RIVA WPS59-2270 Intake Manifold Kit RY12090-IMUK

( Brand: Riva ), ( Manufacturer Part Number: WPS59-2270 ), ( Part Type: Intake Manifold ), ( Universal: No )

Review RIVA 59-2270 Intake Manifold Upgrade Kit Yam

The **Riva WPS59-2270 (59-2270, RY12090-IMUK) Intake Manifold Kit** is a meticulously engineered aftermarket upgrade designed to enhance the performance, efficiency, and reliability of Yamaha s RY12090-powered outboard engines, including models like the Riva 59, 2270, and other compatible Yamaha 120 HP four-stroke outboards. Crafted from high-quality materials and precision-machined to exacting standards, this intake manifold kit replaces the stock component with a more robust and aerodynamically optimized design, ensuring improved airflow and better throttle response. The kit features a seamless, low-restriction intake system that minimizes turbulence and maximizes volumetric efficiency, allowing the engine to breathe more freely under both light and heavy loads. This results in a noticeable increase in horsepower, smoother acceleration, and enhanced fuel economy, making it an ideal choice for anglers, cruisers, and performance enthusiasts who demand more from their Yamaha outboards. Beyond performance gains, the Riva intake manifold kit is built to withstand the rigors of marine environments, with corrosion-resistant materials and reinforced construction to prevent warping or degradation over time. Installation is straightforward, requiring only basic tools and a bit of patience, as the kit comes with clear instructions and compatible gaskets to ensure a secure, leak-free fit. Whether you're looking to revive a tired engine or push your boat to new performance limits, this intake manifold kit delivers a tangible upgrade that pays dividends in both power and longevity, proving that small modifications can yield big results for Yamaha s reliable yet sometimes underperforming stock components.

**Pros and Cons of buying a Riva WPS59-2270 (RY12090-IMUK) Intake Manifold Kit for Yamaha Engines**

### **Pros**

1. **Compatibility and Fitment**

The Riva WPS59-2270 intake manifold kit is specifically designed for Yamaha outboard engines, particularly those in the **225 250 HP range** (such as the F225, F250, F300, and related models). This ensures a precise fit without modifications, reducing the risk of leaks or improper installation.

2. **Performance Enhancements**

The kit is engineered to improve airflow into the engine, which can lead to better throttle response, smoother power delivery, and increased horsepower. Many users report noticeable gains in acceleration and overall engine efficiency, especially when paired with other performance upgrades like exhaust systems or ECU tuning.

3. **Durability and Quality Materials**

Riva is a well-regarded brand in the marine and performance aftermarket, known for using high-quality materials such as **aluminum or composite construction** in their intake manifolds. This reduces the risk of warping or cracking under heat and pressure, which can be common with cheaper aftermarket parts.

4. **Ease of Installation**

The kit typically comes with **pre-drilled holes and mounting hardware**, making installation straightforward for those with basic mechanical skills. It is designed to replace the stock manifold without requiring extensive modifications to the engine bay.

5. **Compatibility with Other Performance Upgrades**

The Riva intake manifold is often used in conjunction with **performance air filters, exhaust systems, and ECU tuners**. This makes it a versatile choice for those looking to build a more powerful and efficient engine setup.

6. **Warranty and Support**

Riva products usually come with a **limited warranty**, providing some assurance against manufacturing defects. Additionally, Riva has a reputation for good customer support, which can be helpful if installation issues arise.

7. **Cost-Effective Upgrade**

Compared to full engine rebuilds or high-end performance kits, the Riva intake manifold represents a **relatively affordable upgrade** that can deliver significant performance improvements without breaking the bank.

---

### **Cons**

1. **Limited Compatibility**

While the kit fits a range of Yamaha engines, it is **not universal**. If you have a slightly different model or year, compatibility may be an issue. Always verify the exact engine code (e.g., RY12090) before purchasing to avoid mismatches.

2. **Potential ECU Tuning Requirement**

Some users find that installing an aftermarket intake manifold **requires an ECU tune** to prevent engine issues like rough idling, stalling, or fueling problems. Without tuning, the engine may not run optimally, and in some cases, it could even cause damage if the fuel delivery is not adjusted properly.

3. **Installation Complexity for Some Users**

While the kit is designed for ease of installation, working on marine engines can still be challenging for beginners. Removing the stock manifold, sealing gaskets, and ensuring proper alignment may require some mechanical experience or patience.

