Compatibility and fit This air filter cover is designed to fit 066, 065, MS660, and MS650 chainsaw models. It is a reliable replacement part with a precise fit and is compatible with replacement part numbers 1122 140 1002 and 1122 080. Durable construction Made from tough plastic, this cover provides reliable protection for the air filter and helps extend the chainsaw's life during demanding use. Efficient filtration and engine protection The air filter cover assists in keeping dust and debris from entering the engine, supporting performance and prolonging engine life by maintaining a clean intake path. Easy installation Attaches securely and quickly to your chainsaw, delivering a snug fit. It allows for fast replacement of a worn or damaged cover without hassle. Practical use scenarios Routine maintenance during service on MS660 or MS650 to a worn cover. Use in dusty environments such as wood cutting, landscaping, or construction to protect engine performance. Keep as a spare replacement part for quick onsite swaps when the current cover is damaged.