Check the listing for details. Cummins 5579176 DEF Pump Filter Kit | ISX Diesel Exhaust Fluid Insert. Condition: New. Listed at 69.99 USD. The Cummins 5579176 DEF Pump Filter Kit is a crucial component for maintaining the DEF system in Cummins ISX diesel engines. This filter kit includes the necessary components to replace the DEF pump filter, ensuring optimal performance and protection for the diesel exhaust fluid system. Manufactured by Cummins, this filter kit is designed to meet the specific requirements of the ISX diesel engine, providing peace of mind for commercial truck owners and fleet operators looking to keep their vehicles running smoothly.The Cummins 5579176 DEF Pump Filter Kit is a crucial component for maintaining the DEF system in Cummins ISX diesel engines. This filter kit includes the necessary components to replace the DEF pump filter, ensuring optimal performance and protection for the diesel exhaust fluid system. Manufactured by Cummins, this filter kit is designed to meet the specific requirements of the ISX diesel engine, providing peace of mind for commercial truck owners and fleet operators looking to keep their vehicles running smoothly.