SEA-DOO 290837252 Rotary Shaft JS54

( Manufacturer Part Number: 290837252 ), ( Type: Rotary Valve )

Review SEA DOO Oem Rotary Shaft Assembly fits GTI 1999

Introducing the Sea-Doo GTI 1999 Jet Ski model with the part number 290837252 and the engine type Rotary Shaft JS54. This watercraft is a classic and a favorite among jet ski enthusiasts, known for its powerful performance and sleek design.

The Rotary Shaft JS54 engine is a marvel of marine engineering. It boasts a 54-horsepower output, providing an exhilarating riding experience on the water. The engine's design is unique as it uses a rotary supercharger, which delivers an impressive amount of torque and power for its size. The result is quick acceleration and a top speed of around 55 miles per hour.

The Sea-Doo GTI 1999 Jet Ski model comes with a versatile and spacious deck, offering ample room for riders and passengers to comfortably enjoy their time on the water. The ergonomic seat design ensures a comfortable riding position, allowing for long hours of enjoyable use.

The watercraft also features a closed-loop cooling system, which recycles the water used to cool the engine, reducing the amount of water intake and minimizing the environmental impact. The jet pump design offers excellent maneuverability and control, making this jet ski a great choice for riders of all skill levels.

Additionally, the GTI 1999 Jet Ski model comes equipped with a variety of convenient features, such as a reboarding step, a tow hook, and a storage compartment for additional gear. The watercraft also includes a fuel gauge and a ignition switch with a security system.

The Sea-Doo GTI 1999 Jet Ski model with the part number 290837252 and the Rotary Shaft JS54 engine is an excellent choice for those seeking a powerful and versatile watercraft. Its impressive performance, comfortable design, and convenient features make it a favorite among jet ski enthusiasts.

The Sea-Doo GTI 1999 JS54 with model number 290837252 is a rotary shaft personal watercraft (PWC) that was produced by Sea-Doo, a well-known brand in the watercraft industry. Here are some pros and cons that might help you in deciding whether to buy this particular model:

1. Rotary engine: Unlike jet-pump models, the GTI JS54 features a rotary engine, which provides more power, better top speed, and a smoother ride.

2. Comfortable seating: This model comes with a two-up seat, which is comfortable and spacious, making it a great choice for riders who want to bring a passenger.

3. Versatile: The GTI JS54 can be used for various water activities, including tow sports, fishing, and cruising.

4. Fuel efficiency: Rotary engines are generally more fuel-efficient than jet pumps, which means you'll save money on gas over time.

5. Durable: Sea-Doo is known for building high-quality watercraft, and the GTI JS54 is no exception. It's built to last and can handle rough waters.

1. Maintenance: Rotary engines require more maintenance than jet pumps, including regular oil changes and tune-ups.

2. Price: The GTI JS54 is a more expensive model compared to some jet pump PWCs, which might be a deterrent for some buyers.

3. Weight: This model is heavier than some jet pump PWCs, which might make it more difficult to transport and launch.

4. Noise: Rotary engines can be louder than jet pumps, which might be a concern for those who want a quieter watercraft.

5. Age: Being a 1999 model, the GTI JS54 might not have some of the latest features that are available on newer models.

In conclusion, the Sea-Doo GTI 1999 JS54 with model number 290837252 is a high-performance, durable, and versatile watercraft that offers a smooth ride and ample power. However, it requires more maintenance, is more expensive, heavier, and louder compared to some jet pump models. Ultimately, if you're looking for a powerful, comfortable, and versatile watercraft with a rotary engine, the GTI JS54 might be a great choice for you. However, if you're on a tight budget, prefer a quieter watercraft, or don't want to deal with the additional maintenance that comes with a rotary engine, you might want to consider other options.

Recommendation: If you're in the market for a used rotary engine PWC and have a budget for a high-performance model, the Sea-Doo GTI 1999 JS54 with model number 290837252 is definitely worth considering. However, make sure to factor in the additional maintenance costs, and consider test-driving the watercraft before purchasing to ensure that it's in good condition. If you're on a tighter budget or prefer a quieter, easier-to-maintain watercraft, you might want to consider a newer jet pump model instead.

Details:

Change your mind, don't need the part, or just wan't what you are looking for. Removed From: 1999 Sea-Doo GTI with miles.: This Rotary shaft is in very good condition and shows normal signs of wear. 1999 Sea-doo Gti Oem Rotary Shaft Assembly 290837252 JS54.

part #: 290837252 prices

• $69.95-$118.50

specifications perwatercraft:

• for models: Gti
• for makes: Sea-doo
• for years: 1999
• mpn: 290837252
• type: Rotary Valve

seller perwatercraft:

• city: Eau Claire, Wisconsin
• # reviews: 23145
• rating: 99.2%

returns perwatercraft:

• policy: Returns Accepted
• paid by: Seller
• time: 30 Days

general perwatercraft:

• Parts Accessories > Personal Watercraft Parts > Other Parts
• condition: Used

offer perwatercraft:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: July 8, 2025
• best offers: True
• quantity: 1

shipping perwatercraft:

• carrier: USPS
• class: Expedited
• transit: 3-7 Days
• service: USPS Priority Mail
• type: Fixed
• cost: $0.00

payments perwatercraft:

• other
• credit card: Discover
• wallet: Paypal

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