420256606 Valve Seat Sleeve for Sea-Doo Cruise 21-300 1630 2026

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, and it is listed under OEM cross-reference 420256606.

Overview

This valve seat sleeve for Sea-Doo is a precision engine component that presses into the cylinder head to give the valve a durable seat to seal against. The valve seat sleeve for Sea-Doo helps maintain compression and combustion sealing as the engine cycles. It suits riders and mechanics rebuilding or servicing the 1630 engine platform.

Built For Performance

• Direct replacement for OEM part number 420256606
• Provides a durable sealing surface for valve operation
• Machined to fit the 1630 engine cylinder head
• Helps maintain proper compression and combustion sealing
• Suited to rebuild and top-end service work

Fits These Machines

• for Sea-Doo Cruise 21-300 1630, 2026

On-The-Job Use

• Cylinder head rebuilds and top-end service
• Restoring valve sealing on high-hour engines
• Shop and DIY engine repair projects
• Routine maintenance for 1630 powered watercraft

Specs At A Glance

Good To Know

Q: Does this fit my watercraft? A: Fitment depends on the model and serial number, so confirm your engine platform and part number before ordering.

Q: Is this an original manufacturer part? A: This is a replacement valve seat sleeve that cross-references OEM number 420256606 and is not an original brand product.

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