420924519 Reed Valve Assembly for Ski-Doo Expedition 550 Sport 2005-2017

Reed Valve Assembly for Ski-Doo Expedition 550 Sport

This reed valve assembly is a replacement intake component for the Ski-Doo Expedition 550 Sport, cross-referencing OEM part number 420924519 for straightforward identification.

Overview

This reed valve assembly manages intake airflow on the Ski-Doo Expedition 550 Sport, with reed petals that flex to control the charge entering the crankcase. It is intended for owners and technicians servicing 2005 to 2017 models who need a dependable replacement for a worn reed valve assembly. Fitting a new reed valve assembly supports smooth throttle response and consistent intake sealing.

Built For Performance

• Reed petals designed to seal tightly and open cleanly with each intake pulse
• Mounts at the intake port for consistent charge delivery
• Built to tolerate the repeated heat cycles of a two-stroke engine
• Direct replacement for OEM part number 420924519
• Supplied as a single reed valve assembly

Fits These Machines

• for Ski-Doo Expedition 550 Sport, 2005-2017

On-The-Job Use

• Intake or top-end service on the Expedition 550 Sport
• Restoring intake sealing after reed petal wear
• Shop or trailside repairs on 2005 to 2017 model snowmobiles
• Rebuild projects needing a matched replacement intake component

Specs At A Glance

Good To Know

Q: Does this reed valve assembly replace OEM part 420924519? A: Yes, it is cross-referenced to 420924519 for the Expedition 550 Sport. Check the part number on your machine before ordering.

Q: What are signs a reed valve assembly needs replacing? A: Look for cracked or chipped petals, hard starting, or rough idle. A failing reed valve assembly can also reduce power and fuel efficiency.

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