18001-3711 KAWASAKI Exhaust Water JS300 300SX

Review KAWASAKI Oem Exhaust System Fresh Water for JS300 300SX

Introducing the Kawasaki JS300 300SX Exhaust Water Drain Kit, specifically designed for the Kawasaki Jet Ski 300SX model. This essential accessory ensures the efficient draining of excess water from your watercraft's exhaust system.

The kit includes two high-quality drain hoses: part number 18001-3711 and 18001-3724. These hoses are meticulously crafted from durable, heat-resistant materials that can withstand the extreme conditions of continuous water use. The hoses feature reinforced clamps to ensure a secure connection to the exhaust and a flexible design to accommodate various installation angles on your Jet Ski.

The 18001-3711 hose measures approximately 13.2 inches (33.5 cm) in length, with an inside diameter of 0.25 inches (6.35 mm), and an outside diameter of 0.31 inches (7.91 mm). This hose is designed for the lower exhaust drain connection.

The 18001-3724 hose measures approximately 15 inches (38.1 cm) in length, with an inside diameter of 0.25 inches (6.35 mm), and an outside diameter of 0.31 inches (7.91 mm). This hose is designed for the upper exhaust drain connection.

Installing these drain hoses is a straightforward process, allowing you to easily maintain your Jet Ski and keep it in optimal condition. Regularly draining the exhaust system helps prevent corrosion, reduces engine wear, and ensures the best possible performance for your watercraft.

In summary, the Kawasaki JS300 300SX Exhaust Water Drain Kit (18001-3711 and 18001-3724) is an essential accessory for your Kawasaki Jet Ski 300SX. These high-quality, heat-resistant drain hoses ensure efficient water draining, prevent corrosion, and contribute to the longevity and optimal performance of your Jet Ski.

Pros and Cons of Buying Kawasaki JS300 300SX Exhaust Water and Air Separator (Part Numbers 18001-3711 and 18001-3724)

The Kawasaki JS300 300SX water and air separator exhaust system is designed to enhance the performance and longevity of your Kawasaki jet ski. This system separates water and air, preventing water from entering the engine, which can lead to damage and decreased performance. In this analysis, we will discuss the advantages and disadvantages of investing in this exhaust system.

1. Improved engine performance: The exhaust water and air separator allows the engine to breathe more effectively, which results in increased horsepower and improved acceleration.

2. Enhanced durability: The system is made of high-quality materials, ensuring it can withstand the harsh conditions of regular jet ski usage.

3. Reduced maintenance: By preventing water from entering the engine, the exhaust water and air separator significantly decreases the need for frequent engine repairs and maintenance.

4. Quieter operation: The exhaust system is designed to reduce noise levels, making your jet ski quieter and more enjoyable to use.

5. Compatibility: The JS300 300SX exhaust water and air separator is specifically designed for Kawasaki jet skis, ensuring a perfect fit and optimal performance.

1. Cost: The price of the exhaust system may be a significant investment for some, particularly those on a tight budget.

2. Installation: Installing the exhaust system may require professional assistance, which could add to the overall cost.

3. Weight: The exhaust system may add some weight to the jet ski, potentially affecting handling and maneuverability.

4. Lack of OEM warranty: Since the exhaust system is not an original equipment manufacturer (OEM) part, it may not be covered under the manufacturer's warranty.

The Kawasaki JS300 300SX exhaust water and air separator offers several benefits, including improved engine performance, enhanced durability, reduced maintenance, quieter operation, and compatibility. However, it also comes with some drawbacks, such as cost, installation, weight, and the lack of an OEM warranty. Weighing these factors against the potential benefits, it is recommended that individuals who frequently use their Kawasaki jet ski in waters with heavy water intake, those seeking increased performance, and those willing to invest in long-term engine protection consider purchasing the Kawasaki JS300 300SX exhaust water and air separator.

Details:

My wife and I moved our family to Seneca, SC enjoy the beautiful fresh waters of lake cower. I end up covering partial cost of just about every package send out due to the high shipping these day. However, none of those experiences allowed me to work with my absolute favorite marine toy. Very nice condition oem Kawasaki complete exhaust assembly removed from a running, fresh water 1988 JS300.

Please do your research and reach out to me with fitment questions before committing a purchase. Unit a, fits most: 1986 - 1988 300/300sx units, note 1: this unit is in good usable condition showing normal signs of age, usage and wear. My wife and I still ride stand up skis to this day. I source, buy, disassemble, clean, picture, list and ship every part myself.

In 2012 my father and his two brothers decided to retire sell the business. Please reach out to me right away. I bought my first Kawasaki js550 stand-up jet ski back in 1988 and have been riding ever since. If you find yourself in a situation where your product is damaged shipping, miss-shipped, not as stated, etc.

Fast outbound shipping. Excellent packaging.

specifications watercraftimp:

• for models: Js300, 300sx
• brand: Kawasaki
• mpn: 18001-3711
• part type: Exhaust
• modified item: No

payments watercraftimp:

• wallet: google-pay
• other
• credit card: discover

offer watercraftimp:

• sold #: 10
• prices: $49.95–$88.60
• item condition: Used
• availability: in stock
• in stock #: 2
• options: ship-to-home
• started: april 9, 2026

shipping watercraftimp:

• service: ups ground
• type: fixed
• transit: 2-6 days
• carrier: ups
• class: standard

general watercraftimp:

• category: Watercraft Parts > Engines > Impellers Components

returns watercraftimp:

• time: 14 days
• paid by: buyer
• policy: returns accepted

seller watercraftimp:

• rating: 100.0%
• # reviews: 10443
• city: seneca, south carolina