Crankshaft Oil Seal Kit for Sea-Doo GT 580 1990-1991

Crankshaft Oil Seal Kit for Sea-Doo GT 580

This crankshaft oil seal kit is a replacement sealing set built for the 1990-1991 Sea-Doo GT 580, sealing the crankcase so oil stays in and water stays out of the engine.

Overview

This crankshaft oil seal kit for Sea-Doo is designed to reseal the crankcase on the 580 engine used in the 1990-1991 GT. It replaces tired seals that weep oil or allow moisture into the case, helping restore proper lubrication and crankcase pressure. Anyone rebuilding or servicing a GT 580 will find this crankshaft oil seal kit a useful part to have on the bench.

Built For Performance

• Seals sized to the Sea-Doo 580 crankshaft application
• Withstands oil, fuel, and constant marine moisture
• Helps hold correct crankcase pressure
• Reduces oil loss and water intrusion at the crank seals
• Suited to rebuild and reseal work on a 1990-1991 GT 580

Fits These Machines

• for Sea-Doo GT 580, 1990
• for Sea-Doo GT 580, 1991

On-The-Job Use

• Crankshaft reseal during a 580 engine rebuild
• Chasing oil leaks at the crankcase on a GT 580
• Pre-season maintenance before hitting the water

Specs At A Glance

Good To Know

Q: Will this kit work on both the 1990 and 1991 GT 580? A: It is listed for the 1990-1991 Sea-Doo GT 580, so it covers both model years in that range. Verify your engine code and serial number before ordering to be certain.

Q: Do I need to pull the engine to replace these seals? A: Crankshaft oil seals on a 580 usually call for crankcase access, so the work is normally done during a rebuild. Follow a service manual for disassembly, seal seating, and torque values.

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