YAMAHA 90105-12228-00 Riva Engine Mount Bolt 87 CV80 17M-15317-00 P1070

( Part Type: Engine Mount Bolt ), ( Oe/oem Part Number: 17m-15317-00 ), ( Compatible Model: Cv80, Cv50l ), ( Vintage Part: Yes ), ( Universal Fitment: No ), ( Compatible Year: 1987, 1986, 1985, 1984, 1983 ), ( Country Of Origin: Japan ), ( UPC: 901051222800 )

Review YAMAHA 87 Riva Engine Mount Bolt 90105-12228 fits 1983

The **Yamaha 90105-12228-00** is a meticulously engineered, high-performance engine mount bolt specifically designed for the **CV80 Riva** outboard motor series, manufactured between **1983 and 1987**. This critical component plays a pivotal role in maintaining the structural integrity and operational stability of the engine assembly, ensuring smooth power transmission while minimizing vibration and stress on the motor s mounting system. Crafted from **high-grade, heat-treated steel**, this bolt is precision-machined to exacting tolerances, guaranteeing both durability and reliability under the demanding conditions of marine environments where exposure to saltwater corrosion, constant motion, and fluctuating loads can compromise lesser-quality fasteners. The **17M-15317-00** designation (often referenced alongside the bolt number as **P1070**) indicates its compatibility with the **Riva s CV80 engine mount assembly**, where it secures the engine block to the lower unit, preventing lateral displacement and ensuring optimal alignment for consistent performance. Its **threaded design** is engineered to withstand the torque forces generated during operation, while its **smooth, corrosion-resistant finish** helps mitigate the effects of prolonged exposure to moisture and marine-grade contaminants. Whether replacing a worn-out bolt or upgrading for enhanced longevity, this part is an essential upgrade for enthusiasts seeking to restore or maintain the peak functionality of their **Yamaha CV80 Riva** outboard, bridging the gap between raw power and seamless operation with precision and strength.

### **Analysis of buying a Yamaha 87 CV80 Riva Engine Mount Bolt (Part Numbers: 90105-12228-00, 17M-15317-00, P1070)**

This part is an engine mount bolt for the Yamaha 87 CV80 Riva outboard motor, specifically designed to secure the engine to the lower unit. Below is a detailed breakdown of the pros and cons of purchasing this part, followed by a conclusion and recommendation.

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### **Pros of Buying This Part**

1. **Original Equipment Manufacturer (OEM) Quality**

The part is a genuine Yamaha component, meaning it is manufactured to the same high standards as the original parts installed on the motor. This ensures proper fit, durability, and compatibility with the engine s design.

2. **Reliability and Longevity**

Yamaha outboard motors are known for their robust construction, and OEM parts are built to withstand the stresses of marine environments, including saltwater corrosion, vibration, and temperature fluctuations. Using an authentic bolt reduces the risk of premature failure due to inferior materials or poor manufacturing.

3. **Compatibility and Fit**

The part is specifically designed for the Yamaha CV80 Riva model from 1983 1987. This ensures an exact fit with no modifications required, reducing the risk of misalignment or improper installation that could lead to engine damage or performance issues.

4. **Warranty and Support**

Purchasing from an authorized Yamaha dealer or distributor may come with a warranty or return policy, providing peace of mind in case the part is defective. This is less likely with aftermarket or generic parts.

5. **Prevents Engine Damage**

Engine mount bolts are critical for maintaining proper alignment between the engine and lower unit. A loose or worn bolt can cause excessive vibration, misfiring, or even catastrophic failure of the engine mount or surrounding components. Replacing a faulty bolt with an OEM part ensures the motor remains securely mounted.

6. **Resale Value**

If you plan to sell the motor or boat in the future, having OEM parts installed can increase its resale value, as buyers often prefer fully original or high-quality replacement components.

7. **Ease of Installation**

Since the part is designed for this specific model, installation should be straightforward, requiring minimal tools and expertise. This contrasts with aftermarket parts that may require additional modifications or adjustments.

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### **Cons of Buying This Part**

1. **Cost**

OEM parts from Yamaha are typically more expensive than aftermarket alternatives. The price may be a barrier for budget-conscious buyers, especially if the part is only needed for maintenance rather than performance enhancement.

2. **Limited Availability**

Older Yamaha models like the CV80 Riva may not be as widely supported by dealers or online retailers as newer models. Finding the exact part number (90105-12228-00, 17M-15317-00, or P1070) may require contacting a specialist or searching through vintage marine parts suppliers, which could delay the purchase.

