WSM 65-250 Coil Ignition 85-91 1UY-82310-41-00

( Brand: Wsm ), ( Manufacturer Part Number: 65-250 ), ( Part Type: Ignition Coil )

Review WSM Coil Ignition Yamaha 85-91 fits 200 250 350

The **WSM 65-250 Coil Ignition System (Part #1UY-82310-41-00)** is a high-performance, direct-replacement ignition coil designed specifically for Yamaha outboard motors from the 1985 to 1991 model years, covering the 200, 250, and 350cc engines. Engineered to exceed OEM standards, this coil delivers superior spark consistency, enhanced fuel efficiency, and improved engine responsiveness key factors for both reliability and performance in marine applications. Crafted from high-quality materials, the WSM coil features a robust, corrosion-resistant construction to withstand the harsh marine environment, including saltwater exposure, vibration, and temperature fluctuations. Its precision-engineered windings ensure a strong, stable ignition spark, reducing misfires and promoting cleaner combustion, which translates to smoother operation and extended engine life. The coil s compact yet durable design fits seamlessly into the original mounting location, maintaining the factory wiring layout while offering a noticeable upgrade in electrical performance. Whether used for daily fishing trips, recreational boating, or competitive racing, this coil is an ideal choice for Yamaha owners seeking a cost-effective yet high-quality upgrade that restores or enhances their engine s ignition reliability. Backed by WSM s reputation for quality and compatibility, this part is a straightforward, hassle-free solution for restoring peak performance to older Yamaha outboards.

### Pros and Cons of Buying a WSM 65-250 Coil Ignition for Yamaha 200/250/350 (Models 1985-1991, Part Number 1UY-82310-41-00)

---

1. **Improved Performance and Reliability**

The WSM coil ignition system is designed to replace the stock ignition coils on older Yamaha models, offering better spark consistency and stronger ignition. This can lead to smoother acceleration, better throttle response, and improved fuel efficiency, especially noticeable in engines that may have been running sluggishly due to aging or worn-out stock coils.

2. **Longer Lifespan**

Stock ignition coils on these older Yamaha models are prone to wear, corrosion, and failure over time, particularly in high-mileage or heavily used bikes. The WSM coil is built with higher-quality materials and better engineering, which can significantly extend the lifespan of the ignition system, reducing the frequency of replacements.

3. **Easier Installation**

The WSM coil is designed as a direct replacement for the original Yamaha coil, meaning it fits seamlessly without requiring modifications to the wiring or mounting. Installation is straightforward and can often be done in under an hour with basic tools, making it an attractive option for DIY enthusiasts.

4. **Cost-Effective Upgrade**

Compared to a full engine rebuild or replacement, upgrading to a WSM coil is a relatively inexpensive way to restore performance and reliability. It avoids the need for more extensive and costly repairs while providing noticeable improvements.

5. **Compatibility with Other Modifications**

If you ve already installed other performance upgrades (such as carburetors, exhaust systems, or camshafts), the WSM coil can complement these modifications by ensuring a more robust ignition system. This helps prevent misfires that could negate the benefits of other upgrades.

6. **Reduced Risk of Electrical Issues**

Older Yamaha models are notorious for electrical gremlins, including corroded or failing ignition components. The WSM coil is less susceptible to corrosion and electrical shorts, which can reduce the likelihood of intermittent misfires or starting problems.

7. **Positive Community Feedback**

Many riders and mechanics in the classic Yamaha community report success with the WSM coil, citing improved reliability and performance. This word-of-mouth endorsement adds credibility to the product, especially for those who trust the opinions of fellow enthusiasts.

---

1. **Cost Relative to Stock Coil**

While the WSM coil is more affordable than a full engine rebuild, it is still more expensive than a generic OEM replacement coil. For budget-conscious riders, this may be a deterrent, especially if the stock coil is still functioning adequately. However, the long-term savings in reliability often justify the upfront cost.

2. **Potential for Incompatibility with Aftermarket Ignition Systems**

If you re running other aftermarket ignition components (such as a CDI box or electronic ignition system), you ll need to ensure that the WSM coil is compatible with your setup. While it s designed for direct replacement, some riders have reported minor adjustments may be needed to optimize performance with certain aftermarket parts.

