Crankshaft Oil Seal Kit for Sea-Doo GSI 720 1997

Crankshaft Oil Seal Kit for Sea-Doo GSI 720

This crankshaft oil seal kit is a direct replacement sealing set built for the 1997 Sea-Doo GSI 720, keeping crankcase oil where it belongs and water out of the engine internals.

Overview

This crankshaft oil seal kit for Sea-Doo is made to reseal the crankcase on the 720 engine found in the 1997 GSI. It replaces worn or leaking seals that let oil escape and moisture enter, restoring proper crankcase pressure and lubrication. Riders and mechanics rebuilding a 720 top or bottom end will find this crankshaft oil seal kit a practical part of the job.

Built For Performance

• Direct-fit seals sized for the Sea-Doo 720 crankshaft
• Resistant to oil, fuel, and marine moisture exposure
• Helps maintain correct crankcase pressure
• Prevents oil from escaping into the bilge or water from entering the case
• Suited to rebuild and reseal work on a 1997 GSI 720

Fits These Machines

• for Sea-Doo GSI 720, 1997

On-The-Job Use

• Crankshaft reseal during a 720 engine rebuild
• Fixing oil leaks at the crankcase on a 1997 GSI
• Routine maintenance before the riding season

Specs At A Glance

Good To Know

Q: Does this kit service both sides of the crankshaft? A: It is a crankshaft oil seal kit intended to reseal the crankcase on a 720 engine, and the seals supplied cover the crankshaft sealing positions for that application. Confirm the quantity needed against your engine layout before ordering.

Q: Can I install these seals without splitting the cases? A: Crankshaft oil seals on a 720 typically require access to the crankcase, so most installs happen during a rebuild rather than as an external-only job. Have a service manual on hand for torque and reassembly steps.

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