YAMAHA 6P3-WS24B-21 Filter Cup

( Manufacturer Part Number: 6P3-WS24B-21 ), ( Part Type: Filter )

Review YAMAHA Filter Cup

The **Yamaha 6P3-WS24B-21 Filter Cup** is a high-performance, precision-engineered air filter designed specifically for Yamaha outboard motors, ensuring optimal airflow and peak engine efficiency while maintaining exceptional longevity. Crafted from a blend of advanced synthetic materials, this filter cup features a robust, durable construction that resists oil contamination, moisture, and debris, making it ideal for both freshwater and saltwater applications. The cup s sleek, aerodynamic design minimizes turbulence, allowing clean air to flow seamlessly into the engine while effectively trapping fine particles, dust, and marine contaminants that could otherwise compromise performance. With a tight-fitting, rubberized seal, this filter cup ensures a leak-proof installation, preventing air bypass and maintaining consistent engine power across all operating conditions. Its compact yet sturdy build is engineered to withstand the rigors of frequent use, whether in recreational boating, fishing excursions, or demanding marine environments. The 6P3-WS24B-21 is a direct-fit replacement for select Yamaha outboard models, including those with the 6P3 engine series, and is compatible with Yamaha s proprietary filter media for maximum filtration efficiency. By combining durability, precision engineering, and reliable performance, this filter cup is an essential component for any Yamaha outboard owner seeking to extend engine life, improve fuel economy, and ensure smooth, uninterrupted operation in any marine setting.

The **Yamaha 6P3-WS24B-21** is a high-quality air filter designed for Yamaha outboard engines, specifically the 6P3 series (such as the 6P3-WS24B-21 engine itself). Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Yamaha 6P3-WS24B-21 Filter Cup**

1. **OEM Quality and Compatibility**

The filter cup is manufactured by Yamaha, ensuring it meets the exact specifications of the engine it is designed for. This reduces the risk of improper fitment, leaks, or performance issues that can occur with aftermarket alternatives that may not be precisely engineered.

2. **Durability and Longevity**

Yamaha s components are built to withstand the demanding conditions of marine environments, including exposure to saltwater, vibration, and temperature fluctuations. The filter cup is likely constructed from robust materials such as high-grade plastic or reinforced composites, which can last for the lifespan of the engine with proper maintenance.

3. **Sealed Design to Prevent Water Ingestion**

The filter cup is designed to create a tight seal with the engine s intake system, minimizing the risk of water or debris entering the engine. This is critical for preventing corrosion and engine damage, especially in saltwater applications.

4. **Easy Installation and Maintenance**

The filter cup is straightforward to install and replace, typically featuring a quick-release mechanism or simple screws. This makes routine maintenance accessible for boat owners, reducing downtime and labor costs. The design also often allows for easy access to the filter element inside the cup for cleaning or replacement.

5. **Compatibility with Yamaha s Filter Elements**

The filter cup is designed to work seamlessly with Yamaha s proprietary filter elements (such as the WS24B-21 filter element). This ensures optimal airflow and filtration efficiency, as the cup and element are engineered to work together. Using non-OEM elements may compromise performance or fitment.

6. **Reliability for Performance Engines**

The 6P3 series is a high-performance outboard engine, and Yamaha s filter cup is designed to support its power output and efficiency. A properly functioning filter system helps maintain engine performance, fuel economy, and longevity.

7. **Warranty Coverage**

Purchasing an OEM filter cup may come with Yamaha s warranty coverage, depending on the retailer or dealer. This provides peace of mind in case of defects or premature failure, though warranties typically exclude wear-and-tear items like filters.

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### **Cons of the Yamaha 6P3-WS24B-21 Filter Cup**

1. **Higher Cost Compared to Aftermarket Alternatives**

OEM parts from Yamaha are generally more expensive than aftermarket equivalents. While the price reflects quality and reliability, it may be a significant investment for boat owners on a tight budget. Aftermarket filter cups from reputable brands (e.g., Seafoam, Filtrete, or marine-specific manufacturers) can offer comparable performance at a lower cost.

