1. Applications & Engine Compatibility

This tilt trim motor is designed around the classic Yamaha mid-horsepower outboard engineering platform. It is primarily built for 2-Stroke 3-cylinder engines ranging from 50HP to 90HP (typically spanning production years from the early 1990s through the 2000s, including popular 50G, 60F, 70B, 75C, 85A, and 90A models).

Due to the widespread adoption of this legacy layout in global commercial fishing and leisure markets, this part is highly cross-compatible with prominent aftermarket and domestic outboard brands matching the Yamaha blueprint:

• Brand Compatibility: Directly interfaces with equivalent setups from aftermarket suppliers (such as Premarine), as well as brands like Parsun, Hidea, and Pioneer that utilize identical mid-range bracket designs.

• Interchangeable Part Numbers: Replaces or interchanges with 6H1-43880-02-00, 6H1-43880-10-00, 6H1-43880-01-00, and various aftermarket Sierra or Arco equivalents.

2. Key Technical Features & Mechanical Specs

Built to withstand intense physical loads and highly corrosive marine environments, standard high-quality replacements for the 6H1-43880-00 feature specific manufacturing standards:

• 3-Bolt Triangular Mounting Flange: Features a precise, robust triangular base with three standard bolt holes engineered to anchor securely onto the hydraulic tilt-trim manifold block.

• Flat Spade/Blade Drive Shaft: The under-side drive mechanism utilizes a precision-machined flat blade (spade style) shaft tip that locks directly into the hydraulic oil pump gear inside the reservoir.

• 2-Wire Electrical System: Configured with a heavy-gauge two-wire harness (standard Sky Blue and Light Green wiring insulated in a protective PVC jacket) terminated with ring or bullet connectors. Reversing the polarity of these two wires dictates whether the motor spins clockwise or counterclockwise to trim the motor up or down.

• Marine-Grade Corrosion Shielding: The cylindrical exterior casing is treated with a specialized heavy black powder coating or epoxy finish to provide superior resistance against saltwater corrosion, galvanic scaling, and harsh UV exposure.

• Internal Sealing: Equipped with high-tolerance O-ring grooves at the base to ensure a completely watertight seal, protecting the internal armature and carbon brushes from moisture intrusion.

3. Supply Chain Demand & Maintenance Context

In the international marine logistics and repair sectors, power tilt trim motors are categorized as critical electrical wear-and-tear components. Because they are mounted low on the outboard bracket, they are constantly subjected to complete water submersion, damp bilge conditions, and high-amp electrical surges.

Over years of service, seals can degrade, leading to internal water entry, burnt armatures, or terminal corrosion that causes total trim failure. Because a malfunctioning trim motor completely compromises a vessel's maneuverability and transport safety, the 6H1-43880-00 is a staple, high-turnover inventory line for marine mechanics and international components distributors worldwide.

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OEM Part Numbers

Compatible OEM references include:

• 6H1-43880-01-00

• 6H1-43880-02-00

• 6H1-43880-10-00

  
  

Compatible Engine Models

This crankcase assembly is primarily designed for:

• 2-Stroke 3-cylinder engines ranging 50HP

• 2-Stroke 3-cylinder engines ranging 60HP

• 2-Stroke 3-cylinder engines ranging 70HP

• 2-Stroke 3-cylinder engines ranging 85HP

• 2-Stroke 3-cylinder engines ranging 90HP

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It is also widely used in compatible engines based on the Yamaha, including selected models from:

• Parsun

• Hidea

• SeaPro

• HDX

If you are unsure about compatibility, please provide your engine model number or identification plate for verification before ordering.

Applications

This TRIM MOTOR ASSY is commonly used for:

• Outboard engine repair

• Engine rebuilding projects

• Marine maintenance workshops

• Boat fleet maintenance

• Commercial fishing vessels

• Recreational boats

• Marine spare parts distribution