YAMAHA 8H9-11635-00 Ovation Piston Nos 0.25 O.s.

( Manufacturer Part Number: 8H9-11635-00 ), ( Part Type: Piston ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: J8 Crp1-n Buk 62 )

Review YAMAHA Ovation 0.25.s. Piston Nos fits ENTICER EXCEL 1979–1990

The Yamaha Enticer Excel Ovation 0.25 O.S Piston Nos. are replacement pistons designed for Yamaha outboard motors produced between the years 1979 and 1990, specifically modeled after the 8H9-11635-00 series. These pistons are an essential component of the engine, responsible for transmitting the force of the combustion process to the crankshaft, thereby generating power.

Each piston is meticulously crafted using high-quality materials that ensure durability and reliability. The Ovation series pistons feature a 0.25-inch stroke length, making them suitable for specific applications within the Yamaha 8H9-11635-00 outboard motor series. The piston design incorporates a compression ratio that optimizes engine performance, enhancing the overall efficiency of the motor.

These replacement pistons are engineered to be a direct fit for the original equipment, ensuring a seamless installation process. Each piston comes complete with a piston pin and rings, minimizing the need for additional purchases. The piston pin is made from strong, corrosion-resistant material, while the rings are designed to provide an excellent seal, ensuring efficient combustion and optimal engine performance.

The Yamaha Enticer Excel Ovation 0.25 O.S Piston Nos. boast a superior finish, ensuring a smooth operation of the engine. The piston skirts are designed with an optimized shape to minimize frictional losses and improve engine efficiency. The piston crowns are engineered with precision to provide optimal combustion efficiency, enhancing the overall power output of the motor.

These pistons are an excellent choice for boat owners seeking to maintain the performance and longevity of their Yamaha outboard motors. They offer an affordable solution for those in need of replacing worn or damaged pistons, ensuring a reliable and efficient operation of their engine. By investing in the Yamaha Enticer Excel Ovation 0.25 O.S Piston Nos., boat owners can enjoy peace of mind knowing that they have the best replacement parts for their Yamaha outboard motor.

Pros and Cons of Buying Yamaha 8H9-19635-00 1979-1990 Enticer Excel Ovation 0.25 O.S Piston Nos

The Yamaha 8H9-19635-00 1979-1990 Enticer Excel Ovation 0.25 O.S Piston Nos are replacement pistons for two-stroke outboard motors. In this analysis, we will discuss the potential advantages and disadvantages of purchasing these pistons.

1. High-Quality Material: Yamaha is a reputable brand known for manufacturing durable and long-lasting products. These pistons are made of high-quality materials, ensuring excellent performance and reliability.

2. Enhanced Engine Performance: By replacing worn-out pistons with new ones, the engine's performance can be significantly improved. This can result in increased horsepower, better fuel efficiency, and smoother operation.

3. Cost-Effective: Although purchasing new pistons can be an investment, it can save money in the long run. A poorly performing engine can lead to increased fuel consumption and potential engine damage, which can result in more expensive repairs.

1. Cost: The cost of these pistons can be a significant investment, especially for those on a budget. However, considering the potential benefits, such as improved engine performance and cost savings in the long run, the investment may be worthwhile.

2. Installation Complexity: Installing the pistons requires specialized knowledge and tools. If you are not experienced in outboard motor repair, it may be best to hire a professional to ensure proper installation.

3. Availability: These pistons may not be readily available at local retailers or online marketplaces. You may need to contact Yamaha directly or search through specialized marine parts suppliers to find them.

In conclusion, the decision to purchase Yamaha 8H9-19635-00 1979-1990 Enticer Excel Ovation 0.25 O.S Piston Nos depends on various factors, including your budget, technical expertise, and engine performance requirements. While the investment can be significant, the potential benefits, such as improved engine performance and cost savings in the long run, make it a worthwhile consideration for those who rely on their outboard motor for recreational or commercial activities.

If you decide to purchase these pistons, ensure that you have the necessary tools and expertise to install them properly. Alternatively, consider hiring a professional to ensure proper installation and optimal engine performance. Additionally, consider purchasing these pistons from a reputable supplier to ensure authenticity and quality.

Details:

Spotlight: A Day Inside . This New Old Stock NOS Yamaha OEM piston, part number 8H9-11635- is a 0.25mm oversize replacement for 1979-1990 Enticer, Excel III, and Ovation snowmobiles. Piston NOS 8H9-11635-00: 1979-1990 Yamaha Enticer Excel Ovation 0.25.S. Yamaha MX / ATV.

Fits: This 0.25mm oversize piston fits various Yamaha snowmobile model's including the Enticer, Excel III, and Ovation from 1979-1990. Perfect for engine rebuilds requiring a slight bore increase. Yamaha Cruisers. The image to watch on YouTube.

part #: 8h91163500 prices

• $39.95-$50.48

specifications enginesnowmobile:

• for models: Enticer, Excel
• for makes: Yamaha
• for years: 1979-1990
• mpn: 8h9-11635-00
• part type: Piston
• country of origin: United States
• manufacturer warranty: Unspecified Length
• storage location: J8 Crp1-n Buk 62

offer enginesnowmobile:

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

payments enginesnowmobile:

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

seller enginesnowmobile:

• city: Odessa, Florida
• # reviews: 215820
• rating: 99.3%

shipping enginesnowmobile:

• type: Fixed
• service: FedEx Ground / FedEx Home Delivery, USPS Priority Mail, FedEx 2Day, Overnight
• cost: $0.00
• transit: 3-6 Days
• class: Standard, Expedited, One-day
• carrier: FedEx, USPS

general enginesnowmobile:

• condition: New other see details
• Snowmobile Parts > Engines Components > Snowmobile Engine Components

returns enginesnowmobile:

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

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