fits model: 250. make: Yamaha. year: 1982–2011.

( Manufacturer Part Number: 8R4-11635-00-00 ), ( Part Type: Piston )
The Yamaha Piston Bravo 250 outboard motor, model number 8R4-11635-00, is a remarkable marine propulsion system designed for small to mid-sized boats. This outboard motor was manufactured by Yamaha Motor Co. Ltd between 1982 and 2011. This powerful and efficient unit brings a perfect blend of performance, reliability, and versatility.
Design and Construction:The 250 horsepower Piston Bravo 4-stroke outboard engine is designed to meet the demands of sport fishing boats, pontoons, and larger skiffs. Employing a 4-cylinder, 3.5-liter displacement, the Bravo 250 features Yamaha's famous high-performance engine technology. The advanced engine design boasts twin valves per cylinder, electronically controlledSequential Multi-Point Fuel Injection (SMPFI), and an efficient cooling system that guarantees outstanding power delivery and enhanced combustion efficiency.
Power and Performance:This outboard engine specializes in delivering impressive power and excellent torque, ensuring ample power for water sports activities and efficient cruising. With a wide open throttle RPM range extending beyond 5,500 RPM, the Bravo 250 propels boats up to impressive top speeds. The motor's aerodynamic design enhances overall efficiency, helping to preserve fuel and maximize performance.
Durability and Reliability:Constructed using high-grade materials and Yamaha's cutting-edge engineering, durability and reliability are central features of the Piston Bravo 250. The engine comes equipped with a heavy-duty gearcase and stainless steel propeller, ensuring it withstands the harsh marine environment. The engine's electrostatic painting and nickel-aluminum alloy tubing add to its robustness and long-lasting performance.
Handling and Control:Yamaha's Piston Bravo 250 motor offers excellent handling and control for boaters. Designed with a compact and lightweight engine shape while maintaining exceptional stability, this motor sits snugly on the transom of your boat. Drivers can easily control the motor using Yamaha's ergonomic tiller or optional Helm Master EX electronic steering systems, offering precise maneuverability and responsiveness.
Maintenance and Service:The Piston Bravo 250 outboard motor requires minimal maintenance, thanks to Yamaha's innovative design approach. Although it's essential to follow a routine maintenance schedule, the 4-stroke engine significantly reduces the need for frequent oil changes and fuel filter replacements. Regular service intervals include periodic gear lube exchanges and accessory belt replacements.
Environmentally Friendly:Despite its impressive power, the Yamaha Piston Bravo 250 outboard motor focuses on responsible marine engineering. It adheres to strict EU and US emissions regulations and complies with the worldwide U.S. Clean Air Act. As an environmentally conscious power source, this motor enhances the enjoyment of water sports and recreational activities while minimizing its environmental impact.
The Yamaha Piston Bravo 250 25 8R4-11635-00, also known as the Yamaha 25 HP Four Stroke Outboard Motor, is a popular choice for small boats and personal watercraft due to its reliability, efficiency, and relatively low weight. Here are some pros and cons to help you make an informed decision before purchasing:
Pros:1. Fuel Efficiency: The Yamaha 25 HP Four Stroke Outboard Motor is known for its high fuel efficiency. It has a dual overhead camshaft design and multi-port fuel injection system, which helps maximize fuel economy.
2. Reliability: Yamaha is a well-known manufacturer of outboard motors, and the Bravo series is one of their flagship models. The 25 HP motor is known for its durability and long-lasting performance.
3. Compact and Lightweight: The motor is relatively compact and lightweight, making it easier to transport and maneuver, especially for smaller boats or trailered applications.
4. Quiet Operation: The motor operates quietly, making for a more enjoyable boating experience for passengers and reducing noise pollution.
5. Versatility: The motor can be used for a variety of applications, including fishing, water sports, and cruising.
Cons:1. Cost: The Yamaha 25 HP Four Stroke Outboard Motor is on the higher end of the price range for small outboard motors. While it offers many benefits, it may come with a higher price tag.
2. Maintenance: Like all engines, the Yamaha 25 HP Four Stroke Outboard Motor requires regular maintenance to keep it running at its best. This includes oil changes, fuel filter replacements, and occasional tune-ups.
3. Complexity: The motor may be more complex than some other outboard motors due to its advanced features and design. This could require more time and expertise to troubleshoot and repair, if needed.
4. Limited Power: While the motor offers plenty of power for most small boats, some larger or more powerful boats might require a more powerful motor.
5. Depreciation: As with any motor, the value of the Yamaha 25 HP Four Stroke Outboard Motor may depreciate over time.
Conclusion:Overall, the Yamaha Piston Bravo 250 25 8R4-11635-00 is a high-performing, fuel-efficient, and reliable outboard motor with a compact and quiet operation. While it may come with a higher price tag and require some maintenance, it offers many benefits and is a popular choice for small boats and watercraft. Ultimately, whether the Yamaha 25 HP Four Stroke Outboard Motor is the right choice for you depends on your specific boating needs, budget, and expertise. It is recommended to consider all the pros and cons above before making a decision. If you prioritize fuel efficiency, reliability, and quiet operation in a compact design, the Yamaha 25 HP Four Stroke Outboard Motor could be an excellent investment.
Yamaha Piston Bravo 250. 25 Over New 8R4-11635-00 0.25mm O/S BR. Yamaha Bravo 250.25 oversize, piston only, no rings. New oem Yamaha piston in original box. Piston 0.25Mm O/S AP. New condition.