3. **Limited Availability and Lead Times**

Like many specialty parts for older motorcycles, the WSM coil may not be readily available at every bike shop. Purchasing online (e.g., from the manufacturer s website or reputable aftermarket dealers) may result in shipping delays, which could be frustrating if you re in a hurry to complete a repair.

4. **Mixed Reviews on Durability in Extreme Conditions**

While the WSM coil is generally praised for its durability, some users operating their bikes in harsh environments (e.g., extreme heat, cold, or high humidity) have reported occasional issues with longevity. Proper maintenance (such as keeping the coil clean and dry) is essential to mitigate these risks.

5. **No Warranty or Return Policy (Depending on Seller)**

Some sellers of aftermarket parts, including the WSM coil, may offer limited or no warranty. If the coil fails prematurely, you may be out of luck unless you purchased it from a dealer with a return policy. Always check the seller s terms before making a purchase.

6. **Requires Basic Mechanical Knowledge**

While installation is relatively simple, it does require familiarity with motorcycle electrical systems. Those unfamiliar with wiring or ignition components may encounter challenges during installation, potentially leading to frustration or incorrect setup.

7. **May Not Be Necessary for Low-Mileage Bikes**

If your Yamaha is relatively new (in terms of mileage) and the stock coil is still functioning well, upgrading to the WSM coil may not be justified. In such cases, the cost could be better spent on other performance or maintenance upgrades.

---

The WSM 65-250 coil ignition is a highly regarded upgrade for Yamaha 200/250/350 models from 1985 to 1991, offering a compelling balance of performance, reliability, and ease of installation. Its primary advantages improved spark consistency, extended lifespan, and compatibility with other modifications make it a strong choice for riders looking to restore or enhance their bike s ignition system. However, the higher cost compared to stock coils, potential compatibility issues with aftermarket parts, and the need for basic mechanical knowledge are factors to consider.

For riders who prioritize long-term reliability and performance over cost savings, the WSM coil is an excellent investment. It s particularly well-suited for bikes with high mileage, those running other performance upgrades, or those experiencing frequent ignition-related issues. If your bike is in good condition and the stock coil is still reliable, the upgrade may not be urgent, but it s a wise precaution for those planning to keep their Yamaha running smoothly for years to come.

---

If you re experiencing misfires, poor starting, or sluggish performance in your Yamaha 200/250/350, upgrading to the WSM coil is highly recommended. It s a straightforward, cost-effective way to address ignition-related problems and improve overall engine performance. Purchase from a reputable seller (such as the official WSM website or trusted aftermarket dealers) to ensure authenticity and quality.

For those who are unsure whether the stock coil needs replacement, a diagnostic check (such as testing for spark or resistance) can help determine if the upgrade is necessary. If you re planning other modifications (e.g., carburetors, exhaust, or camshafts), the WSM coil will complement these upgrades by providing a more robust ignition system.

In summary, the WSM coil is a smart investment for Yamaha enthusiasts who want to maintain or enhance their bike s performance without undertaking major repairs.

Details:

Coil Ignition for Yamaha 200 - 250 350 85-91 1UY-82310-41-00: Brand WSM, Part Number 65-250, OEM Cross Reference 1UY-82310-41-00.

part #: 65250 prices

• $30.00-$37.96

specifications electricacompone:

• for models: 200, 250, 350
• for makes: Yamaha
• brand: Wsm
• mpn: 65-250
• part type: Ignition Coil

shipping electricacompone:

• service: USPS Priority Mail
• cost: $12.50
• type: Fixed
• carrier: USPS
• transit: 4-7 Days
• class: Expedited

payments electricacompone:

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

returns electricacompone:

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

seller electricacompone:

• # reviews: 1808
• city: 33770
• rating: 99.6%

general electricacompone:

• ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
• condition: New

offer electricacompone:

• options: Ship-to-home
• availability: In Stock
• started: May 10, 2026
• sold: 0
• quantity: 5

Wsm 65-250 Is Similar To:

• Wsm 65-110 Starter Solenoid For Kawasaki 300 750 93-14 27010-0766 27010-1098 (47% similar) Starter solenoid for Kawasaki 300 - 750 93-14 27010-0766 27010-1098: brand Wsm, part number 65-110, oem cross reference 27010-0766, 27010-1098...(May 9th, 2026)