420256606 Valve Seat Sleeve for Sea-Doo GTR STD HO 1503 2019

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component that seats the valve in the cylinder head of the Rotax 1503 engine, referenced under OEM part number 420256606.

Overview

This valve seat sleeve is a replacement cylinder head component for the Rotax 1503 engine used in personal watercraft. It presses into the head to give the valve a durable, correctly sized seat, helping restore proper sealing and compression on a rebuild. It is aimed at owners and mechanics servicing a Sea-Doo GTR STD HO 1503 who need a dependable valve seat sleeve.

Built For Performance

• Direct-fit replacement for OEM part number 420256606
• Seats the valve in the cylinder head for proper sealing
• Manufactured to match the original bore and profile
• Suits rebuild and top-end service work
• Installs with standard engine machine shop procedures

Fits These Machines

• for Sea-Doo GTR STD HO 1503, 2019

On-The-Job Use

• Cylinder head rebuilds on the Rotax 1503 engine
• Valve service and top-end repair
• Restoring sealing after valve seat wear
• Workshop and machine shop installations

Specs At A Glance

Good To Know

Q: Does this fit my engine exactly? A: It is made to OEM part number 420256606 for the Rotax 1503, so confirm your model and serial number before ordering. Q: Do I need machine work to install it? A: Yes, valve seat sleeves are pressed and finished by a machine shop, so professional installation is recommended.

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