420256606 Valve Seat Sleeve for Sea-Doo GTI P LTD 155 1503 2018

Valve Seat Sleeve for Sea-Doo

The valve seat sleeve, part number 420256606, is a replacement engine component that presses into the cylinder head to provide a durable sealing surface for the valve, helping maintain proper compression on Sea-Doo GTI P LTD 155 1503 watercraft.

Overview

This valve seat sleeve serves as the wear surface where the engine valve seals against the cylinder head. Designed for the 1503 engine platform, it helps restore proper valve sealing on Sea-Doo GTI P LTD 155 models when the original seat is worn or damaged. It is intended for riders and mechanics performing top-end engine service.

Built For Performance

• Direct replacement for OEM part number 420256606
• Constructed from hardened material to resist valve impact and heat
• Precision machined to seat correctly in the cylinder head
• Provides a renewed sealing surface for the engine valve
• Helps maintain compression and combustion efficiency

Fits These Machines

• for Sea-Doo GTI P LTD 155 1503

On-The-Job Use

• Cylinder head rebuilds and top-end engine service
• Replacing worn or damaged valve seats
• Restoring valve sealing on 1503 engine platforms
• Routine maintenance on Sea-Doo GTI P personal watercraft

Specs At A Glance

Good To Know

Q: Does this sleeve come as a single unit? A: This listing is for the valve seat sleeve as described, and quantity should be confirmed before ordering if you need more than one. Q: Can I install this without machining the cylinder head? A: Valve seat sleeves typically require precision fitting, so professional installation and head work are recommended to ensure proper sealing.

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