Filter refers to the accessory that filters impurities or gases through filter paper. Generally, it refers to the car filter, which is an engine accessory.
According to different filtration functions, it is divided into: oil filter, fuel filter (gasoline filter, diesel filter, oil-water separator, hydraulic filter), air filter etc. The engine has three kinds of filters: air, oil, and fuel, which are generally called “three filters”, plus air conditioning filters, commonly known as four filters. They are responsible for the filtration of lubrication system, combustion system, engine air intake system, and cabin air circulation system.

- Oil Filter:
- Purpose: The primary function of the oil filter is to remove contaminants, such as dirt, metal particles, and carbon deposits, from the engine oil. If oil clean, the oil filter ensures proper lubrication of engine components, reduces friction, and let engine has long-life in service.
- Performance: Caterpillar oil filters are designed with high-efficiency filtration media, to capture even the smallest particles, ensuring good filtration performance, then the engine life will be extended, and the end user will save the maintenance cost in vehicle.
- Applications: Caterpillar oil filters are used widely Caterpillar’s range of construction and agricultural machinery, including excavators, loaders, tractors, and telehandlers. They are key components for maintaining the performance in Caterpillar vehicle. FONHO have full range Caterpillar oil filters for all Caterpillar vehicles.
- Fuel Filter:
- Purpose: The fuel filter is responsible for removing contaminants, such as dirt, water, and rust particles from the fuel tank to engine. It makes sure the engine has got clean fuel, then engine will be running more smoothly, more powerful.
- Performance: Caterpillar fuel filters features are in high filtration efficiency, high fuel flow rate, high water separator efficiency also.
- Applications: Caterpillar fuel filters are essential components for customers. Caterpillar fuel filters in backhoe loaders, excavators, and agricultural tractors are playing an important role in Caterpillar engines, which will give Caterpillar engine more power.
- Hydraulic Filter:
- Purpose: The hydraulic filter is to clean the hydraulic system of Caterpillar equipment, where it removes dirt, metal particles, and moisture in the hydraulic fluid. It makes sure smooth hydraulic operation, prevents problem hydraulic components, and keep system reliability.
- Performance: Caterpillar hydraulic filters feature high-quality filtration media that will keep the hydraulic liquid cleaner in the system.
- Applications: Caterpillar hydraulic filters are important components in various hydraulic systems of Caterpillar equipment, including hydraulic excavators, loaders, and telehandlers. High quality Caterpillar hydraulic filters could keep hydraulic system more smoothly in running, and more long-life in service.
The list of Caterpillar oil filter, fuel filter, hydraulic filter as following, welcome to inquiry with FONHO for more details.
| MANUFACTURER | REF NO. | MANUFACTURER | REF NO. |
| CAT | 273-5711 | CAT | 133-5673 |
| CAT | 377-6969 | CAT | 129-0373 |
| CAT | 1R-0713 | CAT | 391-3764 |
| CAT | 269-8325 | CAT | 439-5037 |
| CAT | 7W-2326 | CAT | 541-6956 |
| CAT | 7W-2327 | CAT | 228-9130 |
| CAT | 1R-0734 | CAT | 138-3100 |
| CAT | 1R-0739 | CAT | 156-1200 |
| CAT | 1R-0716 | CAT | 51-7951 |
| CAT | 1R-0714 | CAT | 438-5386 |
| CAT | 5I-7950 | CAT | 382-0664 |
| CAT | 2P-4004 | CAT | 326-1644 |
| CAT | 563-8152 | CAT | 1R-0724 |
| CAT | 119-4740 | CAT | 316-9954 |
| CAT | 108-1153 | CAT | 326-1643 |
| CAT | 51-7950 | CAT | 1R-1712 |
| CAT | 1R-1808 | CAT | 1R-1740 |
| CAT | 1R-1807 | CAT | 326-1642 |
| CAT | 7W2327 | CAT | 4415111 |
| CAT | 299-8229 | CAT | 308-1502 |
| CAT | 1R-0751 | CAT | 308-9679 |
| CAT | 1R-0750 | CAT | 2656F853 |
| CAT | 319-0844 | CAT | 422-7587 |
| CAT | 1R-0762 | CAT | 2339856 |
| CAT | 1R-0749 | CAT | 234-7967 |
| CAT | 1R-0753 | CAT | 093-7521 |
| CAT | 1R-0712 | CAT | 4T-6915 |
| CAT | 1R-0755 | CAT | 4T-6788 |
| CAT | 183-8187 | CAT | 144-0832 |
| CAT | 5I-7951 | CAT | 9U-6985 |
| CAT | 1P-2299 | CAT | 4I-3948 |
| CAT | 1R-0710 | CAT | 5I-8670 |
| CAT | 117-4089 | CAT | 185-0337 |
| CAT | 233-9856 | CAT | 144-6691 |
| CAT | 502-3341 | CAT | 1G-8878 |
| CAT | 361-9554 | CAT | 126-1816 |
| CAT | 1466695 | CAT | 126-1818 |
| CAT | 308-7298 | CAT | 310-1252 |
| CAT | 1R-0770 | CAT | 9T-6636 |
| CAT | 1R-0771 | CAT | 126-1817 |
| CAT | 1R-0769 | CAT | 465-6506 |
| CAT | 382-0664 | CAT | 6E-6408 |
| CAT | 423-8521 | CAT | 61-2501 |
| CAT | 423-8522 | CAT | 423-8525 |
| CAT | 423-8524 |
