Yamaha 85L-11631-00-96, 72 3441-3 Piston

Description:

The Yamaha 85L-11631-00-96 Piston is a combustion component used in snowmobile engine piston and cylinder systems. Commonly installed in Yamaha Ovation CS340 and similar 340cc snowmobile engines to compress the air-fuel mixture for combustion. Maintenance teams and engine technicians use this part for repair, rebuild, and replacement of worn piston assemblies to restore engine compression and performance.

Applications:

The Yamaha 85L-11631-00-96 Piston is used in Yamaha snowmobile engine assemblies where efficient combustion and compression are critical for operation. It is commonly found in Yamaha Ovation CS340 models (1989–2000 era), functioning within the cylinder to convert combustion pressure into mechanical motion. This component is essential during engine rebuilds and maintenance cycles to restore proper tolerances, reduce blow-by, and ensure consistent engine output in cold-weather conditions.

Technical Specifications:

• Brand: Yamaha
• Part Number: 85L-11631-00-96
• Product Type: Engine piston (standard size)
• Function: Compresses air-fuel mixture and transfers combustion force
• Application: Snowmobile engine piston and cylinder system
• Fitment: Yamaha Ovation CS340 and related 340cc models
• Configuration: Standard bore (STD) piston
• Material: Aluminum alloy for heat resistance and durability
• Mounting Location: Cylinder bore within engine block
• System Role: Converts combustion energy into mechanical motion
• Assembly Note: Typically used with piston rings, wrist pin, and clips (sold separately or in kits)
• OEM Status: Genuine Yamaha replacement component

Common Replacements:

• Yamaha 8G8-11631-01-96
• Yamaha 8V0-11631-00-96
• Yamaha 3V6-11631-00-96