Description
Genuine Caterpillar 175-2949 (1752949) advanced-efficiency primary fuel/water separator — the universal spin-on Cat fuel filter used across C7, C9, C10, C12, C13, C15, C16, C18, 3406E, 3306, and 3176 engines. Removes 100% of free water and 90% of emulsified water along with fine particulates that erode high-pressure injectors.
Signs You Need a New Fuel Water Separator
- Water-in-fuel warning lamp illuminated
- Hard starting, rough idle, or surging under load
- Visible water or milky residue when draining the separator bowl
- Reduced fuel economy or premature injector failure
- Service interval exceeded (typically 250–500 hours)
Specifications
| Manufacturer | Caterpillar (Genuine OEM) |
|---|---|
| Part Number | 175-2949 (1752949) |
| Part Type | Fuel/Water Separator |
| Filter Position | Primary |
| Installation | Spin-On with Drain |
| Efficiency Rating | Advanced Efficiency |
| Engine Compatibility | Cat C7, C9, C10, C12, C13, C15, C16, C18; 3406E, 3306, 3176 |
| Thread | 1″-14 UNS-2B |
| Outside Diameter | 3.69 in (93.7 mm) |
| Height | 7.38 in (187.7 mm) |
Cross References
This fuel/water separator replaces or is equivalent to the following part numbers:
- Fleetguard: FS19683
- Baldwin: BF1268
- Donaldson: P550847
- Wix: 33005
- NAPA: FIL3005
- Luber-Finer: LFF803
- Fram: PS9330
Applications
This fuel/water separator fits the following Caterpillar engine families:
- Cat C7 (2003–2009) and C9 (2003–2010)
- Cat C10, C11, C12 (1995–2007)
- Cat C13 (2004–2010) and C15 / C16 / C18 (2003–2010)
- Cat 3406E (1993–2002)
- Cat 3306, 3306B, 3306C industrial
- Cat 3176, 3176B, 3196
Representative vehicles and equipment using these engines:
- Class 8 trucks with Cat C12, C13, C15, or 3406E (Peterbilt, Kenworth, Freightliner, Western Star)
- Cat off-highway trucks: 769, 773, 775, 777 series
- Cat motor graders, wheel loaders, excavators, and pipelayers with C-series and 3300/3400 engines
The 175-2949 is used across dozens of Cat engine families. Verify your engine model, serial number, and current filter configuration before ordering.
