420256606 Valve Seat Sleeve for Sea-Doo Challenger SP 155 1503 2009

Valve Seat Sleeve for Sea-Doo

This valve seat sleeve is a replacement engine component designed to restore proper valve seating in Sea-Doo 1503 engines, cross-referencing OEM part 420256606.

Overview

This valve seat sleeve is a precision replacement component made for Sea-Doo 1503 engines, cross-referencing OEM part 420256606. It presses into the cylinder head to give the valve a durable seating surface, helping maintain proper compression and combustion. A solid choice for riders and mechanics rebuilding or servicing a Sea-Doo Challenger SP 155 powerplant.

Built For Performance

• Cross-references OEM part 420256606 for straightforward replacement
• Machined to fit 1503 engine cylinder heads
• Provides a durable seating surface for the valve
• Helps restore proper compression and combustion sealing
• Built for marine engine service and rebuild work

Fits These Machines

• for Sea-Doo Challenger SP 155
• for Sea-Doo 1503 engine applications

On-The-Job Use

• Top-end engine rebuilds
• Cylinder head servicing
• Valve and compression repairs

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: This is a replacement valve seat sleeve that cross-references OEM part 420256606, not an original factory brand item.

Q: How many sleeves should I order? A: Count the valve seats you are servicing in your 1503 cylinder head and order accordingly, as each sleeve covers one seat.

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