Air Filter Box Housing Fits Troy Bilt 21A39M8711 Colt FT XP Tiller Overview This air filter box housing is a direct replacement designed for compatibility with the Troy Bilt 21A39M8711 Colt FT XP tiller. It restores the air intake enclosure so the filter element can function as intended. Key benefits Restores filtration function: Replaces a cracked or worn housing so the air filter can continue to trap dust and debris before they reach the engine intake. Maintains proper airflow: Designed to align with the original inlet and outlet locations to preserve correct airflow and engine breathing. Secure fit and easy installation: Built to match the original mounting points for a straightforward replacement without modifying the machine. Durable construction: Made to withstand typical field conditions and repeated maintenance cycles. Important attributes Function: Encloses and protects the air filter element, helping to keep contaminants out of the engine intake system. Compatibility: Fits Troy Bilt 21A39M8711 Colt FT XP tiller models that use this housing. Size and fit: Engineered to match original equipment dimensions and mounting interfaces to ensure a snug, reliable fit. Performance: Helps maintain the filter seal and airflow path so the filter performs as designed. Typical use scenarios a damaged housing after impact or cracking to prevent unfiltered air from entering the engine. Install during routine maintenance when the original housing shows wear, brittleness, or loose mounting points. Swap in a housing when refurbishing a tiller for seasonal preparation or prior to extended operation. Notes Confirm compatibility with the specified model number before ordering to ensure the correct fit. Installation follows original mounting methods; refer to the machine service instructions for removal and replacement steps.