O.S. Engine OS44501110 Cam Cover O-ring for FS-200S FS-200S-FI  [OS44501110]

Cam cover O-ring for FS-200S engines

This O.S. Engine cam cover gasket is an RC-scale replacement O-ring made to seal the cam cover on FS-200S family nitro engines. It helps stop fuel or crankcase leaks that can upset running and idle stability.

Compatibility is limited to the exact model codes shown: FS-200S and FS-200S-FI. Do not assume fit with other engines; always check part numbers or service manuals against these codes.

Installation notes: clean the cam cover groove and mating faces before fitting the O-ring, avoid excessive stretching when seating the ring, and ensure the cover sits flush before tightening screws. A small amount of O-ring-safe lubricant can ease installation, and replace the seal if it shows nicks or permanent deformation.

Maintenance role: a correctly seated cam cover O-ring maintains crankcase integrity and prevents fuel leakage that can change needle settings or create inconsistent running, so renew suspect seals during rebuilds or regular servicing.