420256606 Valve Seat Sleeve for Sea-Doo RXT 1503 2005-2006

Valve Seat Sleeve for Sea-Doo RXT 1503

This valve seat sleeve, reference 420256606, is a replacement sleeve pressed into the cylinder head to hold the valve seat securely on 1503 engine platforms.

Overview

This valve seat sleeve for Sea-Doo RXT 1503 models is a machined sleeve that presses into the cylinder head to secure the valve seat and support proper valve sealing. It is intended for riders and shops rebuilding or servicing 1503 engine top ends. The valve seat sleeve fits 2005 to 2006 RXT 1503 machines and cross-references 420256606.

Built For Performance

• Cross-reference 420256606 for straightforward parts lookup
• Machined to seat securely in the cylinder head bore
• Supports correct valve seat retention under heat and load
• Suits 1503 engine top-end rebuild work
• Fits 2005 to 2006 RXT 1503 model years

Fits These Machines

• for Sea-Doo RXT 1503, 2005
• for Sea-Doo RXT 1503, 2006

On-The-Job Use

• Cylinder head rebuilding and valve seat replacement
• Top-end refresh on high-hour 1503 engines
• Shop service work on RXT 1503 watercraft
• Restoring proper valve sealing after head work

Specs At A Glance

Good To Know

Q: Is this an original Sea-Doo part? A: No, this is a replacement valve seat sleeve identified by cross-reference 420256606. Phrase branding as for Sea-Doo since it is not an original factory item.

Q: How many sleeves should I order? A: Order the quantity matching the valve positions you are servicing during the head rebuild. Confirm the count against your engine build before ordering.

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