420924519 Reed Valve Assembly for Ski-Doo MXZ 550 2003-2008

Reed Valve Assembly for Ski-Doo

The Reed Valve Assembly is a direct replacement intake component for Ski-Doo snowmobiles, designed to control the air-fuel charge entering the engine and cross-referenced to OEM part number 420924519.

Overview

This Reed Valve Assembly is built to restore proper intake sealing and fuel delivery on Ski-Doo MXZ 550 snowmobiles from 2003 through 2008. The reed valve assembly regulates airflow into the crankcase for consistent combustion, making it a solid choice for riders replacing worn or damaged reeds. Cross-referenced to 420924519, this reed valve assembly installs in place of the original for Ski-Doo models.

Built For Performance

• Cross-referenced to OEM part number 420924519 for direct fitment
• Reed petals designed to seal tightly at low RPM for crisp throttle response
• Housing constructed to resist warping under repeated heat cycles
• Mounting pattern matches the factory intake for Ski-Doo 550 engines
• Restores lost crankcase compression caused by worn or cracked reeds

Fits These Machines

• for Ski-Doo MXZ 550, 2003
• for Ski-Doo MXZ 550, 2004
• for Ski-Doo MXZ 550, 2005
• for Ski-Doo MXZ 550, 2006
• for Ski-Doo MXZ 550, 2007
• for Ski-Doo MXZ 550, 2008

On-The-Job Use

• Trail riding where consistent throttle response matters
• Routine engine maintenance on high-hour 550 fan-cooled machines
• Rebuilding a top end after reed petal failure
• Seasonal tuning to keep intake charge stable in cold weather

Specs At A Glance

Good To Know

Q: How do I know if my reed valve needs replacing? A: Common signs include rough idle, hard starting, and a loss of low-end power on your Ski-Doo 550. Inspecting the reed petals for chips, gaps, or cracks confirms whether replacement is needed.

Q: Does this come as a complete assembly? A: This is a reed valve assembly cross-referenced to 420924519 for the listed Ski-Doo models. Confirm your machine's serial number and existing part 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.