290931440 Rotary Valve O-Ring for Sea-Doo GTX 650 1995

Rotary Valve O-Ring for Sea-Doo

This rotary valve O-ring is a replacement sealing component that fits between the rotary valve cover and the engine cases on Sea-Doo 650 engines, and it cross-references OEM part 290931440.

Overview

This rotary valve O-ring provides the critical seal for the rotary valve cavity on Sea-Doo GTX 650 watercraft, helping to maintain proper crankcase pressure and prevent air leaks. A worn or flattened O-ring can cause hard starting, lean running, or poor performance, so replacing this rotary valve O-ring during a top-end or valve service keeps the intake sealing properly.

Built For Performance

• Direct replacement for OEM part number 290931440
• Seals the rotary valve cover to prevent air and fuel leaks
• Constructed from fuel and oil resistant rubber compound
• Designed to withstand the heat and vibration of marine two-stroke engines
• Flexible enough to seat properly in the valve cover groove
• Sold as a single O-ring for one valve cover installation

Fits These Machines

• for Sea-Doo GTX 650 (1995)

On-The-Job Use

• Rotary valve cover resealing during top-end rebuilds
• Routine intake sealing maintenance on 650 engines
• Fixing air leaks that cause lean running or hard starting
• Replacing a hardened or flattened original O-ring

Specs At A Glance

Good To Know

Q: Does this O-ring come with the rotary valve cover? A: No, this listing is for the O-ring only, and the cover is sold separately.

Q: Should I replace this O-ring every time I remove the valve cover? A: Yes, it is good practice to replace the O-ring any time the rotary valve cover is removed to ensure a proper seal.

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