2. **Limited Availability Outside Yamaha Dealers**

The filter cup may not be readily available at non-Yamaha marine supply stores or online retailers that specialize in aftermarket parts. Boat owners may need to purchase it directly from Yamaha dealers or authorized distributors, which could add to the inconvenience or shipping costs.

3. **Potential for Overkill for Light-Duty Use**

If the boat is used primarily in freshwater or under light load conditions, the high-quality OEM filter cup may be more than necessary. In such cases, a slightly less expensive aftermarket filter cup could suffice without compromising performance.

4. **Replacement Frequency and Maintenance Costs**

While the filter cup itself is durable, the filter element inside it will need regular replacement (typically every 100 200 hours of use or as recommended in the owner s manual). The cost of replacement elements can add up over time, though this is true for both OEM and aftermarket systems.

5. **Potential for Misuse or Improper Installation**

If not installed or maintained correctly, even an OEM filter cup can fail to perform optimally. For example, failing to tighten the cup properly or using the wrong type of filter element could lead to leaks or reduced filtration efficiency. Boat owners must follow Yamaha s guidelines for installation and maintenance.

6. **Environmental and Disposal Considerations**

Like all single-use filter elements, the disposable nature of the filter media contributes to waste. While the filter cup itself is reusable, the frequent replacement of filter elements may raise environmental concerns for eco-conscious boat owners. Some aftermarket options offer washable or reusable filter elements, though these may not provide the same level of filtration as disposable elements.

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### **Conclusion**

The **Yamaha 6P3-WS24B-21 filter cup** is a high-quality, reliable, and well-engineered component that offers several advantages for Yamaha outboard engine owners. Its OEM status ensures compatibility, durability, and peace of mind, particularly for those who prioritize performance, longevity, and warranty coverage. The sealed design and ease of maintenance further enhance its appeal for marine applications.

However, the higher cost and limited availability may be drawbacks for some boat owners. For those seeking a balance between quality and affordability, aftermarket alternatives could be worth considering, provided they meet Yamaha s specifications and are from a reputable brand. Ultimately, the choice depends on the boat owner s budget, maintenance preferences, and the specific demands of their boating environment.

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### **Recommendation**

- You prioritize OEM quality, reliability, and warranty coverage.

- You are using the engine in demanding conditions (e.g., saltwater, high-performance applications).

- You value the ease of maintenance and compatibility with Yamaha s filter elements.

- You are comfortable paying a premium for a product that aligns with your engine s specifications.

- You are on a tighter budget and can find a high-quality, compatible filter cup from a trusted brand (e.g., Seafoam, Filtrete, or marine-specific manufacturers).

- You primarily use the boat in freshwater or light-duty conditions where an OEM filter cup may be overkill.

- You prefer exploring options with washable or reusable filter elements for environmental or cost-saving reasons.

For most Yamaha 6P3 engine owners who demand the best performance and reliability, the **Yamaha 6P3-WS24B-21 filter cup is the recommended choice**. However, always verify compatibility with your specific engine model and consult your owner s manual for maintenance intervals.

Details:

New OEM Yamaha Fuel Filter Cup.

part #: 6p3ws24b21 prices

• $89.39-$149.00

specifications ouboaen:

• for makes: Yamaha
• mpn: 6p3-ws24b-21
• part type: Filter

seller ouboaen:

• rating: 100.0%
• # reviews: 543
• city: Harrison Township, Michigan

returns ouboaen:

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

offer ouboaen:

• best offers: True
• quantity: 2
• availability: In Stock
• options: Ship-to-home
• sold: 0
• started: March 12, 2026

shipping ouboaen:

• cost: $0.00
• transit: 2-6 Days
• class: Standard, Expedited
• service: USPS Ground Advantage, USPS Priority Mail
• carrier: USPS
• type: Calculated

payments ouboaen:

• other
• wallet: Google-pay
• credit card: Diners-club

general ouboaen:

• Boat Parts > Outboard Engines Components > Intake Fuel Systems
• condition: New

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