Fiat 25 cc anticlockwise: tractor hydraulic gear pump replacement reference
This 25 ml/rev anticlockwise Fiat item is the largest displacement in the 200 bar quartet on the page. No individual OEM part number is printed. Use the actual casting photograph, drive shaft and flange dimensions to differentiate it from 14 and 19 ml/rev pumps that show the same connections and controlled-flow line.
Model identity and its limits
If the existing machine’s service documentation lists 25 cc anticlockwise, check the full cross-reference FIAT. The serial range and original pump details still determine the final match.
No specific tractor serial ranges are established here for 25 cc anticlockwise. Use the parts manual and existing hardware to complete the application check.

Technical specifications
| Reference / model | 25 cc anticlockwise |
|---|---|
| Product type | Tractor Hydraulic Gear Pump |
| Original reference numbers | FIAT |
| Applicable tractor models | Confirm from original pump / equipment parts list |
| Manufacturer reference | FIAT |
| Nominal displacement | 25 ml/rev |
| Maximum pressure | 200 bar |
| Rotational speed | 500–3000 rpm |
| Controlled flow rate | 18 L/min |
| Feed hole / connection | Ø20 |
| Discharge hole / connection | M18×1.5 |
| Rotation | anticlockwise (CCW) |
Interpreting the pressure listing
For the stated 25 ml/rev pump, the hydraulic system remains the limiting context. Mechanical fit alone is not a test of working flow or acceptable drive load.
Within the comparison set, 5180277 / 19 cc lists 19 ml/rev and 200 bar. That is a useful limit check for the 25 cc anticlockwise hydraulic request, not permission to alter the tractor’s original pump rating.
In addition to displacement, the table provides 18 L/min controlled flow. This is a separate selection datum and needs its own confirmation in the machine.
The stated speed is 500–3000 rpm. Before commissioning, verify the engine accessory drive ratio and that normal operating conditions do not exceed this listing.
Eliminating wrong-hand pumps
For this part, the drive runs counterclockwise. Obtain an end-on shaft photo so the assembly orientation can be checked unambiguously.
Ø20 and M18×1.5 are the recorded feed/discharge connection values. A mistaken swap between inlet and pressure ports should be resolved on the bench.
Drive rotationCCW
Displacement25 ml/rev
Connection checkØ20 / M18×1.5
Why catalog neighbours differ
The adjacent Fiat 5180277 / 19 cc part has direction CCW, while 25 cc anticlockwise is CCW. Rotation is a hard constraint even if two supplier listings show comparable capacities.
The complete assembly should be assessed, including drive-end engagement and the supply port.
Inspect the hydraulic drive
Confirm the tractor pump bracket is rigid and the shaft sits without axial force when 25 cc anticlockwise is installed. The original line arrangement should not load the aluminium body through unsupported fittings.
An incorrectly seated shaft coupling may damage both drive and pump even at light load.
A clear hydraulic pump RFQ
The enquiry for 25 cc anticlockwise should state expected order volume, required shipment term and any drawing that controls shaft projection. Mention whether this is a first sample or a repeat order.
Replacement evaluations can proceed faster when photographs show all sides rather than only the top cover.
Frequently checked details
Can different oil fittings be made to work with 25 cc anticlockwise?
Only after confirming the actual port thread or bore, sealing system and clearance. Do not assume an adapter makes a mechanically wrong pump correct.
Can 25 cc anticlockwise be used at any shaft speed?
No. The speed data is 500–3000 rpm; follow the actual equipment application and never assume an unlisted rpm rating.
Ordering, samples and shipping terms
Order quantities are set according to pump type and total order value. A small order of 1–2 pieces can be considered at a higher unit price; new customers may request 1–5 samples when the item is suitable. Mixed-model orders are available, normally with a combined order value of approximately USD 1,500.
Typical production schedules are 10–25 working days for standard items, 20–45 working days for customized components, and 45–120 working days for project equipment. Usual delivery terms are EXW, FOB, CIF and DAP. FCA, CFR, CPT, CIP and DDP can be discussed for specific shipments. Confirm the final schedule and terms with the quotation.
Third-party brand names and trademarks are used only for product identification and cross-reference. They remain the property of their respective owners; such references do not imply affiliation, sponsorship, authorization or endorsement.
Request a quotation for this pump
Send the old pump reference, quantity, photos and interface measurements to our sales team.
sales@netherlandsdrive.com

