FS19596 Fuel/Water Separator for Cummins ISB, ISM & Paccar PX8 Engines
FS19596 fuel water separator for Cummins ISB, ISM & Paccar PX8 engines. 95% water separation, 98.7% efficiency, 7 micron. Upgrade of FS1003. Direct.
Description
The FS19596 fuel water separator is a spin-on fuel/water separator with StrataPore media and an integrated standpipe, used across Cummins ISB, ISB02, ISM, ISM02, ISB 5.9, ISB 6.7 series engines and Paccar PX8 engines. It’s the upgraded replacement for the earlier Fleetguard FS1003, offering strong water separation and particulate filtration to protect fuel injection systems. IXIN Filter manufactures this filter to OEM-equivalent specifications, giving distributors and fleet operators a reliable, factory-direct alternative for scheduled fuel filter replacement.
As an IATF 16949-certified filter manufacturer, IXIN supplies the FS19596 fuel water separator to distributors and service centers in 60+ countries, with consistent batch quality and full traceability for bulk and OEM orders.
Product Specifications
| Attribute | Detail |
|---|---|
| Product Type | Spin-On Fuel/Water Separator with Standpipe |
| Overall Height | 248.31 mm (9.776 in) |
| Largest Outer Diameter | 93.83 mm (3.694 in) |
| Seam Outer Diameter | 93.17 mm (3.668 in) |
| Gasket Outer Diameter | 71.98 mm (2.834 in) |
| Gasket Inside Diameter | 62.48 mm (2.46 in) |
| Thread Size | 1-14 UNS-2B |
| Media Type | StrataPore |
| Standpipe | Yes |
| Micron Rating | 7 microns (per SAE J1985) |
| Filtration Efficiency (TWA) | 98.7% (per SAE J1985) |
| Free Water Separation | 95% |
| Emulsified Water Separation | 95% |
| Capacity | 52 g |
| Flow Rate | 89.83 gph |
| Certification | IATF 16949 |
Compatible Engines
- Cummins ISB, ISB02
- Cummins ISM, ISM02
- Cummins ISB 5.9, ISB 6.7
- Paccar PX8
Note: Confirm your specific engine model and production year against the OE part number before ordering.
FS19596 Cross Reference / OE Replacement Numbers
The FS19596 fuel water separator is a direct cross reference and replacement for the following OE and aftermarket part numbers:
| Brand / Source | Part Number |
|---|---|
| Fleetguard/Cummins Filtration | FS19596 |
| Fleetguard (superseded) | FS1003 / LFF1003 |
| Cummins OE | 3954891 |
| Baldwin | BF1293-SPS |
| Additional cross reference numbers | 33604 / 34068 / 86604 / 2056637 / 22637904 / 3604XE / 4070801 / 8660100 |
Note: FS19596 is documented as the upgraded replacement for the earlier Fleetguard FS1003. Confirm with your parts manual which version your engine requires.
Why Choose IXIN’s FS19596 Fuel/Water Separator
- Strong Water Separation Performance — Rated at 95% free water and 95% emulsified water separation, protecting high-pressure fuel injection components from moisture contamination.
- High Particulate Filtration Efficiency — Rated at 98.7% efficiency (TWA) at 7 microns per SAE J1985, using StrataPore media for consistent performance.
- Integrated Standpipe Design — Includes a standpipe for reliable fuel flow management within the filter housing.
- OEM-Equivalent Fit — Manufactured to match the OE 1-14 UNS-2B thread specification and dimensions for the FS19596, ensuring drop-in compatibility for Cummins ISB/ISM and Paccar PX8 applications.
- Factory-Direct Supply — As a manufacturer (not a trading company), IXIN offers stable lead times and customization options for private label, packaging and media specification. For guidance on verifying cross reference numbers before a bulk order, see our fuel filter cross reference guide.
Installation & Maintenance Notes
For Cummins ISB/ISM and Paccar PX8 engines using the FS19596 fuel/water separator, general service steps include:
- Drain any accumulated water from the separator before removing the old filter.
- Relieve fuel system pressure before removing the filter element.
- Lightly oil the new gasket with clean diesel fuel before installation to ensure a proper seal.
- Hand-tighten per manufacturer torque specification for the 1-14 UNS-2B thread — avoid over-tightening, which can damage the gasket seal.
- Prime the fuel system per OEM procedure before restarting the engine.
- Follow your specific engine’s recommended service interval.
FAQ
Q: Is the FS19596 the same as the older FS1003? A: The FS19596 is the upgraded replacement for the earlier Fleetguard FS1003. Confirm with your parts manual or dealer which version your specific engine requires.
Q: How much water can this filter separate from fuel? A: The FS19596 is rated at 95% free water separation and 95% emulsified water separation, in addition to 98.7% particulate filtration efficiency at 7 microns.
Q: What’s the difference between IXIN’s FS19596 and the OEM Fleetguard filter? A: IXIN manufactures this filter to match OEM dimensions and the documented filtration/water-separation performance ratings. The main difference is price and lead time — IXIN offers factory-direct pricing for bulk and OEM orders without compromising fit or performance.
Q: Can I order the FS19596 with custom packaging or private label? A: Yes. IXIN supports customized packaging, labeling and media specifications for distributors and private-label buyers. Contact our sales team with your requirements.
Q: What is the minimum order quantity (MOQ)? A: MOQ varies by customization level. Get in touch with us via WhatsApp or email for current MOQ and lead time on the FS19596 fuel water separator.
