Your Professional Outboard Piston Supplier
Hangzhou Starwave Technology Co., Ltd. is a professional enterprise focusing on the full-range supply of outboard motor parts. Its core competitiveness comes from our own physical factory-a precision manufacturing base with decades of experience in manufacturing core components of internal combustion engines.We are highly compatible with nearly 100 models of global mainstream outboard motor brands such as Mercury, Yamaha, Suzuki and Honda, and our services cover diverse customer groups including professional repair shops, equipment distributors and overseas traders.
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![6ET-11631-00-B0 85.9MM Piston Kit for Yamaha 1800cc]()
6ET-11631-00-B0 85.9MM Piston Kit for Yamaha 1800ccOEM: 6ET-11631-00-B0
Bore: 86MM
Horsepower: 115HP
Engine type: 4 stroke -
![6CE-11631-00 96MM Piston Kit for Yamaha 200-300 HP 4 Stroke]()
6CE-11631-00 96MM Piston Kit for Yamaha 200-300 HP 4 StrokeOEM: 6CE-11631-00
Bore: 96MM
Horsepower: 200-300
Engine type: 4 stroke -
![66V-11631-00 79.9MM Piston Kit for Yamaha 800-1200R 155HP 4 Stroke]()
66V-11631-00 79.9MM Piston Kit for Yamaha 800-1200R 155HP...OEM: 66V-11631-00
Bore: 79.9MM
Horsepower: 155HP
Engine type: 4 stroke -
![68V-W1164-02 79MM Piston Kit for Yamaha 115 HP 4 Stroke]()
68V-W1164-02 79MM Piston Kit for Yamaha 115 HP 4 StrokeOEM: 68V-W1164-02
Bore: 79MM
Horsepower: 115HP
Engine type: 4 stroke -
![6ET-11631-00-B0 Of Yamaha 1800cc]()
6ET-11631-00-B0 Of Yamaha 1800ccOEM: 6ET-11631-00-B0
Bore: 86MM
Horsepower: 115HP
Engine type: 4 stroke -
![6DX-11631-00-93 94MM Piston Kit for Yamaha 250hp 4 Stroke]()
6DX-11631-00-93 94MM Piston Kit for Yamaha 250hp 4 StrokeOEM: 6DX-11631-00-93
Bore: 94MM
Horsepower: 250HP
Engine type: 4 stroke -
![6DX-11642-00-93 94MM Piston Kit for Yamaha F250 4 Stroke]()
6DX-11642-00-93 94MM Piston Kit for Yamaha F250 4 StrokeOEM: 6DX-11642-00-93
Bore: 94MM
Horsepower: 250HP
Engine type: 4 stroke -
![61X-11631-02-93 81MM Piston Kit for Yamaha 700-1100cc 2 Stroke Motor]()
61X-11631-02-93 81MM Piston Kit for Yamaha 700-1100cc 2 S...OEM: 61X-11631-02-93
Bore: 81MM
Horsepower: 700/1100CC
Engine type: 2 stroke -
![6E7-11631-00 56MM Piston Kit for Yamaha 9.9HP 15HP 2 Stroke]()
6E7-11631-00 56MM Piston Kit for Yamaha 9.9HP 15HP 2 StrokeOEM: 6E7-11631-00
Bore: 56MM
Horsepower: 9.9HP 15HP
Engine type: 2 stroke -
![688-11631-00 82MM Piston Kit for Yamaha 75HP 85HP 90HP 2 Stroke]()
688-11631-00 82MM Piston Kit for Yamaha 75HP 85HP 90HP 2 ...OEM: 688-11631-00
Bore: 82MM
Horsepower: 75HP 85HP 90HP
Engine type: 2 stroke -
![705-850026T3 76MM Piston Kit for Mercury 30HP 40HP 2 Stroke 2 Cylinder Model]()
705-850026T3 76MM Piston Kit for Mercury 30HP 40HP 2 Stro...OEM: 705-850026T3
Bore: 76MM
Horsepower: 30HP 40HP
Engine type: 2 stroke -
![767-879878T5 65MM Piston Kit for Mercury 15-25 HP 2Cyl Pro]()
767-879878T5 65MM Piston Kit for Mercury 15-25 HP 2Cyl ProOEM: 767-879878T5
Bore: 65MM
Horsepower: 15-25HP
Engine type: 2 stroke
Why Choose Us
R&D Team
The R&D center of Hangzhou Starwave Technology Co., Ltd. is built around a highly skilled technical team, featuring a structure characterized by senior leadership combined with deep professional specialization, ensuring strong technical expertise, efficient innovation, and the ability to develop high-quality products that meet international market standards.
