Tecnoseal 6K1-45371-01 / 6K1-45371-02 Yamaha 150–200 HP Counter Rotation Trim Tab Anode

Tecnoseal 6K1-45371-01 / 6K1-45371-02 Yamaha 150–200 HP Counter Rotation Trim Tab Anode

The Tecnoseal 01134 series consists of sacrificial trim tab anodes designed for Yamaha 150–200 HP outboard motors with counter rotation. Corresponding to Yamaha OEM part numbers 6K1-45371-01 and 6K1-45371-02, these replacement anodes help protect submerged metallic components of compatible Yamaha outboard lower units against galvanic corrosion.

Each anode features a circular base with an integrated vertical trim tab fin and a central threaded mounting arrangement. The fin extends beyond the circular base, forming the characteristic profile specified for counter-rotating Yamaha outboard applications. The sacrificial anode body is gradually consumed during service, helping reduce galvanic corrosion of surrounding protected metallic components.

The counter-rotation configuration is an important compatibility characteristic. Although the Tecnoseal 01134 series has the same principal dimensions as the standard-rotation Tecnoseal 01133 series, the trim tab configuration and OEM references differ. The correct version should therefore be selected according to the outboard's rotation type rather than dimensions alone.

The anode measures 140 mm (5.51 in) in overall length (l), 60 mm (2.36 in) in height (h) and 100 mm (3.94 in) in circular base diameter (Ø). The additional profile dimensions are 6 mm (0.24 in) for h1 and 14 mm (0.55 in) for h2. The central mounting thread is M10 × 1.25.

Three material versions are available with identical dimensions and mounting geometry. The zinc version, Tecnoseal 01134, weighs 0.66 kg (1.46 lbs) and corresponds to Osculati 43.270.61. The aluminium version, Tecnoseal 01134AL, weighs 0.26 kg (0.57 lbs) and corresponds to Osculati 43.270.62. The magnesium version, Tecnoseal 01134MG, weighs 0.16 kg (0.35 lbs). These material options allow selection of the appropriate sacrificial anode according to the vessel's operating water conditions.

Technical Specifications

Available Versions and Cross-References

Dimensions and Mounting Specifications

Product Codes and EAN

Compatibility and OEM References

• Compatible Manufacturer: Yamaha
• Outboard Power Range: 150–200 HP
• Rotation Type: Counter Rotation
• Application: Outboard trim tab anode
• Yamaha OEM Part Numbers: 6K1-45371-01, 6K1-45371-02
• Zinc Version: Tecnoseal 01134 / Osculati 43.270.61
• Aluminium Version: Tecnoseal 01134AL / Osculati 43.270.62
• Magnesium Version: Tecnoseal 01134MG

Key Features

• Designed for compatible Yamaha 150–200 HP counter-rotating outboard motors.
• Corresponds to Yamaha OEM part numbers 6K1-45371-01 and 6K1-45371-02.
• Counter-rotation trim tab configuration.
• Circular sacrificial anode with an integrated vertical fin.
• Helps protect submerged metallic lower-unit components against galvanic corrosion.
• Available in zinc, aluminium and magnesium versions.
• Overall length: 140 mm.
• Height: 60 mm.
• Circular base diameter: 100 mm.
• Additional profile dimensions: 6 mm (h1) and 14 mm (h2).
• Mounting thread: M10 × 1.25.
• Zinc cross-reference: Osculati 43.270.61.
• Aluminium cross-reference: Osculati 43.270.62.
• Identical dimensions and mounting geometry for all three material versions.

Compatibility Note: This series is specified for Yamaha counter-rotation outboard applications. It should not be selected as a replacement for a standard-rotation trim tab based only on matching dimensions. Before ordering, verify the engine rotation type, Yamaha OEM part number, fin orientation and M10 × 1.25 mounting arrangement. Select the appropriate sacrificial material for the vessel's operating water conditions.