| OEM | |
| Vehicle Type/Engine Model | 3.5HP |
| Cylinder Diameter | 47mm |
| Pin Hole | 10.5mm |
Marine engines run hard. They sit at high RPMs for hours, deal with saltwater corrosion, and work under constant load. T...
READ MORE| OEM | |
| Vehicle Type/Engine Model | 3.5HP |
| Cylinder Diameter | 47mm |
| Pin Hole | 10.5mm |
| OEM | 6E7-11631-00 682-11610-01-00 ring |
| Vehicle Type/Engine Model | 15HP |
| Cylinder Diameter | 56mm |
| Pin Hole | 14mm |
| OEM | 6F5-11631-02-95 |
| Vehicle Type/Engine Model | 6F5-11631-02-95 |
| Cylinder Diameter | 78mm |
| OEM | 6H3-11631-01-96 |
| Vehicle Type/Engine Model | 60HP |
| Cylinder Diameter | 72mm |
| Pin Hole | 19.9mm |
| OEM | 6R5-11631-01-93 |
| Vehicle Type/Engine Model | 6R5-11631-01-93 |
| Cylinder Diameter | 90mm |
| Pin Hole | 21.5mm |
| OEM | 6R5-11631-11-93 |
| Vehicle Type/Engine Model | 6R5-11631-11-93 |
| Cylinder Diameter | 90mm |
| Pin Hole | 23.08mm |
| OEM | 6R5-11642-01-93 |
| Vehicle Type/Engine Model | 6R5-11642-01-93 |
| Cylinder Diameter | 90mm |
| Pin Hole | 21.5mm |
| OEM | 6R5-11642-11-93 |
| Vehicle Type/Engine Model | 6R5-11642-11-93 |
| Cylinder Diameter | 90mm |
| Pin Hole | 23.08mm |
| OEM | 64D-11631-02-90 |
| Vehicle Type/Engine Model | 64D-11631-02-90 |
| Cylinder Diameter | 90mm |
| Pin Hole | 23.08mm |
| OEM | 64D-11642-02-90 |
| Vehicle Type/Engine Model | 64D-11642-02-90 |
| Cylinder Diameter | 90mm |
| Pin Hole | 23.08mm |
| OEM | 66T-11631-01-93 |
| Vehicle Type/Engine Model | (E)40XMH'14(66TV)(66TK-1168221) E40XWH'14(66TV)(66TK-1168221)(E)40XW'14(66TV)(66TK-1168221)(E)40XWT'14(66TV)(66TK-1168221) |
| Cylinder Diameter | 80mm |
| Pin Hole | 19.9mm |
| OEM | 688-11631-03-94 (STD piston) 688-11603-A0 (STD ring) 688-11635-03 (0.25 piston) 688-11604-A0 (0.25 ring) 688-11636-03 (0.50 piston) 688-11605-A0 (0.50 ring) 663-11633-00 (pin) 688-11634-00 (retaining ring) |
| Vehicle Type/Engine Model | 85HP |
| Cylinder Diameter | 82mm |
| Pin Hole | 19.9mm |
Our outboard engine pistons, designed for Yamaha engines, are constructed from high-strength aluminum alloy and feature advanced heat treatment, resulting in a lightweight design with high-temperature resistance. Precision machining and surface treatment ensure precise piston dimensions and excellent wear resistance, maintaining efficient combustion and stable power output. Whether used in leisure boating, fishing, or long-distance ocean voyages, these pistons provide reliable power and extend engine life.
Ruian Zhengji Motorcycle Parts Co., Ltd. is a custom Outboard Engine Pistons for Yamaha Series manufacturer and OEM Outboard Engine Pistons for Yamaha Series factory, specializing in the research, development, production and sales of pistons for automobiles, motorcycles and outboard engines. In addition to offering standard piston products, we focus on the development of motorcycle modification parts and customized products to meet the diverse needs of our customers.
We possess a complete production chain from blank casting to finished piston manufacturing, equipped with over 200 advanced production machines, including more than 80 high-precision CNC lathes. During the piston manufacturing process, we employ both casting and forging techniques to ensure durability and performance. The forging process provides pistons with greater strength and wear resistance, while the casting process offers higher production efficiency and flexibility.
Marine engines run hard. They sit at high RPMs for hours, deal with saltwater corrosion, and work under constant load. T...
READ MOREYou don't see them. But every time an engine fires, a piston moves. Up and down. Thousands of times a minute. Converting...
READ MOREMarine engines demand components that endure constant operation in harsh conditions. Saltwater exposure. High RPMs. Heav...
READ MOREEngine enthusiasts seeking more power often start with modest modifications. Improved intake systems. Mild camshaft upgr...
READ MORERuian Zhengji Motorcycle Parts Co., Ltd. is a specialized manufacturer engaged in the research, development, production, and sales of pistons for automobiles, motorcycles, and outboard engines.
Cell phone:+86-18858762999 / +86-18858760666
Landline:+86-0577-65108168 / +86-0577-65106111
Fax:+86-0577-65508599
WeChat:+86-18858760666
Email:jinzixiong1999@163.com
Add:No. 21, Jinfeng Road, Cenqi, Tingtian Town, Ruian City, Zhejiang Province, China





