420850638 Exhaust Manifold Gasket for Sea-Doo SP 720 1997

Exhaust Manifold Gasket for Sea-Doo SP 720

This exhaust manifold gasket is a direct-fit sealing component for the Sea-Doo SP 720, cross-referenced to OEM part number 420850638, designed to seal the junction between the exhaust manifold and engine block.

Overview

This exhaust manifold gasket for Sea-Doo SP 720 delivers a reliable seal at the manifold-to-engine mating surface, preventing exhaust leaks and keeping exhaust gases flowing where they belong. Made to match OEM part 420850638, it is a straightforward replacement for worn or blown gaskets. Engineered for 720cc Rotax-powered watercraft, this exhaust manifold gasket is a practical choice for routine maintenance and rebuilds.

Built For Performance

• Cross-referenced to OEM part number 420850638 for direct fitment
• Constructed from high-temperature exhaust gasket material
• Seals the exhaust manifold-to-engine junction against leaks
• Resists heat cycling and vibration common to personal watercraft
• Designed specifically for the 720cc Rotax engine platform
• Sold as a single replacement gasket

Fits These Machines

• for Sea-Doo SP 720 (1997)
• for Sea-Doo models equipped with the 720cc Rotax engine and matching manifold flange

On-The-Job Use

• Exhaust manifold replacement and rebuilds
• Leak repair at the manifold sealing surface
• Top-end engine servicing on 720cc watercraft
• Routine gasket refresh during off-season maintenance

Specs At A Glance

Good To Know

Q: Does this gasket fit my Sea-Doo SP 720? A: It is cross-referenced to OEM part 420850638 and designed for the 1997 Sea-Doo SP 720 with the 720cc engine. Verify your part number and manifold flange before ordering.

Q: Should I replace other gaskets at the same time? A: When servicing the exhaust manifold, inspecting and replacing related gaskets is good practice to avoid repeat teardown. Confirm the additional parts you need match your model year.

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