90430-13909-00 Exhaust Gasket for Yamaha SuperJet 650 1990-1993

Exhaust Gasket for Yamaha

This exhaust gasket, OEM cross-reference 90430-13909-00, seals the exhaust joint on Yamaha SuperJet 650 models so exhaust gases exit through the pipe rather than leaking at the flange.

Overview

This exhaust gasket is a direct-fit sealing component for the Yamaha SuperJet 650, covering model years 1990 through 1993. The gasket sits between the exhaust flanges and compresses under heat to form a tight seal. It suits riders servicing the exhaust on their SuperJet 650 or completing a top-end rebuild.

Built For Performance

• OEM cross-reference 90430-13909-00 for straightforward part matching
• Engineered to seal under high exhaust temperatures
• Fits the exhaust joint on Yamaha 650-series stand-up engines
• Handles the heat cycling and vibration of marine exhaust systems
• Straightforward replacement during exhaust service

Fits These Machines

• for Yamaha SuperJet 650, 1990-1993

On-The-Job Use

• Exhaust flange resealing during engine rebuilds
• Routine replacement when chasing exhaust leaks
• Seasonal maintenance on older Yamaha 650 stand-up watercraft
• Restoring a correct seal after exhaust pipe removal

Specs At A Glance

Good To Know

Q: Is this an original Yamaha part? A: This is an aftermarket exhaust gasket that cross-references OEM number 90430-13909-00. It is not an original Yamaha-branded product.

Q: How many gaskets do I need for one exhaust joint? A: Most exhaust joints use a single gasket, though you should check your service manual for the exact count. Replacing all gaskets at the joint at once is good practice.

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