
Moose Offroad Hard - Cylinder Head Cover Gasket (manufacturer part number: 817854MSE) — a sealing gasket designed for engine servicing on off-road motorcycles, enduro, motocross, and quads. This moulded rubber gasket replaces the worn cylinder head cover gasket and allows for restoring the seal during maintenance operations without needing to purchase a complete kit. Sold individually, it is aimed at riders and mechanics who want a simple replacement part that fits original dimensions.
This gasket integrates during the reinstallation of the cylinder head cover to ensure sealing around the cylinder head and limit oil leaks. It is compatible with many off-road machines — including several YAMAHA 450 models (YFZ 450 R 2022, WR 450 F DJ03 2015, WR 450 F CJ 2011) — and is suitable for enduro, motocross, and quad uses. Convenient for quick interventions in the workshop or on the field, Moose offers the necessary part here without unnecessary extra costs.
Check the reference and the condition of the gasket surface before installation; always replace in case of deformation or wear to maintain engine sealing.