Fassi Gru FI777, direct aftermarket replacement. This filter is an aftermarket hydraulic filter element designed as a direct replacement for filters from brands including Airfil, Atos, Caterpillar, Donaldson, and others. It features inorganic microfibers with a 12 µm filtration rating and a collapse pressure of 20 bar. With flow direction out-in, a total height of 230 mm, outer diameter of 54 mm, and largest inner diameter of 27.4 mm, this filter suits hydraulic systems in equipment from Caterpillar, Imer, Manitou, and Merlo. It offers a cost-effective alternative without compromising on build quality.
Technical properties & cross references
Specifications
| Element Collapse pressure |
20 bar (290 PSI) |
| Filtration Media |
Inorganic Microfibers 12 µm |
| Media type |
Inorganic Microfibers |
| Filtration Rating |
12 µm |
| Flow direction |
Out-In |
| Total Height |
230 mm (9 1/16") |
| Largest Inner Diameter |
27.4 mm (1 3/32") |
| Outer Diameter |
54 mm (2 1/8") |
| Largest Outer Diameter |
56 mm (2 7/32") |
| Stat. HS-Code |
84149000 |
| Country of Manufacture |
China |
Price beat guarantee
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller |
Price |
Checked |
| FilterFinder Online |
USD 42.00 |
11 Oct 2026 |
| Oxfil |
USD 47.07 |
16 Oct 2026 |
| Filtration Point |
USD 61.24 |
11 Oct 2026 |
| Cardinal Filters |
USD 75.59 |
11 Oct 2026 |
| Hydrafil |
USD 102.95 |
11 Oct 2026 |
| Spare Part Mart |
USD 33.60 |
Today |
Our price of USD 33.60 is 20% to 67% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Use cases & applications
Hydraulic Oil Filtration in Mobile Plant
In excavators and loaders operating in dusty conditions, this filter traps 12 µm particles to protect pumps and valves. The inorganic microfibers handle high contaminant loads without clogging prematurely, extending service intervals.
Continuous-Duty Industrial Hydraulics
For presses and injection moulding machines running 24/7, the 20 bar collapse rating ensures the element withstands pressure spikes. Out-in flow directs contaminants to the outer layers, maximising dirt-holding capacity.
Fleet Maintenance Standardisation
By stocking one filter that cross-references multiple brands like Donaldson and Fleetguard-ST, workshops can simplify inventory. The 230 mm height and 54 mm OD fit common hydraulic filter housings across different equipment makes.
Replacement for Off-Highway Equipment
Telehandlers and forklifts from Manitou and Merlo benefit from this filter's consistent 12 µm rating. The robust construction resists vibration and cyclic loads common in rough terrain applications.
Frequently asked questions
How do I confirm this filter fits my machine?
Check your original filter's part number against our cross-reference list covering Airfil, Atos, Caterpillar, Donaldson, Fai Filtri, Fantuzzi, Fassi Gru, Fleetguard-ST, Ikron, Imer, Manitou, Merlo, Omt, Oxfil, Sofima (UFI), and Woodgate. If your part number is not listed, compare the dimensions: total height 230 mm, outer diameter 54 mm, largest outer diameter 56 mm, and largest inner diameter 27.4 mm.
What is the filtration rating and media?
The filter uses inorganic microfibers with a 12 µm filtration rating. This media type provides high efficiency and dirt-holding capacity for hydraulic systems.
What are the key dimensions and thread details?
The element has a total height of 230 mm, outer diameter of 54 mm, largest outer diameter of 56 mm, and largest inner diameter of 27.4 mm. Flow direction is out-in. Thread specifications are not provided; refer to your housing's requirements.
Is this an OEM or genuine filter?
This is an aftermarket replacement built to the original dimensions and ratings. It is not branded as genuine or OEM but is a direct cross-reference for the listed brands.
How do I install this filter element?
Installation follows standard hydraulic filter replacement: ensure the system is depressurised, remove the old element, clean the housing, lubricate the gasket, and insert the new element with flow direction out-in. Tighten according to manufacturer torque specs.
What delivery and guarantee options are available?
We offer worldwide shipping with tracking, a 30-day money-back guarantee, and a price-beat guarantee. Specific delivery times and warranty periods are not stated; contact us for details.