CFKIT 500 Hours Filter Kit Compatible with CAT 257D (Serial # Prefix EZW) all 6 IN Gross Width 7 CASESET83 6 IN Gross Width 7 IN Gross Height 5 IN Gross Weight 1 9 Percent Efficiency Test Std ISO 5011 Primary Application AHLMANN 4108914A Type Primary Style Radialseal Brand RadialSeal™ Media Type Cellulose Flow Direction Outside In Use_With: RS3943 Fits: Ahlmann Applications CAT 257D (Serial # Prefix EZW) Filters included Qty Filter P N Maker Manufacturer P N 1 Eng Oil 57730 Wix 377 6969 1 Air Primary Element 46562 Wix 110 6326 1 Air Secondary Element 46569 Wix 110 6331 1 Fuel In line Element 4165884 CTP 416 5884 1 Fuel Primary Element PF46049 Baldwin 363 5819 1 Breather Element 2582829 CAT 258 2829 Upon Purchase Filters may vary Between Donaldson you will receive High Quality Filters from the most known brands Can't find your kit