420256606 Valve Seat Sleeve for Sea-Doo GTI STD Rental 1503 2019

Valve Seat Sleeve for Sea-Doo

The Valve Seat Sleeve for Sea-Doo, reference 420256606, is a precision-fit engine component that seats and protects the valve in personal watercraft cylinder heads.

Overview

This valve seat sleeve for Sea-Doo is the insert pressed into the cylinder head to give the valve a stable, wear-resistant seat. The 420256606 valve seat sleeve for Sea-Doo helps maintain proper valve sealing under high RPM marine use. It suits riders and shops maintaining a Sea-Doo GTI STD Rental 1503 from 2019.

Built For Performance

• Constructed as a durable seat sleeve for valve service in 1503 engines
• Helps restore proper valve sealing in the cylinder head
• Machined for a consistent press-fit into the head
• Built to handle sustained marine heat and RPM
• Compact replacement part that supports long-term top-end reliability

Fits These Machines

• for Sea-Doo GTI STD Rental 1503, 2019

On-The-Job Use

• Top-end rebuilds on 1503-equipped Sea-Doo watercraft
• Valve and cylinder head service
• Rental fleet maintenance, where uptime matters most

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket valve seat sleeve made for Sea-Doo and referenced by part number 420256606. Q: Does it fit other 1503 engines? A: The title lists the 2019 GTI STD Rental 1503, so confirm your model and engine 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.