420256606 Valve Seat Sleeve for Sea-Doo Cruise 18-130 1630 2023-2025

Valve Seat Sleeve for Sea-Doo

The Valve Seat Sleeve, reference 420256606, is a replacement engine component that presses into the cylinder head to give the valve a stable, wear-resistant seat on Sea-Doo Cruise 18-130 1630 watercraft.

Overview

This valve seat sleeve is a precision-fit engine part made for the Sea-Doo Cruise 18-130 1630 platform. It restores the sealing surface where the valve contacts the head, helping maintain proper compression and combustion. It is intended for riders and mechanics servicing 2023 to 2025 model years.

Built For Performance

• Precision-machined to match the 420256606 reference dimensions
• Heat-resistant construction suited to continuous engine temperatures
• Wear surface engineered for repeated valve cycling
• Direct-fit replacement for the original sleeve location
• Sold as a single sleeve for targeted cylinder head repair

Fits These Machines

• for Sea-Doo Cruise 18-130 1630, 2023-2025

On-The-Job Use

• Cylinder head rebuilds on 1630 engine platforms
• Top-end service after valve wear or compression loss
• Preventive replacement during engine teardown
• Marine workshop and DIY garage repairs

Specs At A Glance

Good To Know

Q: How do I know this valve seat sleeve fits my engine? A: The 420256606 reference matches the 1630 platform used in Cruise 18-130 models from 2023 to 2025. Confirm your engine code and serial number before ordering.

Q: Does this include the valve or other head components? A: This listing covers the valve seat sleeve only. Valves, guides, seals, and gaskets are separate parts and are not included.

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