The Donaldson 4.20" Transmission Filter Kit is the perfect choice for keeping your vehicle's transmission running smoothly. This kit includes two filters and gaskets, providing superior protection against dirt, dust and other contaminants. The microglass media provides fine filtering, ensuring that your transmission is always running at peak performance. This kit is a direct replacement for your vehicle, guaranteeing the same form, fit and functionality as the original part. FleetPride is your First Click in Heavy Duty®.