420256606 Valve Seat Sleeve for Sea-Doo GTI SE 170 1630 2020-2026

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve, part number 420256606, is a replacement engine component that renews the valve seating surface in the cylinder head of the Sea-Doo GTI SE 170 1630.

Overview

This valve seat sleeve for Sea-Doo presses into the cylinder head to provide a durable, accurately sized seat for the valve. It supports proper valve sealing and compression in the 1630 engine of the GTI SE 170. This valve seat sleeve is made for riders and technicians servicing the top end.

Built For Performance

• Direct replacement for OEM part number 420256606
• Machined seating surface for even valve contact
• Heat-resistant construction suited to cylinder head conditions
• Press-fit design matches the original head bore
• Helps restore valve seal and compression

Fits These Machines

• for Sea-Doo GTI SE 170 1630 (2020-2026)

On-The-Job Use

• Top-end rebuilds on the 1630 engine
• Cylinder head reconditioning and valve service
• Restoring compression on a high-hour engine

Specs At A Glance

Good To Know

Q: Does this include the valve itself? A: No, this listing covers the valve seat sleeve only, so reuse or replace the valve separately. Verify your engine code and head casting before ordering.

Q: Can I install this without machining the head? A: Seat sleeves are generally installed with a press and may need head work for the correct fit and seat angle. Have a qualified machinist install it for dependable sealing.

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