Applications Serial # Prefix 259D (FTL) 279D (GTL) 289D (TAW) 299D (GTC, HCL) 299D XHP (JST, NLC) 299D2 (FD2) 299D2 XHP (DX2) (1) Engine Oil Replaces 377-6969 (1) Air Primary Element Replaces 110-6326 (1) Air Secondary Element Replaces 110-6331 (1) Fuel In-line Element Replaces 416-5884 (1) Fuel Primary Element Replaces 363-5819 (1) Breather Element Replaces 258-2829 (1) Fresh Air Element Replaces 265-6619 (1) Recirculating Element Replaces 265-6618 (1) Hydraulic Oil Replaces 421-5479 Upon Purchase Filters may vary Between Donaldson, Fleetguard, Baldwin, Sure Filter, HIFI and WIX. If you desire a specific brand, please inform us prior to placing your order With CFKIT, you will receive High-Quality Filters from the most known brands Can't find your kit? Contact us and we'll create one for you (1) Engine Oil Replaces 377-6969 (1) Air Primary Element Replaces 110-6326 (1) Air Secondary Element Replaces 110-6331 (1) Fuel In-line Element Replaces 416-5884 (1) Fuel Primary Element Replaces 363-5819 (1) Breather Element Replaces 258-2829 (1) Fresh Air Element Replaces 265-6619 (1) Recirculating Element Replaces 265-6618 (1) Hydraulic Oilr Replaces 421-5479