420256606 Valve Seat Sleeve for Sea-Doo GTI LTD 155 1503 2011-2018

Valve Seat Sleeve for Sea-Doo

The valve seat sleeve for Sea-Doo 1503 engines is a precision-machined component that presses into the cylinder head to provide a durable sealing surface for the valve face, cross-referenced to OEM part 420256606.

Overview

This valve seat sleeve for Sea-Doo is designed to restore proper valve sealing in 1503 engine cylinder heads. The valve seat sleeve for Sea-Doo GTI LTD 155 models gives the valve a hardened seat that resists wear and maintains compression. It suits riders and mechanics rebuilding or refreshing a 1503 top end.

Built For Performance

• Machined to match OEM part 420256606 dimensions
• Hardened seating surface resists valve face wear
• Press-fit design seats securely in the cylinder head
• Maintains proper valve seal and compression
• Compatible with 1503 four-stroke engine heads

Fits These Machines

• for Sea-Doo GTI LTD 155 1503 (2011-2018)
• for Sea-Doo GTI LTD 1503 (2014)

On-The-Job Use

• Cylinder head rebuilds on 1503 engines
• Valve job service and seat replacement
• Restoring compression on high-hour engines
• Powersports machine shop engine work
• Preventive top-end maintenance

Specs At A Glance

Good To Know

Q: Does this fit my 1503 engine? A: This valve seat sleeve is built for Sea-Doo 1503 cylinder heads, including GTI LTD 155 and GTI LTD models listed. Confirm your engine code and serial number before ordering.

Q: Is installation difficult? A: Seat sleeves are typically pressed in with a hydraulic press and require head machining for proper fit. Professional installation is recommended for best results.

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