Description
Fleetguard FF5636 is a spin-on secondary fuel filter for Cummins ISC 8.3L and ISL 8.9L (ISC07 / ISL07 emissions-compliant), replacing Cummins 4940647 with the same 7/8-14 UNF-2B thread, 6.92 in length, and 3.68 in OD as the OE filter. The 5-micron StrataPore media delivers 98.7% efficiency per SAE J1985, sized to protect the ISC/ISL high-pressure common-rail system. Pairs with Fleetguard filter head 4990861; upgrade path is FF5813 Advanced Efficiency.
Signs You Need a New Fuel Filter
- Loss of power under load or during acceleration
- Engine hesitation, surging, or rough idle
- Hard starting or extended cranking
- Decreased fuel economy
- Check-engine light with fuel-pressure or rail-pressure fault codes
- Service interval reached (typically 15,000–25,000 mi)
Specifications
| Manufacturer | Fleetguard (Cummins Filtration) |
|---|---|
| Part Number | FF5636 |
| Part Type | Spin-On Secondary Fuel Filter |
| Media | StrataPore Synthetic |
| Micron Rating | 5 µm |
| Efficiency (SAE J1985) | 98.7% |
| Overall Height | 6.92 in (175.8 mm) |
| Largest OD | 3.68 in (93.5 mm) |
| Gasket OD | 2.83 in (71.9 mm) |
| Thread Size | 7/8-14 UNF-2B |
| Engine Compatibility | Cummins ISC 8.3L; ISL 8.9L |
| Filter Head | Fleetguard 4990861 |
| Upgrade | Fleetguard FF5813 (Advanced Efficiency) |
Cross References
This filter replaces or is equivalent to the following part numbers:
- Cummins: 4940647, 5346642
- Baldwin: BF7924
- Donaldson: P550879
- Wix: 33626
- Napa Gold: 3626
- Luber-Finer: LFF8062
- Carquest: 96626
Applications
This fuel filter fits the following engines:
- Cummins ISC 8.3L — ISC07 emissions (2007–2010) and pre-emissions
- Cummins ISL 8.9L — ISL07 emissions (2007–2010) and pre-emissions
Representative vehicles using these engines:
- Freightliner M2 106, M2 112, FL70, FL80, Business Class
- International 4300, 4400, 7300, 7400, 7500 with ISC
- Peterbilt 330, 335, 340 with ISC 8.3L
- Kenworth T300, T370 with ISC 8.3L
- Thomas Built, Blue Bird, IC school buses with ISC
- Class A and Class C motorhomes with ISC / ISL power
Use Fleetguard filter head 4990861. For higher filtration efficiency on the same housing, upgrade to Fleetguard FF5813.
