fits make: Omc. year: 1977–1984.

( Manufacturer Part Number: 391274 ), ( Part Type: Gear Unit Case ), ( Engine Hp : 9.9/15 ), ( Stroke: 2-stroke )
The OMC 388001 gear unit, a powerhouse from the 1970s, is a testament to the durability and reliability of marine engineering. This specific model, with a horsepower range of 9.9 to 15, was manufactured in the mid-1970s to the early 1980s, and its identification number is 84 391274.
The OMC 388001 gear unit is a critical component in the propulsion system of a variety of watercraft, including boats and personal watercraft. It is designed to transmit power from the engine to the propeller, ensuring smooth and efficient operation. The gear unit is constructed from high-quality materials, including cast iron and steel, to withstand the corrosive effects of saltwater and the mechanical stresses of marine use.
The gear unit features a compact and robust design, with a rugged housing that protects the internal components from damage. It is equipped with a multi-stage gear reduction system, which provides the necessary torque to drive the propeller efficiently, even in challenging conditions. The unit is also outfitted with a heavy-duty seal system to prevent water ingress and ensure reliable operation in a wet environment.
In terms of maintenance, the OMC 388001 gear unit is designed for ease of access and serviceability. The housing can be easily opened to allow for inspection and maintenance of the internal components, including the gears, bearings, and seals. The unit is also equipped with a drain plug to make routine maintenance, such as oil changes, quick and straightforward.
In conclusion, the OMC 388001 gear unit is a reliable and durable marine propulsion component, capable of providing years of trouble-free service. Its robust construction, efficient gear reduction system, and ease of maintenance make it an excellent choice for boat owners looking for a high-performance and dependable propulsion solution.
Pros of buying a OMC 388001 gear unit:1. Reliability: OMC is a well-known brand with a reputation for producing durable and reliable marine engines and gear units.
2. Availability of spare parts: Due to its popularity and long production history, it is relatively easy to find replacement parts for this gear unit.
3. Affordability: Compared to newer models, this gear unit may be more affordable due to its age and the fact that it is no longer in production.
4. Familiarity: If you have experience working with OMC marine engines or gear units, you may find this one easier to work with.
Cons of buying a OMC 388001 gear unit:1. Age: The gear unit is over 40 years old, which means it may have worn out or malfunctioning components.
2. Limited technology: Compared to newer models, this gear unit may not have the latest technology features, such as electronic controls or improved fuel efficiency.
3. Potential for compatibility issues: If you are planning to use this gear unit with a newer boat or engine, there may be compatibility issues that require modifications or workarounds.
4. Limited warranty: Due to its age, the gear unit may not be covered by a warranty, which could leave you responsible for any repairs or replacements.
Conclusion:Overall, the OMC 388001 gear unit is a reliable and affordable option for those looking for a marine gear unit with a long production history. However, its age and potential for worn-out or malfunctioning components should be considered. If you are planning to use this gear unit with a newer boat or engine, you should carefully evaluate any potential compatibility issues. Ultimately, the decision to buy the OMC 388001 gear unit depends on your specific needs, budget, and level of comfort working with older equipment.
Recommendation:If you are comfortable with older equipment and are looking for a reliable and affordable marine gear unit, the OMC 388001 may be a good option for you. However, it is recommended that you inspect the gear unit thoroughly before purchasing to ensure that it is in good condition and that any needed repairs or replacements can be made at an affordable cost. Additionally, if you are planning to use this gear unit with a newer boat or engine, you should consult with a marine mechanic or expert to evaluate any potential compatibility issues.
This one came off a 1980, 15hp but, as you can see, it fits few more its in rough shape if yours is shot and you're not fussy about looks, it'll get ya back out there, only that, pretty darned cheap.