MG Duff CM852018Z Volvo Penta 852018 Zinc Bar Anode for 110/120 Sterndrive & 2-Blade Folding Propeller

MG Duff CM852018Z Volvo Penta 852018 Zinc Bar Anode for 110/120 Sterndrive & 2-Blade Folding Propeller

The MG Duff CM852018Z is a zinc sacrificial bar anode designed for compatible Volvo Penta 110/120, S-B and S-C sterndrive installations and Volvo Penta 2-blade folding propeller assemblies. It corresponds to Volvo Penta original part number 852018.

The anode provides sacrificial galvanic corrosion protection for electrically connected underwater metallic components. Manufactured from zinc, it is intended to corrode preferentially when correctly installed with suitable electrical continuity, helping reduce corrosion of the protected components.

The MG Duff CM852018Z measures 64 mm in length, 15 mm in width and 15 mm in height. It features one fixing hole with a diameter of 5 mm, a specified 4 mm stud size and weighs 0.05 kg (50 g).

Important: Two anodes are required per assembly. The CM852018Z is sold individually, so order a quantity of two when replacing both anodes on one assembly.

Technical Specifications

Volvo Penta Compatibility

The MG Duff CM852018Z is specified for the following Volvo Penta applications:

• Volvo Penta 110/120 sterndrives
• Volvo Penta S-B
• Volvo Penta S-C
• Volvo Penta 2-blade folding propeller assemblies

The corresponding Volvo Penta original part number is 852018. This reference can be used to identify the correct replacement anode.

Before ordering, confirm the original anode shape, mounting dimensions and compatibility with the specific sterndrive or folding propeller configuration.

Bar Anode Construction and Dimensions

The CM852018Z features a compact zinc bar body with a single fixing hole for mounting on the corresponding Volvo Penta assembly.

• Body length: 64 mm.
• Body width: 15 mm.
• Body height: 15 mm.
• Fixing holes: 1.
• Fixing hole diameter: 5 mm.
• Specified stud size: 4 mm.
• Weight: 50 g.

These specifications should be compared with the original anode and its mounting arrangement before installation.

Quantity Required per Assembly

Two MG Duff CM852018Z anodes are required per assembly. Each product unit contains one individual zinc bar anode.

For a complete replacement of both anodes on one compatible assembly, order 2 pieces. This quantity requirement should not be confused with the sales unit, which is one anode.

Zinc Sacrificial Corrosion Protection

Zinc is commonly used as a sacrificial anode material in saltwater marine corrosion protection systems.

When correctly installed with electrical continuity to the metallic components requiring protection, the zinc corrodes preferentially, helping reduce galvanic corrosion of the protected underwater parts.

The appropriate anode material should be selected according to the vessel's operating water conditions and Volvo Penta's recommendations.

Inspection and Replacement

Inspect the anodes periodically during routine sterndrive or folding propeller maintenance. Replace them when the sacrificial zinc material is significantly depleted, damaged or no longer securely attached.

Before fitting a replacement, check the mounting hole and fastening arrangement, inspect the contact surfaces and follow the applicable Volvo Penta installation instructions.

Part Numbers and References

• MG Duff: CM852018Z
• Volvo Penta OEM: 852018
• EAN: 0628309115227
• Required Quantity: 2 per assembly

Scope of Supply

1 × MG Duff CM852018Z Zinc Bar Anode.

Note: Two anodes are required per assembly and must be ordered separately.