420256606 Valve Seat Sleeve for Sea-Doo Wake STD NA 1503 2019

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component that restores a proper sealing surface for the valve in the cylinder head, referencing OEM part number 420256606.

Overview

This valve seat sleeve is a precision engine component designed to seat the valve correctly inside the cylinder head of your watercraft. The valve seat sleeve for Sea-Doo applications helps maintain compression and valve sealing so the engine runs as intended. It is intended for riders and mechanics who need a dependable replacement part for rebuild or repair work.

Built For Performance

• Precision machined to provide a stable valve seating surface
• Constructed from durable material suited to high-temperature engine use
• Direct replacement for OEM part number 420256606
• Helps restore proper valve sealing and compression
• Designed for cylinder head installation on compatible Sea-Doo engines

Fits These Machines

• for Sea-Doo Wake STD NA 1503, 2019
• for Sea-Doo Wake STD 170 1630, 2020-2026

On-The-Job Use

• Cylinder head rebuilds and top-end engine service
• Valve sealing repair on personal watercraft
• Routine engine maintenance for Sea-Doo owners
• Shop and DIY repair work on compatible models

Specs At A Glance

Good To Know

Q: How do I know if this valve seat sleeve fits my machine? A: Compare your engine family and serial number against the model fitment listed above, and confirm your existing part number matches 420256606. Fitment can vary by year and serial, so verifying before ordering is recommended.

Q: Can I install this valve seat sleeve myself? A: Installation typically requires cylinder head removal and specialized machining or pressing equipment. If you do not have those tools, a qualified marine engine technician is the safer choice.

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