420256606 Valve Seat Sleeve for Sea-Doo GTS DT 1503 2014

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve fits Sea-Doo GTS DT 1503 models and cross-references OEM part number 420256606 for a precise fit in the cylinder head.

Overview

The valve seat sleeve for Sea-Doo is a machined component that presses into the cylinder head to give the valve a durable, accurately sized seating surface. It restores valve sealing on GTS DT 1503 engines when the original seat is worn or damaged. This valve seat sleeve is intended for riders and mechanics rebuilding or refreshing a 2014 Sea-Doo GTS DT 1503 top end.

Built For Performance

• Cross-references OEM part number 420256606 for direct replacement
• Machined seating surface for consistent valve seal
• Designed for the 1503 four-stroke engine platform
• Withstands combustion heat and valve impact loads
• Press-fit design matches the cylinder head bore

Fits These Machines

• for Sea-Doo GTS DT 1503, 2014

On-The-Job Use

• Cylinder head rebuilds on 1503 engines
• Top end refresh after valve wear or overheating
• Shop repair of GTS DT 1503 personal watercraft

Specs At A Glance

Good To Know

Q: Does this sleeve need machining after installation? A: Yes, valve seat sleeves are typically installed with a press and then cut or lapped to match the valve angle and seat width. Q: Can I reuse my old valves with this sleeve? A: Only if the valves and guides still measure within spec, since worn valves will not seal properly against a new seat.

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