420256606 Valve Seat Sleeve for Sea-Doo Base 16-170 1630 2026

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component that restores proper valve sealing on 1630cc Sea-Doo powerplants, cross-referenced to OEM part 420256606.

Overview

The valve seat sleeve for Sea-Doo is a precision-machined insert that presses into the cylinder head to give the valve a durable, correctly sized seating surface. It renews worn or damaged seats so the valve seals properly and compression stays where it should. This valve seat sleeve for Sea-Doo suits rebuilders, mechanics, and riders servicing 1630cc engines.

Built For Performance

• Precision-machined seating surface for consistent valve seal
• Restores compression lost to worn or pitted seats
• Cross-referenced to OEM part 420256606
• Designed for 1630cc Sea-Doo engine applications
• Handles the heat and load of marine engine operation

Fits These Machines

• for Sea-Doo Base 16-170 1630, 2026

On-The-Job Use

• Cylinder head rebuilds and top-end service
• Replacing worn or damaged valve seats
• Restoring valve seal on high-hour marine engines
• Shop repairs on 1630cc Sea-Doo powerplants

Specs At A Glance

Good To Know

Q: What does a valve seat sleeve do? A: It presses into the cylinder head and gives the valve a hardened seating surface so it seals and holds compression. A: Worn seats cause poor sealing and compression loss, and this sleeve renews that surface.

Q: Does this fit my machine? A: It is listed for the Sea-Doo Base 16-170 1630, 2026 and cross-references OEM part 420256606. 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.