Fuel Filter Water Separator 156-1200 for Caterpillar CAT Engines & Excavators
156-1200 fuel water separator for Caterpillar 304E, 305, 308E and more. OEM cross-reference verified. Bulk and OEM orders welcome from IXIN Filter.
Description
This 156-1200 fuel water separator is manufactured to remove free water and emulsified water, along with fine contaminants, from diesel fuel before it reaches the injection system. It’s designed as a direct replacement for the Caterpillar 156-1200 secondary fuel/water separator element, used across a wide range of CAT mini excavators, skid steers, and compact equipment.
Product Overview
Water and fine particulate contamination in diesel fuel are two of the most common causes of injector damage and fuel system failure in compact and mid-size construction equipment. The 156-1200 fuel water separator uses a pleated filter media designed to separate water from fuel while capturing particulate contamination, helping protect the fuel injection system and extend engine service life. Each unit is dimensionally verified against OEM specifications and tested for filtration performance before shipment.
Fits the Following Caterpillar Models & Engines
| Category | Models / Engines |
|---|---|
| Compact Excavators | CAT 301.6, 303C, 304E, 305, 307E, 308E |
| Skid Steers / Compact Track Loaders | CAT 216B, 226B, 232, 257B |
| Wheel Loaders / Backhoe | CAT 901C, 902C, 903C, 904B |
| Engines | Caterpillar 3003, 3013, 3013C, 3024, 3024C, 3034, 3054C, C1.1, C1.5, C2.2, C4.4 |
Always confirm your machine’s serial number range against the OEM cross-reference before ordering, as fuel system filtration specifications can vary across production years within the same model.
OEM Cross-Reference Numbers
| Brand | Number |
|---|---|
| Caterpillar | 156-1200, 1561200 |
| Donaldson | P551423 |
| Baldwin | BF7675-D, BF7665, BF9835D |
| Fleetguard | FS19831, FS19860, FS19621, FS19573, FS19838 |
| WIX | 33531, 33759 |
| Luberfiner | L8706F, L8683F |
| Mann | WK 8118, WK 8126 |
| John Deere | RE503747, RE568099, RE60021 |
Key Features
- High-efficiency water separation, designed to remove free water and the majority of emulsified water from diesel fuel
- Particulate filtration to protect fuel injectors and the fuel injection system from contamination
- Dimensionally verified against OEM specifications, not just cross-reference number matching
- Consistent batch quality control, with raw material and pre-shipment testing on every production run
- Broad cross-reference coverage, matching major aftermarket brands including Donaldson, Baldwin, Fleetguard, and WIX
Specifications (Publicly Referenced Dimensions)
Dimensions below are compiled from publicly available cross-reference filter databases, including Fuel Filter Cross Reference, and are provided as a reference guide. Please verify against your machine’s actual filter housing or OEM documentation before bulk ordering — production-year variations within the same model can affect exact fitment.
| Spec | Detail |
|---|---|
| Height | 114 mm |
| Outer Diameter (Max) | 83 mm |
| Outer Diameter (Min) | 69 mm |
| Inner Diameter / Depth (Max) | 17 mm |
| Filter Type | Secondary fuel/water separator element |
| Filter Media | Pleated water-separating media |
| Application | Compact excavators, skid steers, wheel loaders, backhoes |
| Packaging Options | Standard retail box, bulk carton, or private-label packaging available |
Why Source This Fuel Water Separator from IXIN Filter
We manufacture this 156-1200 fuel water separator in our own production facility, with quality control checkpoints from raw material inspection through final pre-shipment testing. If you’re sourcing for a distribution business or fleet, we can provide:
- Sample units for independent testing before a bulk order
- Documentation on OEM cross-reference verification
- Flexible MOQ and private-label packaging options
- Consistent batch-to-batch quality for repeat orders
Frequently Asked Questions
What does a fuel water separator actually do? It removes water and fine particulate contamination from diesel fuel before it reaches the fuel injection system, helping prevent injector damage, corrosion, and fuel system failure.
Is this a direct replacement for the CAT 156-1200? Yes. This filter is manufactured to match the OEM 156-1200 specification and is cross-referenced against major aftermarket brands including Donaldson, Baldwin, Fleetguard, and WIX.
Will this fit all the models listed? It fits the compact excavator, skid steer, and wheel loader models listed above, but fuel system configurations can vary by production year and serial number range. We recommend confirming your machine’s specific configuration before ordering, especially for bulk purchases.
Do you offer samples before a bulk order? Yes. We recommend requesting a sample for independent testing before committing to a bulk order, especially for first-time buyers.
Ready to order or request a sample? Contact IXIN Filter for pricing, MOQ, and lead time on the 156-1200 fuel water separator.





