420256606 Valve Seat Sleeve for Sea-Doo SP 2 x 215 1503 2012

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement valvetrain component for Sea-Doo 1503 four-stroke engines, cross-referencing OEM part number 420256606, and it restores a precise sealing surface for the valves inside the cylinder head.

Overview

This valve seat sleeve for Sea-Doo is a press-in insert that gives the intake and exhaust valves a hardened, accurately machined seat to seal against. It is intended for rebuilders and owners servicing Sea-Doo 1503 engines who need to refresh worn or pitted valve seats. Each valve seat sleeve for Sea-Doo is made to match the 420256606 reference so the head can be rebuilt to spec.

Built For Performance

• Machined seating face for proper valve-to-seat contact
• Hardened material to resist the heat and pounding of combustion cycles
• Press-fit design that installs into the cylinder head seat bore
• Direct interchange reference 420256606 for straightforward sourcing
• Suited to four-stroke 1503 engine valvetrain rebuilds

Fits These Machines

• for Sea-Doo SP 2 x 260 1503, 2012
• for Sea-Doo SP 2 x 215 1503, 2012

On-The-Job Use

• Cylinder head rebuilds on 1503 four-stroke marine engines
• Valve job service when seats are worn, pitted, or out of spec
• Top-end refresh during routine engine maintenance
• Shop-level repair work on personal watercraft valvetrains

Specs At A Glance

Good To Know

Q: Do I need to machine the head when installing this sleeve? A: Valve seat sleeves are typically installed with a press and then cut or lapped so the seat face meets the valve correctly. Confirm the required seat bore and installed height with a qualified machinist before assembly.

Q: How many sleeves should I order per engine? A: Order the quantity that matches the number of worn or damaged seats found during teardown. Inspect every seat in the head so you replace all that fall outside the service limit in one pass.

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