Yamaha Motor Co., Ltd. 846-11611-00-00 Piston Ring

Description:

The Yamaha 846-11611-00-00 Piston Ring is a combustion sealing component used in snowmobile engine piston and cylinder systems. Commonly installed in Yamaha vintage snowmobiles such as EX340, EX440, and GP338 models to maintain compression and control oil within the cylinder. Maintenance teams and engine technicians use this part for repair, replacement, and engine rebuild applications to restore proper combustion performance.

Applications:

The Yamaha 846-11611-00-00 Piston Ring is used in Yamaha engine assemblies where proper sealing between the piston and cylinder wall is critical for efficiency and durability. It is commonly found in Yamaha snowmobiles from the 1970s era, including EX340 and EX440 models, functioning as a compression ring to minimize blow-by and regulate lubrication within the combustion chamber. This component is essential during top-end rebuilds to ensure stable engine performance and consistent power output.

Technical Specifications:

• Brand: Yamaha
• Part Number: 846-11611-00-00
• Product Type: Piston ring
• Function: Seals combustion chamber and controls oil distribution
• Application: Snowmobile engine piston and cylinder system
• Fitment: Yamaha EX340, EX440, GP338 and similar models
• Ring Type: Compression ring (standard size)
• Material: Hardened steel or cast iron alloy
• Mounting Location: Piston groove within cylinder assembly
• System Role: Maintains compression and reduces blow-by
• Condition: OEM (new/NOS commonly available)
• OEM Status: Genuine Yamaha replacement component

Common Replacements:

• Yamaha 846-11611-01-00
• Yamaha 838-11611-00-00
• Yamaha 8F3-11611-00-00