66V-11311-00-94 Cylinder for Yamaha GP 1200 2002 Nikasil Plated

Nikasil Plated Cylinder for Yamaha

This Nikasil plated cylinder for Yamaha, OEM cross-reference 66V-11311-00-94, is a replacement engine cylinder that restores compression and proper piston travel on compatible Yamaha marine powerplants.

Overview

This Nikasil plated cylinder for Yamaha is a direct-fit engine component that houses the piston and manages combustion for the 1200cc powerplant. The Nikasil plating on this cylinder for Yamaha resists wear and keeps bore dimensions stable under sustained load. It suits riders rebuilding a top end or replacing a scored, out-of-spec cylinder.

Built For Performance

• Nikasil plated bore for reduced friction and long service life
• Cross-references OEM part number 66V-11311-00-94 for straightforward identification
• Cast and machined to factory bore dimensions for reliable piston fit
• Coating resists scuffing better than unplated aluminum bores
• Engineered for the thermal demands of a 1200cc two-stroke powerplant

Fits These Machines

• for Yamaha GP 1200 (2002)

On-The-Job Use

• Top-end rebuilds after a seized or scored piston
• Routine cylinder replacement on high-hour personal watercraft
• Restoring compression on a tired 1200cc engine
• Preventive service before a full riding season

Specs At A Glance

Good To Know

Q: What does Nikasil plating mean for this cylinder? A: Nikasil is a hard nickel-silicon-carbide coating applied to the bore, which cuts friction and resists wear far better than a bare aluminum surface. That hardness is why plated cylinders hold tolerances longer between rebuilds.

Q: Can I install this cylinder without checking piston clearance? A: Always measure piston-to-cylinder clearance and ring end gap before assembly, since bore condition and piston wear vary. Skipping those checks risks a repeat seizure shortly after startup.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.