Donaldson P551315 and P550550 AirDog Filter Upgrade

The water seperator has a Zomicron Rating and the Fuel Filter is 1" longer and has greater filtering capacity. First pass through will filter at 3 micron absolute. The Airdog unit is labeled as 2 micron but in reality it is a 5 micron absolute. These items ship within 1 business day.  If you have any questions, please let us know.