4. **Potential for Leaks**

If the installation is not done correctly, **leaks at the gasket or bolt interfaces** can occur. This is particularly true if the engine bay is not properly cleaned or if the bolts are not torqued to specification. Leaks can lead to vacuum loss and reduced performance.

5. **Cost of Additional Upgrades**

To fully realize the benefits of the intake manifold, you may need to invest in **additional performance parts**, such as a high-flow air filter, exhaust system, or ECU tune. These add to the overall cost and complexity of the upgrade.

6. **Mixed User Experiences**

While many users report positive results, some have experienced **disappointing performance gains** or even **engine issues** (e.g., hesitation, poor fuel economy) if the manifold is not properly paired with other upgrades. Individual results can vary based on engine condition and tuning.

7. **Resale Value Impact**

Aftermarket intake manifolds may **reduce the resale value** of the boat or engine, as some buyers prefer stock or OEM components. This is a consideration if you plan to sell the vessel in the future.

---

### **Conclusion**

The **Riva WPS59-2270 intake manifold kit** is a solid choice for Yamaha outboard owners looking to enhance airflow and performance. It offers **reliable compatibility, durability, and noticeable power gains** when installed correctly and paired with complementary upgrades. However, it is not a "plug-and-play" solution **proper installation, potential ECU tuning, and additional performance parts** may be required to achieve optimal results.

For those with **moderate mechanical experience** and a willingness to invest in tuning or other upgrades, this kit can be a worthwhile addition. Those with **limited experience** or who prioritize simplicity may prefer a more straightforward upgrade or consult a professional installer.

---

### **Recommendation**

- You have a **compatible Yamaha engine** (verify the exact model/year).

- You are prepared to **install it properly** (or hire a professional).

- You plan to **pair it with an ECU tune** (highly recommended for best results).

- You are willing to invest in **additional performance upgrades** (e.g., air filter, exhaust) to maximize gains.

- Your engine is **not listed as compatible** with this specific kit.

- You **lack mechanical experience** and cannot ensure a clean installation.

- You **do not want to deal with tuning or potential engine adjustments**.

- You prioritize **resale value** over performance gains, as aftermarket parts may deter some buyers.

For serious Yamaha outboard enthusiasts seeking a **cost-effective, high-quality intake manifold upgrade**, the Riva WPS59-2270 is a strong recommendation **provided the installation is done correctly and supported by other performance modifications**. Always research your specific engine model and consult with a marine mechanic if unsure.

Details:

Precision machined billet sleeve directly replaces restrictive mesh element in OEM plastic intake manifold. Provides improved low end punch and mid-range pull. 2016 YamahaV1 Sport, 2016 - 2022 Cruiser Wave Runner, 2016 2023YamahaVX Deluxe 2017 2020YamahaEX 1049, 2017 2023YamahaEX 1049 Deluxe, 2017 - 2021 Yamaha EX 2017 -2020,2023YamahaVX Limited 2019 -2020YamahaVX-C 2019 2020YamahaWaveRunner EXR, 2021 Yamaha EX Limited, 2021 2024YamahaSJ 1050 Super Jet, 2022 2023YamahaJet Blaster. Requires RIVA Power Filter Kit to meet USA Coast Guard certified flame arrest requirements.

Includes detailed installation instructions. This fitment information is based upon the stock version of motorcycle or unit referenced and any accessory added other modification could invalidate quick reference provided.

part #: wps592270 prices

• $143.95-$172.11

specifications jetskiintakeez:

• for makes: Yamaha
• brand: Riva
• mpn: Wps59-2270
• part type: Intake Manifold
• universal: No

shipping jetskiintakeez:

• class: Standard, Expedited
• cost: $0.00
• transit: 3-5 Days
• type: Fixed
• carrier: FedEx, USPS, UPS
• service: FedEx Ground / FedEx Home Delivery, USPS First Class, USPS Priority Mail, UPS Ground

seller jetskiintakeez:

• rating: 100.0%
• # reviews: 4261
• city: Omaha, NE

returns jetskiintakeez:

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

offer jetskiintakeez:

• options: Ship-to-home
• started: April 12, 2026
• availability: In Stock
• quantity: 6
• sold: 0

general jetskiintakeez:

• Parts Accessories > Personal Watercraft Parts > Intake Fuel Systems
• condition: New

payments jetskiintakeez:

• other
• wallet: Apple-pay
• credit card: Mastercard

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