420431801 Valve Cover Gasket for Can-Am Defender Max HD11 1000 2026

Valve Cover Gasket for Can-Am

This valve cover gasket for Can-Am Defender models seals the valve cover to the cylinder head, preventing oil leaks and keeping the top end of your engine properly lubricated. It matches OEM 420431801.

Overview

The valve cover gasket for Can-Am Defender is a direct-fit sealing component for the 1000cc HD11 engine's valve cover. This valve cover gasket keeps oil contained inside the cylinder head while blocking dirt and moisture from entering. It is the right replacement for riders servicing a leaking or worn seal on their machine.

Built For Performance

• Precision-cut to match OEM 420431801 dimensions
• Oil-resistant material resists breakdown from heat and engine oil
• Seals the valve cover to the cylinder head to stop oil seepage
• Withstands the heat cycling of a working HD11 engine
• Direct replacement with no modification required

Fits These Machines

• for Can-Am Defender Max HD11 1000, 2026

On-The-Job Use

• Routine top-end maintenance and valve cover resealing
• Fixing oil weepage around the valve cover on trail and farm machines
• Servicing the HD11 engine after removing the valve cover
• Preventive replacement during other engine repair work

Specs At A Glance

Good To Know

Q: Does this gasket fit my 2026 Can-Am Defender Max HD11 1000? A: Yes, this valve cover gasket matches OEM 420431801 and is intended for that model and year. Always confirm your machine's serial number before ordering.

Q: Do I need sealant with this gasket? A: Follow your service manual's guidance, as some applications call for a small amount of sealant at specific points. Inspect the mating surfaces and clean them before installation.

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