2777 Air Filter Element Rotary – Replacement Part The Rotary 2777 Paper Air Filter Element (Replaces Briggs & Stratton 394018) is a high-quality replacement air filtration component designed for select Briggs & Stratton small engines. This heavy-duty paper air filter is essential for protecting the engine from dust, dirt, and debris while maintaining proper airflow for efficient combustion and reliable performance. Commonly used on riding mowers, lawn tractors, and outdoor power equipment, this air filter element helps extend engine life and ensures smooth operation in demanding mowing conditions. Product Details Part Number: 2777 Brand: Rotary Part Type: Paper Air Filter Element Application: Engine Air Intake / Filtration System Condition: New Filter Dimensions Inner Diameter (Hole): 5-5/8" Outer Diameter: 7" Height: 2-1/8" Replaces Part Numbers This air filter element replaces: Briggs & Stratton 394018 Briggs & Stratton 392642 Briggs & Stratton 394018S Function The Rotary 2777 Air Filter Element is designed to: Trap dust and debris before entering the engine Maintain clean airflow for proper combustion Improve engine performance and fuel efficiency Reduce wear on internal engine components Replace clogged or worn air filter elements Compatibility This paper air filter fits select Briggs & Stratton engines commonly used in: Riding lawn mowers Lawn tractors Zero-turn mowers Outdoor power equipment with round air cleaner housings ⚠️ Always verify your engine model and confirm filter dimensions before ordering to ensure proper fitment. Installation / Usage The air filter installs inside the engine air cleaner housing. Replacement is recommended if: Filter becomes dirty or clogged Engine loses power or runs rough Performing routine seasonal maintenance Equipment operates in dusty or heavy grass conditions For best results: Inspect air filter regularly during mowing season Replace filter at recommended service intervals Ensure housing is sealed properly after installation Maintenance Tips Replace air filters more often in dusty environments Never run the engine without an installed air filter Keep air cleaner housing clean and dry Using the correct replacement filter ensures long-term engine protection 2797 Air Filter Element Rotary – Replacement Part The Rotary 2797 Air Filter Element is a high-quality replacement air filtration component designed for select Briggs & Stratton and John Deere small engines. This heavy-duty air filter helps protect the engine from dust, dirt, and debris while maintaining proper airflow for efficient combustion and reliable performance. Commonly used in riding mowers, lawn tractors, and outdoor power equipment, this replacement filter element supports long engine life and dependable operation in demanding mowing conditions. Product Details Part Number: 2797 Brand: Rotary Part Type: Air Filter Element Application: Engine Air Intake / Filtration System Condition: New Filter Dimensions Width: 4" Length: 9-5/8" Height: 2-1/2" Replaces Part Numbers Briggs & Stratton 271271 272490 272490S John Deere LG272490S LG272490 M84655 PT8999 Rotary 12945 Function The Rotary 2797 Air Filter Element is designed to: Trap dust and debris before entering the engine Maintain clean airflow for proper combustion Improve engine performance and fuel efficiency Reduce wear on internal engine components Replace dirty or clogged air filter elements Compatibility This air filter fits select Briggs & Stratton and John Deere engines commonly used in: Riding lawn mowers Lawn tractors Zero-turn mowers Outdoor power equipment requiring rectangular air filter elements ⚠️ Always verify your engine model and confirm filter dimensions before ordering to ensure proper fitment. Installation / Usage The air filter installs inside the engine air cleaner housing. Replacement is recommended if: Filter becomes dirty or clogged Engine loses power or runs rough Performing routine seasonal maintenance Equipment operates in dusty or heavy grass conditions For best results: Inspect air filter regularly during mowing season Replace filter at recommended service intervals Ensure air cleaner housing is sealed properly after installation Maintenance Tips Replace air filters more often in dusty environments Never operate equipment without an installed air filter Keep the air cleaner housing clean and dry Using the correct replacement filter ensures long-term engine protection