420256606 Valve Seat Sleeve for Sea-Doo Fish Pro 155 1503 2019

Valve Seat Sleeve for Sea-Doo Fish Pro 155 1503

This valve seat sleeve is a replacement engine component built to restore valve seating and guide alignment in the 1503cc Rotax engine found in the 2019 Sea-Doo Fish Pro 155, referencing part number 420256606.

Overview

This valve seat sleeve for Sea-Doo is a precision-formed engine component that seats and guides the valve inside the cylinder head of the 2019 Fish Pro 155 1503. The valve seat sleeve for Sea-Doo supports proper compression sealing and valve alignment for owners or technicians performing top-end service on a 1503cc Rotax powerplant.

Built For Performance

• Machined to match OEM dimensions for the 1503cc Rotax cylinder head
• Delivers a stable seating surface for consistent valve closure
• Helps correct valve guide alignment during rebuild work
• Made from heat-resistant material for marine engine conditions
• Direct replacement for part number 420256606

Fits These Machines

• for Sea-Doo Fish Pro 155 1503 (2019)

On-The-Job Use

• Top-end engine rebuilds and cylinder head repair
• Compression restoration after valve seat wear
• Routine maintenance on personal watercraft
• Shop service and owner-led engine refresh projects

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is an aftermarket valve seat sleeve that references part number 420256606 and is not an original brand product.

Q: Can I install this myself? A: Valve seat sleeve installation typically requires cylinder head machining and pressing equipment, so professional shop service is recommended unless you have the proper tooling.

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