Port Side Standard Bore Piston Kit with Rings Compatible with 2000-2012 Mercury Mariner V6 DFI OptiMax 200HP-250HP Outboard Motor Sport Boat 3.625 Bore 785-9737T9 326764

Port Side Piston Kit Standard Size Compatible with 2000-2012 Mercury Mariner Sea-Doo 200HP-250HP V6 DFI OptiMax 3.625" Bore
Direct replacement standard size port side piston kit for 2000 through 2012 Mercury, Mariner, and Sea-Doo V6 DFI OptiMax direct fuel injection 2-stroke outboard motors and sport boats with 3.625" standard bore. Kit includes cast aluminum piston machined to 3.625" bore, piston ring set, wrist pin, and circlip retainers for a complete single-cylinder rebuild. Port side only — order matching starboard piston kit separately.

OEM CROSS-REFERENCE PART NUMBERS:
• 785-9737T9 (port standard piston)
• 785-9737A10 (.015 OS reference)
• 785-9737A8
• 326764 (wrist pin)
• 326765 (circlip retainers)

SPECIFICATIONS:
• Type: Port Side Piston Kit with Rings
• Size: Standard
• Bore: 3.625" Standard
• Engine: V6 DFI OptiMax Direct Fuel Injection 2-Stroke
• Horsepower: 200HP-250HP
• Side: Port (Left)
• Kit Contents: Piston, Ring Set, Wrist Pin, Circlip Retainers
• Material: Cast Aluminum

APPLICATIONS:
• 200HP V6 DFI OptiMax (2000-2012)
• 225HP V6 DFI OptiMax (2000-2012)
• 250HP V6 DFI OptiMax (2000-2012)
• Sea-Doo Sport Boats with Mercury V6 DFI OptiMax

NOTES:
• This is the PORT side piston only — order matching starboard piston separately
• Kit is for ONE cylinder — V6: order 3 port + 3 starboard pistons

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