Fleetguard FS1242 Fuel/Water Separator – Spin-On
4 in stock
The Fleetguard FS1242 Fuel/Water Separator is a spin-on filtration element designed to remove water and particulate contamination from diesel fuel before it reaches critical engine and fuel-system components. Its efficient separation performance helps deliver cleaner fuel while protecting fuel system components from contamination and water-related damage.
The FS1242 features a 1-14 UNS-2B thread, compact spin-on design, and 90% emulsified water separation. Fleetguard specifies primary particle efficiency of 96% at 17.3 microns, making the FS1242 a dependable choice for demanding heavy-duty applications.
| Specification | Details |
|---|---|
| Brand | Fleetguard |
| Part Number | FS1242 |
| Product Type | Fuel/Water Separator |
| Filter Style | Spin-On |
| Thread Size | 1-14 UNS-2B |
| Overall Height | 6.89 in. / 174.90 mm |
| Largest Outside Diameter | 3.66 in. / 93.04 mm |
| Gasket Outside Diameter | 2.83 in. / 71.98 mm |
| Gasket Inside Diameter | 2.46 in. / 62.53 mm |
| Emulsified Water Separation | 90% |
| Primary Particle Efficiency | 96% @ 17.3 micron (c) |
| Standpipe | No |
| Capacity Test Specification | SAE J905 |
Specifications are from Fleetguard's product information.
The Fleetguard FS1242 is used across a variety of heavy-duty diesel applications. Listed cross-reference numbers include Baldwin BF1212, Caterpillar 9Y4431, Cummins 1492278, 3308638, 3310216, 3355903 and 3831132, Donaldson P551864/P553201/P555001/P558000, WIX 55110, and Fram PS6829, among others. Always verify the application and dimensions before ordering.
Important: The FS1242 is the filter element. For the filter/bowl assembly version, Fleetguard specifies FS1242B. Fleetguard also lists FS1015/FS1015B as upgraded applications for the FS1242.
