SEI MARINE 90-116-01D Drive Shaft Gear Assembly

Compatibility

Ensure your boat's reliability and full control on the water by choosing the SEI MARINE 90-116-01D complete upper gear assembly. This is a critical component of the propulsion system, designed for long-term operation in harsh marine conditions. Produced by the renowned SEI MARINE, this part serves as a direct replacement for original equipment, offering equally high manufacturing quality often at a more favorable price. Due to the nature of the spare parts market, compatibility with specific engine models (including well-known brands like Mercury or Yamaha) must be verified individually. We recommend comparing the catalog number 90-116-01D with the data in your engine's documentation. If you have any doubts about fitment, please contact our customer service department, who will be happy to assist you in selecting the correct part.

Installation and Operation

Replacing the upper gear is an operation requiring precision. Before starting work, ensure you have the appropriate tools and new seals. Correct installation is crucial to avoid oil leaks and premature bearing wear. After installation, we recommend checking the oil level in the gear and performing a test run of the engine in the water to ensure the drive operates smoothly and without unusual noises. Regular maintenance of this component extends the lifespan of the entire propeller shaft.

• Complete kit – you receive a ready-to-install unit, saving time and the cost of purchasing individual components separately.
• High durability – corrosion-resistant construction designed for dynamic loads, ideal for intensive use.
• Precision engineering – guarantees smooth power transmission and boat course stability.
• Safe replacement – the alternative meets original quality standards, ensuring safety on the water.