420924519 Reed Valve Assembly for Ski-Doo MXZ 550 Sport 2011-2014

Reed Valve Assembly for Ski-Doo

This reed valve assembly for Ski-Doo manages intake charge flow into the crankcase and carries OEM cross-reference 420924519 for straightforward matching.

Overview

This reed valve assembly for Ski-Doo is a replacement intake component built for 550-series snowmobile engines, controlling how the air and fuel mixture enters the crankcase. It swaps in for the stock reed cage so the engine keeps steady intake timing across the rev range. Owners of a Ski-Doo MXZ 550 Sport needing a fresh reed valve assembly for Ski-Doo will find it a dependable fit for routine servicing.

Built For Performance

• Made to match the OEM 420924519 mounting configuration
• Reed petals seat cleanly for reliable one-way intake sealing
• Built to withstand two-stroke heat cycles and vibration
• Compact assembly that fits the factory intake location
• Works with original intake boots and manifolds on listed models

Fits These Machines

• for Ski-Doo MXZ 550 Sport 2011
• for Ski-Doo MXZ 550 Sport 2012
• for Ski-Doo MXZ 550 Sport 2013
• for Ski-Doo MXZ 550 Sport 2014

On-The-Job Use

• Trail and backcountry riding
• Routine top-end service and rebuilds
• Fixing rough idle and weak throttle response on worn engines
• Replacing damaged reed petals after debris or lean conditions

Specs At A Glance

Good To Know

Q: What symptoms suggest a failing reed valve? A: Difficult starting, an unstable idle, and reduced low-end torque are common signs of worn or chipped petals. A visual inspection of the assembly usually confirms the problem.

Q: Are new gaskets required when installing this assembly? A: Confirm the listing contents, since gaskets are not always included. Fresh gaskets help prevent intake leaks that can affect engine performance.

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