FK-4021-1A Primary Air Filter
The FK-4021-1A is a primary engine air filter for heavy-duty and construction equipment. It is designed as a replacement option for Donaldson P181034 and Fleetguard AF418. Please confirm the OE number and filter dimensions before ordering.
Selected OE Reference Numbers
| Hitachi | 4090408, 4100806, 0660360, 0684733 |
| SANY | B222100000533 |
| Allis Chalmers | 70660360 |
| Fiat | 70660360, 73050258 |
| Caterpillar | 3I-0174, 3I-0787, 8T-5600, 9Y-7808, 081-3923, 094-6353 |
| Cummins | 204631, 299418, 3230272, 650152, 706425 |
| JCB | 32/201602 |
| Kobelco | 2446U128S2, 2446U144S3, 2451U124-3A |
| Ford | 5004772, 6089378, 81DB9601BA, A780X9601AFA |
| Volvo | 6645119, 70684733, 991245700 |
Product Specifications
| Filter Type | Primary Engine Air Filter |
| Design | Round / Axial Seal |
| Outside Diameter | Approx. 232 mm |
| Inside Diameter | Approx. 123 mm |
| Overall Height | Approx. 340 mm |
Application Reference
This filter is used across a wide range of construction equipment, excavators, loaders, trucks and industrial equipment. Application should be confirmed by OE number, cross-reference number and filter dimensions rather than equipment model alone.
Manufacturer-supplied references: Lishide 200/210, Sunward 230/330 and XCMG 370. Please confirm the original filter number before replacement.
Related Secondary / Safety Air Filter
For air cleaner systems using a secondary safety element, commonly associated reference numbers include Donaldson P119374, Fleetguard AF490M, MANN-FILTER C 1281 and WIX 42924.
Important: Cross-reference information is provided for identification purposes. Always verify OE number, dimensions and application before installation.
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