Our Service
We provide dedicated one-on-one technical support, with our professional technical team available 24/7 and a guaranteed response time of within 2 hours, ensuring efficient communication, rapid problem resolution, and reliable support throughout the entire cooperation process.
Our Certificate
As a national high-tech enterprise, we hold IATF 16949 and ISO 9001 system certifications, along with multiple patents, demonstrating our strong commitment to quality management, technological innovation, and industry-leading standards.
Production Market
Our products are exported to a wide range of international markets, including South American countries such as Brazil and Argentina, Southeast Asian countries, African nations, Europe, and the United States, reflecting our strong global reach and the trust of customers worldwide.
Enhanced Power Performance
The reciprocating motion of Outboard Piston ensures uniform mixing of fuel and air, improving engine power. Compared to other metals, aluminum pistons are lighter, increasing engine speed while reducing fuel consumption.
Improved Heat Dissipation
Aluminum alloy’s excellent thermal conductivity quickly transfers combustion heat to the cylinder walls, where the cooling system dissipates it. This helps maintain engine stability and prevents overheating failures.
Increased Wear Resistance
By raising silicon content and applying advanced surface coatings, aluminum pistons achieve superior wear resistance. Even under intense engine operation and frequent contact with cylinder walls, they resist wear and corrosion, extending engine life.
Product Paramenters
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OEM |
66V-11631-00 |
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Bore |
79.9MM |
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Replaces: |
Product Type: Piston Kit / Specifications: / Total Diameter: 79.9 Mm / Bore Size: Standard / Replaces: / Oem Interchange Part Number : 66V-11631-00-A0 |
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Applications: |
Make & Model(S): / Yamaha: / GP 800 1998-2000 |
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Piston Kit - Source: |
Aftermarket |
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Original: |
Lishui, China |
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Material: |
AC9A Aluminum |
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Payment term: |
TT, LC |
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Delivery date: |
Negotiable |
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Packing: |
Export standard |
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Market: |
Asia/South America/Europe |
Piston: The piston can be divided into three parts—the piston crown, piston head, and piston skirt.The piston crown forms part of the combustion chamber and is typically flat or concaveThe section from the crown down to the last piston ring groove is called the piston head.Everything below the ring grooves is referred to as the piston skirt.
Piston Rings: These are elastic rings fitted into the piston grooves. They are metal rings with significant outward expansion, installed in corresponding grooves. Through reciprocating and rotational motion, piston rings create a seal between the cylinder wall and the ring groove via gas or liquid pressure differences. Their most critical function is sealing.
Piston Pin: A cylindrical pin mounted in the piston skirt, passing through the small end of the connecting rod to link the piston and connecting rod, transferring gas force from the piston to the rod.
Circlip: Secures the piston pin at both ends.
Installation Tips for Outboard Piston
Proper tightness is crucial. Heat the piston evenly in water or oil to 90°C–100°C, then insert the oil-coated pin in the correct direction into the piston pin hole and connecting rod bushing.Piston Ring Installation:Pay attention to the position and order of each ring during assembly.
Production Process
Mould
Forging
Blank
Heat Treatment
Processing
Coating
Washing
Checking
Packing
Shipping
We are one of the most credible outboard piston manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to wholesale outboard piston for sale here from our factory. For quotation, contact us now.
