420256606 Valve Seat Sleeve for Sea-Doo RXT STD 230 1503 2018-2019

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve for Sea-Doo is a replacement engine component that seats the valve spring and guides the valve stem on 1503 engine platforms, cross-referencing OEM part 420256606.

Overview

This valve seat sleeve for Sea-Doo is designed to press into the cylinder head of the 1503 engine and provide a durable seating surface for the valve train. It supports proper valve alignment and spring retention, helping maintain consistent compression and combustion in your personal watercraft. It is intended for riders and mechanics rebuilding or refreshing Sea-Doo RXT engines.

Built For Performance

• Constructed for the 1503 engine valve train
• Provides a stable seat for valve spring and stem alignment
• Cross-references OEM part number 420256606
• Helps restore proper valve sealing during a cylinder head rebuild
• Direct-fit style sleeve for the RXT STD 230 application

Fits These Machines

• for Sea-Doo RXT STD 230 1503, 2018
• for Sea-Doo RXT STD 230 1503, 2019

On-The-Job Use

• Cylinder head valve service on 1503 engines
• Top-end rebuilds after valve wear or damage
• Freshwater personal watercraft maintenance

Specs At A Glance

Good To Know

Q: What is a valve seat sleeve used for? A: It presses into the cylinder head to seat the valve spring and guide the valve stem, helping maintain correct valve alignment. Worn or damaged sleeves should be replaced during a top-end rebuild.

Q: Does this fit my specific RXT? A: This sleeve is referenced for the 1503 engine in the RXT STD 230. Confirm your model year and engine code 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.