distinguished from other similar circular plate anodes, including the CM762145 series.

These mounting differences are important when identifying the correct replacement. Select the anode according to the original part number and fixing-hole configuration.

Zinc and Aluminium Sacrificial Corrosion Protection

The MG Duff CM762144 series is available in two materials:

• Zinc – CM762144Z: Weighs 0.31 kg and is commonly used for galvanic corrosion protection in saltwater marine environments.
• Aluminium – CM762144A: Weighs 0.13 kg and is used in suitable marine corrosion protection systems, including saltwater and certain brackish-water conditions.

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

Select the appropriate material according to the operating water conditions and Mercury / MerCruiser recommendations.

Inspection and Replacement

Inspect the circular plate anode periodically during routine Bravo III sterndrive maintenance. Replace it when the sacrificial material becomes significantly depleted, damaged or no longer securely attached.

Before installation:

• Confirm that the drive is a compatible Bravo III configuration.
• Verify the serial number against the stated application range.
• Check the original Mercury part reference 76214-4.
• Confirm the 91 × 91 × 24 mm body dimensions.
• Verify the recessed, unthreaded 13 mm fixing hole.
• Inspect the mounting surfaces and follow the applicable MerCruiser maintenance instructions.

Part Numbers and Cross-References

• MG Duff Zinc: CM762144Z
• MG Duff Aluminium: CM762144A
• Mercury Reference: 76214-4
• Compatible Drive: Bravo III 2004+
• Serial Number Reference: 0M179452+
• Zinc Weight: 0.31 kg
• Aluminium Weight: 0.13 kg

Scope of Supply

1 × MG Duff MerCruiser Bravo III Circular Plate Anode in the selected material:

• CM762144Z – Zinc; or
• CM762144A – Aluminium.

Mounting hardware inclusion is not confirmed in the supplied specifications.