Briggs & Stratton Briggs & Statton Lawn & Garden Equipment Engine Air Intake Tube 797901 Genuine OEM. This is a Genuine OEM Briggs & Stratton part. This air intake tube (part number 797901) is for lawn and garden equipment engines. Air intake tube 797901 routes air into the engine air cleaner. Wait until the engine is cool to the touch before install... - Briggs & Stratton Briggs & Statton Lawn & Garden Equipment Engine Air Intake Tube 797901 Genuine OEM.