Yamaha Motor Co., Ltd. 823-11635-00-00 Piston Assembly

Description:

The Yamaha 823-11635-00-00 Piston is a combustion component used in small engine piston and cylinder systems. Commonly installed in Yamaha vintage snowmobiles such as GP292 and SM292 models to compress the air-fuel mixture for engine operation. Maintenance teams and engine technicians use this part for repair, rebuild, and replacement of worn piston assemblies to restore proper compression and performance.

Applications:

The Yamaha 823-11635-00-00 Piston is used in Yamaha engine assemblies where efficient combustion and compression are critical for performance and reliability. It is commonly found in Yamaha vintage snowmobiles (1970s-era GP292, SM292, and GS292 platforms), operating within the cylinder to convert combustion pressure into mechanical motion. This component is frequently used during engine rebuilds, including oversize (.25mm O/S) applications to restore cylinder tolerances after wear.

Technical Specifications:

• Brand: Yamaha
• Part Number: 823-11635-00-00
• Product Type: Engine piston
• Function: Compresses air-fuel mixture and transfers combustion force
• Application: Snowmobile engine piston and cylinder system
• Fitment: Yamaha GP292, SM292, GS292 and similar models
• Size: Available in oversize variants (e.g., 0.25mm O/S)
• Material: Cast aluminum alloy for heat resistance and durability
• Mounting Location: Cylinder bore within engine block
• System Role: Converts combustion energy into mechanical motion
• Supersession: Replaced by 823-11635-01-00
• OEM Status: Genuine Yamaha replacement component

Common Replacements:

• Yamaha 823-11635-01-00
• Yamaha 820-11635-00-00
• Yamaha 335-11635-00-00