OEM Grade Piston Kit .040 Oversize Compatible with 1984-2006 Yamaha 25HP 3-Cylinder 2-Stroke Outboard Motor 2.678 68.00mm Bore 6L2-11631-00-97 326764 326765

Piston Kit .040 Oversize Compatible with 1984-2006 Yamaha 25HP 3-Cylinder 2-Stroke Outboard 2.678" (68.00mm) Bore
Direct replacement .040 oversize piston kit for 1984 through 2006 Yamaha 3-cylinder 2-stroke outboard motors with 2.638" (67mm) standard bore. Fits 25HP models including 25D, 25E, 25MH, 25N, and C25 commercial variants. Kit includes cast aluminum piston machined to 2.678" (68.00mm) bore (.040 oversize over 2.638" standard), piston ring set, wrist pin, and circlip retainers for a complete single-cylinder rebuild. Symmetrical piston design fits all cylinders — order 3 kits for complete rebuild.

OEM CROSS-REFERENCE PART NUMBERS:
• 6L2-11631-00-97 (standard reference)
• 326764 (wrist pin)
• 326765 (circlip retainers)

SPECIFICATIONS:
• Type: Piston Kit with Rings
• Size: .040 Oversize
• Bore: 2.678" (68.00mm) (.040 oversize over 2.638" standard)
• Engine: Inline 3-Cylinder 2-Stroke Carbureted
• Horsepower: 25HP
• Piston Type: Symmetrical (fits all cylinders)
• Kit Contents: Piston, Ring Set, Wrist Pin, Circlip Retainers
• Material: Cast Aluminum

APPLICATIONS:
• 25HP 3-Cylinder 2-Stroke (1984-2006)
• Yamaha 25D / 25E / 25MH / 25N
• Yamaha C25 Commercial Models

NOTES:
• Symmetrical piston — same piston fits all cylinders
• Order 3 kits for complete 3-cylinder engine rebuild

⚠️ Verify OEM part number from your original engine before ordering.