1. Snowmobile Parts Items
  2. sku: 11309188076668721
  3. YAMAHA 878-85550-10-00

YAMAHA 878-85550-10-00 Flywheel 338

fits model: Gpx, Srx, 433, 340, 440. make: Yamaha. year: 1974–1976.

878-85550-10-00 Yamaha Oem Used Snowmobile Flywheel 1974 1975 Gpx 338 433 1976 Srx 340 440

( Type: Flywheel ), ( Country Of Origin: Japan ), ( UPC: 878855501000 )

Review YAMAHA Oem Used Snowmobile Flywheel 338 fits GPX SRX 433 340 440 1974–1976

Introducing the Yamaha GPX 338, SRX 340, and 440 models from the year 1974 to 1976, all featuring the same high-performance 85550-10-00 flywheel. This flywheel is a critical component of the outboard motor's power delivery system, providing efficient energy transfer from the crankshaft to the propeller.

Measuring 19.7 inches in diameter and 15.7 inches in width, this cast iron flywheel is precisely balanced for smooth and stable engine operation. Its heavy-duty construction ensures durability and reliability, even in the most demanding marine conditions.

The flywheel is also designed to work seamlessly with the engines' various power output specifications. For the GPX 338 model, this flywheel delivers an impressive 338 horsepower at 5,800 rpm. The SRX 340 model boasts a slightly higher output of 340 horsepower at the same rpm, while the SRX 440 model takes things up a notch with a massive 440 horsepower at 5,500 rpm.

The flywheel's surface is treated with a special coating to reduce friction and wear, ensuring long-lasting performance and minimal maintenance. Its robust design also accommodates the engines' automatic transmission systems, allowing for smooth and effortless gear changes.

The Yamaha 85550-10-00 flywheel is a testament to the brand's commitment to engineering excellence and high-performance marine engines. Whether you're cruising the open waters or competing in high-speed races, this flywheel delivers the power and reliability you need to get the most out of your Yamaha GPX, SRX, or other compatible outboard motor.

Pros and Cons of Buying a Yamaha GPX 338, SRX 340, or 440 with a 1974-1975 Flywheel

1. Background:

These models, the GPX 338, SRX 340, and GPX 440, are part of Yamaha's watercraft lineup from the late 1970s. The 1974-1975 flywheel is a common part for these models.

2. Pros:

a. Historical Value: Owning a vintage watercraft like these Yamahas can be an enjoyable hobby for enthusiasts.

b. Affordability: Compared to newer models, these vintage watercraft are often more affordable.

c. Simple Design: The straightforward design of these watercraft makes them easier to maintain and repair.

3. Cons:

a. Performance: These models may not offer the same level of performance as newer watercraft.

b. Safety Features: Vintage watercraft may lack modern safety features, such as efficient fuel systems, reliable ignition systems, and effective braking systems.

c. Maintenance and Repairs: Obtaining parts for these vintage watercraft can be challenging and costly. It may require extensive research and networking within the community.

4. Ending Conclusion:

Buying a Yamaha GPX 338, SRX 340, or 440 with a 1974-1975 flywheel can be a rewarding experience for those who appreciate vintage watercraft. However, it's essential to be aware of the potential challenges, such as performance limitations, lack of modern safety features, and difficulty in obtaining parts. Prospective buyers should be prepared for the associated costs and dedication required to maintain these watercraft.

5. Recommendation:

If you're interested in purchasing a vintage Yamaha watercraft, it is recommended that you perform thorough research, consult with experts and enthusiasts, and consider the potential costs and time commitment involved. It's also essential to ensure that the watercraft is in good condition and has all necessary repairs completed before taking it on the water.

Details:

Please review pictures carefully as they are a large part of the condition. 1974-1975 GPX 433. Used OEM Yamaha flywheel in good used condition, overall the magnets are fair condition and this is a usable.

1974-1975 GPX 338. OEM # 878-85550-10-00. Has some surface rust and cosmetic wear but overall in fair condition - please examine photos carefully as they are the best of.

part #: 878855501000 prices

  • $49.95-$75.00

specifications snowpar:

  • for models: Gpx, Srx, 433, 340, 440
  • for makes: Yamaha
  • for years: 1974-1976
  • type: Flywheel
  • country of origin: Japan
  • upc: 878855501000

offer snowpar:

  • started: May 15, 2026
  • sold: 0
  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • quantity: 1

returns snowpar:

  • policy: No Returns

general snowpar:

  • Parts Accessories > Snowmobile Parts > Other Parts
  • condition: Used

payments snowpar:

  • credit card: Visa
  • other
  • wallet: Google-pay

shipping snowpar:

  • class: Standard, Expedited
  • carrier: USPS, UPS
  • service: USPS Ground Advantage, UPS Ground, USPS Priority Mail
  • cost: $9.04
  • transit: 4-11 Days
  • type: Calculated

seller snowpar:

  • rating: 100.0%
  • # reviews: 1052
  • city: Cornell, Wisconsin
for models: gpx, srx, 433, 340, 440, for makes: yamaha, for years: 1974-1976, type: flywheel, country of origin: japan,
category: snowmobile parts > parts, sku: 11309188076668721,

Yamaha 878-85550-10-00 Is Similar To:

snowpar logo
2 offers $49.95–$75.00 USD
  • Offer #1: $75.00 price + $0.00 shipping estimate = $75.00* total. Yamaha OEM Flywheel Magneto 1973-1975 Sno-Jet.FREE SHIPPING
  • Offer #2: $49.95 price + $9.04 shipping estimate = $58.99* total. OEM # . 1974-1975 GPX 338.+$9.04 shipping

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