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Polipodio 433580 / 5007089 OMC Johnson Evinrude 60–300 HP Transom Bar Anode – Zinc / Aluminium
The Polipodio OM018A and OM018AAL are sacrificial bar anodes designed for compatible O.M.C., Johnson and Evinrude outboard motors rated from 60 to 300 HP.
According to the manufacturer's catalogue, the anodes correspond to original replacement references 433580 and 5007089. They are available in two sacrificial materials: zinc (Polipodio OM018A) and aluminium (Polipodio OM018AAL).
The anode has an elongated bar configuration with recessed mounting positions at both ends. The supplied dimensional drawing identifies a 172 mm longitudinal measurement, a 23 mm end-view width and a 35 mm sectional height.
Both variants provide sacrificial galvanic corrosion protection for electrically connected metallic components exposed to water in compatible outboard propulsion systems.
Technical Specifications
Parameter Specification Manufacturer Enrico Polipodio Brand Polipodio Product Type Transom Bar Sacrificial Anode Compatible Manufacturers O.M.C. / Johnson / Evinrude Listed Engine Power Range 60–300 HP Original Replacement References 433580, 5007089 Available Materials Zinc, Aluminium Longitudinal Drawing Dimension 172 mm End-View Width 23 mm Sectional Height 35 mm Mounting Configuration Recessed fixing positions at both ends
Available Material Variants
Polipodio Reference Material Catalogue Article OM018A Zinc 2626221 OM018AAL Aluminium 2626221A
Both variants are listed with original references 433580 and 5007089. Select the sacrificial material according to the vessel's operating water conditions and the outboard manufacturer's recommendations.
OMC, Johnson and Evinrude Compatibility
The Polipodio bar anode is listed for compatible O.M.C., Johnson and Evinrude outboard motors from 60 to 300 HP.
- O.M.C.: Compatible 60–300 HP outboard applications
- Johnson: Compatible applications requiring this bar anode configuration
- Evinrude: Compatible applications requiring this bar anode configuration
Original replacement references:
- 433580
- 5007089
Specific engine models, production years and serial number ranges have not been supplied. The stated horsepower range does not imply universal compatibility with every outboard engine of that power rating.
Verify the original equipment part number and mounting geometry before ordering.
Transom Bar Dimensions and Mounting
The Polipodio OM018A / OM018AAL features an elongated sacrificial bar with mounting positions at both ends.
The manufacturer's drawing provides the following measurements:
- Longitudinal dimension: 172 mm
- End-view width: 23 mm
- Sectional height: 35 mm
- Mounting arrangement: Recessed fixing positions at both ends
The 172 mm dimension is shown along the main bar profile. The available drawing does not establish whether this measurement represents the complete overall length or a mounting-related dimension.
The fixing-hole diameters and complete fastening specifications have not been provided. Confirm the original mounting geometry before installation.
Zinc and Aluminium Sacrificial Corrosion Protection
The Polipodio bar anode is available in two sacrificial materials:
- Zinc – Polipodio OM018A: Commonly used for galvanic corrosion protection in suitable saltwater marine environments.
- Aluminium – Polipodio OM018AAL: Used in suitable saltwater and certain brackish-water corrosion protection systems.
When correctly installed with suitable electrical continuity to the metallic components requiring protection, the sacrificial anode material corrodes preferentially, helping reduce galvanic corrosion of electrically connected underwater components.
Select the appropriate material according to operating water conditions and the engine manufacturer's maintenance recommendations.
Polipodio and Trem Cross-References
The supplied catalogue information identifies the following related references:
Reference Description Polipodio OM018A Zinc bar anode Polipodio OM018AAL Aluminium bar anode 2626221 Zinc catalogue article 2626221A Aluminium catalogue article Trem L8147013 Zinc; model F-OMC-H Trem L8247013 Aluminium 433580 Original replacement reference 5007089 Original replacement reference
Trem Article Numbers and EAN
Trem Article Material Polipodio Reference EAN L8147013 Zinc OM018A 8024827645239 L8247013 Aluminium OM018A/AL 8024827645819
The Trem listings identify original replacement reference 5007089. Their EANs apply specifically to the corresponding Trem articles.
The Polipodio aluminium catalogue listing additionally provides EAN 8059617813543 for article 2626221A.
The available information associates these articles through their replacement references. Exact packaging and complete dimensional interchangeability between all listings should be verified where necessary.
Inspection and Replacement
Inspect the transom bar anode periodically during routine outboard maintenance. Replace it when the sacrificial material becomes significantly depleted, physically damaged or no longer securely mounted.
Before fitting a replacement:
- Confirm the O.M.C., Johnson or Evinrude engine model.
- Check original replacement reference 433580 or 5007089.
- Compare the elongated bar profile with the original anode.
- Verify the mounting positions and fastening arrangement.
- Check the manufacturer's specified dimensional measurements.
- Follow the applicable outboard manufacturer's installation instructions.
Scope of Supply
1 × Polipodio O.M.C. / Johnson / Evinrude Transom Bar Anode in the selected material:
- Polipodio OM018A – Zinc; or
- Polipodio OM018AAL – Aluminium.
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