420855131 Intake Valve for Sea-Doo GTI STD HO 900 2017-2019

Intake Valve for Sea-Doo

This intake valve for Sea-Doo watercraft controls the flow of air and fuel into the engine cylinder, and it carries the OEM cross-reference 420855131.

Overview

This intake valve for Sea-Doo is a replacement engine component built to keep combustion timing and airflow working as intended. The intake valve for Sea-Doo sits in the cylinder head and opens at the right moment to let the air and fuel charge enter, then seals tight on the compression stroke. It suits riders and mechanics servicing personal watercraft engines.

Built For Performance

• Direct cross-reference to OEM part number 420855131
• Precision-ground stem for a consistent fit in the valve guide
• Heat-resistant head material suited to sustained engine temperatures
• Machined seat face for reliable sealing against the valve seat
• Balanced construction to support stable valve timing at high RPM

Fits These Machines

• for Sea-Doo GTI STD HO 900, 2017-2019

On-The-Job Use

• Top-end rebuilds on 900 series personal watercraft engines
• Cylinder head service and valve replacement work
• Restoring compression after a burnt or worn valve
• Routine maintenance on high-hour rental and recreation craft

Specs At A Glance

Good To Know

Q: Should intake valves be replaced in a full set? A: Replacing all valves in the head at once is common practice since they wear at similar rates under the same running conditions. Always check valve guide clearance and seat condition before assembly.

Q: Does this valve require any machining before installation? A: Valve seats should be cut or lapped and lash set to factory specification after installation. Confirm the exact engine variant before ordering, since head setups can differ between trim levels.

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