420256606 Valve Seat Sleeve for Sea-Doo RXT IS 255 1503 2009

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve, part number 420256606, is a replacement engine component that presses into the cylinder head to provide a durable sealing surface for the valve seat on Sea-Doo 1503 engines.

Overview

This valve seat sleeve for Sea-Doo is a precision-machined insert that restores the valve seating area inside the cylinder head. The valve seat sleeve for Sea-Doo 1503 engines helps maintain proper valve sealing and compression. It suits riders and mechanics rebuilding or refreshing a 1503 engine who need a dependable valve seat sleeve.

Built For Performance

• Precision-machined to fit the 1503 cylinder head bore
• Provides a hard, wear-resistant valve seating surface
• Helps restore proper valve seal and compression
• Direct replacement for part number 420256606
• Constructed from durable materials for marine engine conditions

Fits These Machines

• for Sea-Doo RXT IS 255 1503 (2009)

On-The-Job Use

• Cylinder head rebuilds on 1503 Rotax marine engines
• Valve service and top-end refresh on personal watercraft
• Restoring compression on high-hour Sea-Doo engines

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement valve seat sleeve made to match the 420256606 specification, and it is not an original brand part.

Q: Do I need to machine the head after installing it? A: Valve seat sleeves are typically installed with an interference fit, so professional machining and valve seat cutting are usually required for correct fitment.

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