Sea-Doo GSI 720 Crankshaft Assembly for 1997 Models

Crankshaft Assembly for Sea-Doo GSI 720

This crankshaft assembly is a complete rotating assembly that transfers piston motion into drive output on the Sea-Doo GSI 720, listed for the 1997 model year.

Overview

This crankshaft assembly is a core engine component for the Sea-Doo GSI 720, carrying the connecting rods and converting the up and down motion of the pistons into rotation. A sound crankshaft assembly is required for smooth running and reliable power delivery. It suits riders and mechanics rebuilding a 1997 Sea-Doo GSI 720 engine.

Built For Performance

• Complete assembly with crank throws and connecting rods already fitted
• Balanced to reduce vibration through the RPM range
• Machined journals sized for the Sea-Doo GSI 720 main and rod bearings
• Built from durable steel to withstand two-stroke marine engine loads
• Ready for installation after confirming bearing clearances

Fits These Machines

• for Sea-Doo GSI 720 (1997)

On-The-Job Use

• Full engine rebuilds where the original crankshaft is worn or damaged
• Replacing a seized or out of spec crank on a 1997 Sea-Doo GSI 720
• Restoring a personal watercraft engine during off season service
• Bottom end work paired with new bearings and seals

Specs At A Glance

Good To Know

Q: Does this crankshaft assembly include bearings and seals? A: This listing covers the crankshaft assembly itself, and any bearings or seals should be confirmed before ordering. Check what is already fitted and source the rest as needed for your rebuild.

Q: Is this a direct replacement for the 1997 Sea-Doo GSI 720? A: It is listed to fit the 1997 Sea-Doo GSI 720, but engine variations by serial number exist. Verify your engine code and existing crank before purchasing.

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