Description
Fleetguard FF5320 is a secondary spin-on fuel filter and a direct replacement for the popular Caterpillar 1R-0750. It is used on Caterpillar 3406E, C15, C13, C12, and C9 engines as the final stage of fuel filtration before the injectors. Cummins Filtration’s high-efficiency cellulose media protects the high-pressure fuel system from particulate contamination.
Signs You Need a New Fuel Filter
- Loss of power under load or on grades
- Hard starting or extended cranking
- Engine surging or rough idle
- Decreased fuel economy
- Fuel system fault codes or restriction warnings
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FF5320 |
| Part Type | Secondary Spin-On Fuel Filter |
| Thread Size | 1-14 UNS-2B |
| Overall Height | 6.94 in (176.28 mm) |
| Outer Diameter | 3.68 in (93.47 mm) |
| Gasket OD | 2.83 in (71.88 mm) |
| Gasket ID | 2.46 in (62.48 mm) |
| Engine Compatibility | Caterpillar 3406E, C15, C13, C12, C9, C7 |
Cross References
This part replaces or is equivalent to the following part numbers:
- Caterpillar: 1R-0750
- Donaldson: P551313
- Baldwin: BF7633
- WIX: 33528
- NAPA: 3528
- Fram: P8334
- Purolator: F65213
- Luber-Finer: LFF3347
- Carquest: 86528
- Hastings: FF1079
Applications
This fuel filter fits the following engines:
- Caterpillar 3406E 14.6L (1993–1999)
- Caterpillar C15 / C15 ACERT 14.6L (1999–2010)
- Caterpillar C13 / C13 ACERT 12.5L (2002–2010)
- Caterpillar C12 11.9L (1999–2003)
- Caterpillar C9 8.8L (2002–2010)
- Caterpillar C7 7.2L (2003–2010)
Representative vehicles using these engines:
- Kenworth T800, W900, C500 with CAT power
- Peterbilt 379, 386, 387, 388, 389 with CAT power
- Freightliner Classic, Coronado, Columbia with CAT power
- Western Star 4900, 6900 with CAT power
- Caterpillar wheel loaders, scrapers, off-highway trucks, generator sets
Verify your engine serial number before ordering. CAT also offers 1R-0749 and 1R-0751 for primary and high-efficiency stages — confirm which filter location you are servicing.
