420256606 Valve Seat Sleeve for Sea-Doo GTI DTF 1503 2016

Valve Seat Sleeve for Sea-Doo GTI DTF 1503

This valve seat sleeve for Sea-Doo GTI DTF 1503 engines (OEM cross-reference 420256606) is a machined insert that presses into the cylinder head to give the valve a hardened, accurate seat surface.

Overview

This valve seat sleeve is a replacement insert for the 1503 engine cylinder head used in the Sea-Doo GTI DTF 1503. It restores the valve seating surface so the valve seals correctly inside the combustion chamber. It suits riders and mechanics rebuilding or refreshing a 1503 top end.

Built For Performance

• Machined to restore the valve seat surface in the 1503 cylinder head
• Cross-references OEM part number 420256606
• Hardened seating face for reliable valve sealing
• Press-fit design matched to the 1503 head casting
• Sold as a single replacement sleeve

Fits These Machines

• for Sea-Doo GTI DTF 1503, 2016

On-The-Job Use

• Cylinder head rebuilds on 1503 engines
• Valve jobs where the original seat is worn or damaged
• Top-end refreshes on the GTI DTF 1503
• Shop repairs requiring an OEM-matched seat insert

Specs At A Glance

Good To Know

Q: Does this sleeve need machining after install? A: Yes, a valve seat sleeve is pressed in and then cut to the correct seat angle and depth, so head work by a machine shop is normally required.

Q: Is 420256606 the only number I should match? A: Match the sleeve to the 1503 cylinder head in your machine and confirm your serial number and parts diagram 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.