420260721 Power Valve Water Box Bellow for Sea-Doo SPX 800 1997-1999

Power Valve Water Box Bellow for Sea-Doo

This power valve water box bellow for Sea-Doo is a direct replacement component that connects the water box to the power valve assembly, cross-referencing OEM part number 420260721.

Overview

This power valve water box bellow for Sea-Doo is a replacement rubber bellow that seals the connection between the water box and the power valve on select SPX 800 models. It keeps the exhaust water routing sealed so the power valve operates as intended under load. Built for riders maintaining a 1997 to 1999 Sea-Doo SPX 800 who want a dependable replacement for a worn or cracked bellow.

Built For Performance

• Direct cross-reference to OEM part number 420260721
• Flexible rubber construction absorbs vibration between the water box and valve
• Seals the exhaust water passage to prevent leaks under pressure
• Resists heat and moisture exposure typical of marine exhaust systems
• Simple bolt-on replacement for the original bellow

Fits These Machines

• for Sea-Doo SPX 800 1997
• for Sea-Doo SPX 800 1998
• for Sea-Doo SPX 800 1999

On-The-Job Use

• Routine replacement when the original bellow cracks or hardens
• Exhaust water box service on 800 series engines
• Restoring proper power valve sealing after a rebuild
• Preventive maintenance before the riding season

Specs At A Glance

Good To Know

Q: How do I know if my bellow needs replacing? A: Look for cracks, hardening, or water leaks around the water box connection, since these signs usually mean the bellow has aged out. Replacing it early helps protect the power valve assembly.

Q: Is this an original Sea-Doo part? A: This is a replacement bellow made to cross-reference OEM part 420260721, not an original factory item. Confirm your model and serial number before ordering.

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