3. **Potential for Counterfeit Parts**

When buying from third-party sellers (e.g., eBay, Amazon, or unverified online marketplaces), there is a risk of receiving counterfeit or refurbished parts that do not meet OEM standards. Always verify the seller s reputation and authenticity of the part.

4. **Overkill for Minor Issues**

If the bolt is only slightly worn or loose, some buyers might consider using a high-quality aftermarket bolt instead of an OEM part. However, this is not recommended for safety-critical components like engine mounts, where failure could lead to severe damage.

5. **Shipping and Handling Risks**

Older or heavy parts may be fragile or require special handling during shipping. There is a risk of damage in transit, especially if the seller does not offer proper packaging or insurance.

6. **No Performance Benefit**

Unlike performance upgrades (e.g., exhaust systems, fuel injectors), replacing an engine mount bolt does not improve the motor s power, fuel efficiency, or speed. The primary benefit is ensuring structural integrity and preventing failure.

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### **Conclusion**

The Yamaha 87 CV80 Riva engine mount bolt (part numbers 90105-12228-00, 17M-15317-00, or P1070) is a critical component that should not be compromised. While it is more expensive than aftermarket alternatives, the benefits of using an OEM part reliability, exact fit, warranty support, and prevention of engine damage far outweigh the drawbacks for most owners. The risks of using substandard parts, such as bolt failure or misalignment, could lead to costly repairs or even engine failure, making the OEM part a worthwhile investment for safety and longevity.

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### **Recommendation**

1. **Purchase from an Authorized Source**

Buy the part directly from a Yamaha dealer, a reputable marine parts distributor, or a verified online retailer (e.g., Yamaha s official website, MarineMax, or West Marine). Avoid unknown sellers to prevent receiving counterfeit or damaged parts.

2. **Verify Part Numbers**

Double-check that the part number matches your motor s specifications. If you are unsure, consult the motor s service manual or contact Yamaha customer support for confirmation.

3. **Inspect the Part Upon Receipt**

Once the part arrives, visually inspect it for signs of wear, corrosion, or damage. Ensure it matches the original bolt in terms of size, threading, and material.

4. **Install Properly**

Follow Yamaha s recommended installation procedures, including torque specifications. Over-tightening or under-tightening can damage the bolt or the engine mount.

5. **Consider Aftermarket as a Last Resort**

Only consider aftermarket bolts if you are unable to locate the OEM part and have confirmed that the aftermarket option is a direct replacement (e.g., from a trusted brand like TorqSpec or Marine Hardware). However, for safety-critical components like engine mounts, OEM is strongly preferred.

6. **Maintain Regularly**

Even with an OEM bolt, inspect the engine mount and bolts during routine maintenance. Replace any bolts that show signs of fatigue, corrosion, or improper threading.

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**Final Verdict:** For the Yamaha 87 CV80 Riva, investing in the genuine OEM engine mount bolt is the safest and most reliable choice. The cost is justified by the part s quality, compatibility, and role in preventing engine damage. If budget is a concern, prioritize purchasing from a trusted source to avoid counterfeit parts.

Details:

In 1982 Yamaha CV80 Riva JYA13T00-8-DC001796, 1 #2 Engine Mount Bolt 90105-12228-00 #3 Nut, #12 Spacer 2 #14 Washer #15 Keeper FITS model's CV50L 1984 RIVA 50 1985 1986 1987 CV80K 1983 CV80L This product fits to 6 model's.

part #: 901051222800 prices

• $19.95-$40.50

specifications cyclevintagee:

• for makes: Yamaha
• part type: Engine Mount Bolt
• oe/oem part number: 17m-15317-00
• compatible model: Cv80, Cv50l
• vintage part: Yes
• universal fitment: No
• compatible year: 1987, 1986, 1985, 1984, 1983
• country of origin: Japan
• upc: 901051222800

seller cyclevintagee:

• city: Spokane, Washington
• rating: 99.9%
• # reviews: 6801

payments cyclevintagee:

• wallet: Paypal
• other
• credit card: Discover

general cyclevintagee:

• Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
• condition: Used

returns cyclevintagee:

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

shipping cyclevintagee:

• transit: 3-7 Days
• class: Standard
• cost: $0.00
• type: Fixed
• service: Standard

offer cyclevintagee:

• options: Ship-to-home
• quantity: 1
• availability: In Stock
• sold: 0
• started: April 27, 2026

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