Package includes: 2 pieces lawn mower air filters, 1 piece air filter cover, 1 piece carburetor intake pump, 1 piece 4106 spark plug. Air filter: Can filter out impurities and pollutants to keep the air intake clean and prevent the engine from sucking in air containing contaminant particles. 595660 Air filter cover: This lawn mower cleaner cover. Lawn Mower Intake Pump: The carburetor intake pump is made of high-quality rubber and plastic, with good oil resistance, aging resistance, and is not easily cracked. Widely Used: Compatible with MTD Troy Bilt Series 590581 08P502 08P602 09P602 09P702 engines, durable, stable, and washable.