Description
Fleetguard FF5321 is a spin-on secondary fuel filter with a 5-micron rating and 7/8-14 UNF mounting thread, used on Caterpillar industrial engines and Atlas Copco / Ingersoll-Rand mobile compressors. Replaces Caterpillar 6I-4783 and crosses to Atlas Copco 3222310756 and Ingersoll-Rand 57514515.
Specifications
| Manufacturer | Fleetguard |
|---|---|
| Part Number | FF5321 |
| Part Type | Spin-On Secondary Fuel Filter |
| Thread Size | 7/8-14 UNF-2B |
| Length | 6.92 in |
| Largest OD | 3.68 in |
| Gasket OD | 2.83 in |
| Gasket ID | 2.46 in |
| Micron Rating (SAE J1985) | 5 µm |
| Efficiency, TWA (SAE J1985) | 98.7% |
Cross References
This fuel filter replaces or is equivalent to the following part numbers:
- Caterpillar: 6I-4783
- Atlas Copco: 3222310756
- Ingersoll-Rand: 57514515
- Tec-Fil: PSC745
- Also known as: Mijack 23150003, Sennebogen 43277
Applications
This filter fits Caterpillar industrial engines and mobile-compressor / material-handling equipment using a 7/8-14 UNF spin-on mount with 5-micron secondary fuel filtration.
Verify the existing filter’s micron rating, thread, and gasket dimensions before ordering — many 7/8-14 spin-on fuel filters share the same external profile but differ in efficiency rating.
