- Articulated
- WhichTractor size: High-power
- Lab tested ×1
- 2000–2005
WhichTractor size, not the maker’s category
Derived by WhichTractor from a sourced three-point linkage. How we decide what a machine is
Case-IH STX 325 specs: hp, weight, years
CUMMINS 6 TAA-9304 six-cylinder diesel or Case 6TAA-9304. The manufacturer claimed 321 horsepower. The only laboratory test on record is of one version: OECD Test 1974 measured 320.8 hp at the PTO of the STX 325 (Articulated 4 WD with dual wheels). Compared at the engine's rated speed, where the brochure figure is quoted, the shaft gave 291.8 hp — 9% below the claim.
Engine power, claimed · gross or net not stated
321 hp
239 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Case-IH STX 325”, claimed
This is the maker’s own figure, measured at the engine. Power at the PTO is lower — by how much, for this machine, nobody has measured.
- Weight
- 31,934 lb
- 3-point lift
- 19,335 lb
- Hyd. flow
- 40.9 gpm
- Top speed
- 18.6 mph
Case-IH STX 325 specs: key facts
The Case-IH STX 325 was built from 2000 to 2005.
Only one version of the Case-IH STX 325 has a laboratory test on record: the STX 325 (Articulated 4 WD with dual wheels) produced 239.2 kW (320.8 hp) at the PTO, measured on OECD Test 1974.Source 1
The Case-IH STX 325 has a claimed engine power (gross or net not stated) of 239 kW (321 hp); it has no measured PTO figure.
The Case-IH STX 325 was built in four-wheel drive (4WD) and four-wheel drive with equal-size wheels versions, depending on configuration.Source 1
The Case-IH STX 325 has a CUMMINS 6 TAA-9304 engine, a 6-cylinder 8.85 L diesel unit.Source 3
The Case-IH STX 325 weighs 14,485 kg (31,934 lb) unladen.
The Case-IH STX 325 has a rear PTO running at 1000 rpm.
The three-point hitch of the Case-IH STX 325 lifts 8,770 kg (19,335 lb) at the lower-link ends.
The hydraulic pump of the Case-IH STX 325 delivers 154.8 L/min (40.9 gpm).
Source · Traktorenlexikon, “Case-IH STX 325”
How much horsepower does an STX 325 have?
The only laboratory test on record is of one version. OECD Test 1974 measured 320.8 hp at the PTO of the STX 325 (Articulated 4 WD with dual wheels). For the STX 325 as a whole the figure is the 321 hp claimed for the engine, which is not power at the shaft.
Sources · Traktorenlexikon, “Case-IH STX 325”; OECD test report 1974, 2002
What engine is in an STX 325?
An STX 325 has a CUMMINS 6 TAA-9304, a 6-cylinder 8.85 L diesel engine. STX 325 (Articulated 4 WD with dual wheels) tractors have a Case 6TAA-9304.
| Make & model | CUMMINS 6 TAA-9304 |
|---|---|
| Cylinders | 6, liquid-cooledSource 2 |
| Displacement | 540.0 ci · 8.85 L |
| Max torque | 1,062 lb·ft · 1,440 N·m @ 1,351 rpmSource 2 |
Source · Traktorenlexikon, “New Holland TJ325”
How much will an STX 325 lift, and what is its hydraulic flow?
An STX 325 lifts 19,335 lb (8,770 kg) at the lower-link ends of its Category 4 three-point hitch.
| Pump flow | 40.9 gpm · 154.8 L/min |
|---|---|
| Pressure | 2,698 psi · 186 bar |
| Hitch category | Category 4 |
| Lift at ends | 19,335 lb · 8,770 kg |
| Rear PTO | 1000 rpm |
| PTO shaft | 1 3/4"- 20 teilig (Form-3) |
Source · Traktorenlexikon, “Case-IH STX 325”
What transmission does an STX 325 have?
Transmission specifications for the STX 325 are below.
| Brakes | Pedal-operated hydraulic wet disc brake acting on the rear axle |
|---|---|
| Steering | Hydrostatic Eaton steering series 20 with two double-acting steering cylinders |
| Top speed | 18.6 mph · 30 km/h |
Source · Traktorenlexikon, “Case-IH STX 325”
How much does an STX 325 weigh?
An STX 325 weighs 31,934 lb (14,485 kg) unladen.
| Unladen weight | 31,934 lb · 14,485 kg |
|---|---|
| Maximum permissible mass | 39,022 lb · 17,700 kg |
| Wheelbase | 139.0 in · 3,531 mm |
| Length | 276.0 in · 7,010 mm |
| Width | 120.0–152.0 in · 3,048–3,861 mm |
| Height | 137.0 in · 3,480 mm |
| Front track | 60.2–130.0 in · 1,530–3,302 mmWikibooks gives one track for both axles |
| Rear track | 60.2–130.0 in · 1,530–3,302 mmWikibooks gives one track for both axles |
Source · Traktorenlexikon, “Case-IH STX 325”
What oil does an STX 325 take, and how much?
An STX 325 engine takes 29.2 qt (27.6 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 29.2 qt · 27.6 LSource: Traktorenlexikon, “Case-IH STX 325” · single source, not independently verified |
| Transmission | 54.0 qt · 51.1 LSource: Traktorenlexikon, “Case-IH STX 325” · single source, not independently verified |
| Hydraulic | 188.1 qt · 178.0 LSource: Traktorenlexikon, “Case-IH STX 325” · single source, not independently verified |
| Cooling system | 45.5 qt · 43.1 LSource: Traktorenlexikon, “Case-IH STX 325” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
How much fuel does an STX 325 burn per hour?
Measured on OECD Test 1974 (tested as the STX 325 (Articulated 4 WD with dual wheels)), at each condition the laboratory recorded.
Cost per hour = fuel used per hour × your fuel price (per litre, or per US gallon for the gal/h figure).
| Test condition | Fuel per hour |
|---|---|
| Maximum PTO powerPTO 239.2 kW (320.8 hp) at 901 rpm | 65.10 L/h 17.20 gal/h |
| Rated engine speedPTO 217.6 kW (291.8 hp) at 1,001 rpm | 60.92 L/h 16.09 gal/h |
| Standard PTO speedPTO 217.6 kW (291.8 hp) at 1,001 rpm | 60.92 L/h 16.09 gal/h |
| 75% load, 50% load | Not on record for this test |
Source · OECD Test 1974
Which tractors compare with an STX 325?
Within 10% of its 321 hp of claimed engine power, the same type, and first built within 15 years of it.
- New Holland TJ-325321 hp engine, claimed · 2001–2005Side by side with the STX 325 →
- Ford 946324.9 hp engine, claimed · 1989–1993Side by side with the STX 325 →
- New Holland TJ-330325.5 hp engine, claimed · 2001–2002Side by side with the STX 325 →
- New Holland T 9020330.4 hp engine, claimed · 2007–2010Side by side with the STX 325 →
- Case-IH 9270330.4 hp engine, claimed · 1990–1995Side by side with the STX 325 →
- Case-IH 9170330.4 hp engine, claimed · 1987–1990Side by side with the STX 325 →
Common questions about the Case-IH STX 325
Is an STX 325 two-wheel drive or four-wheel drive?
The Case-IH STX 325 was built in four-wheel drive (4WD) and four-wheel drive with equal-size wheels versions, depending on configuration.
What PTO does an STX 325 have?
An STX 325 has a 1000 rpm rear PTO on a 1 3/4"- 20 teilig (Form-3) shaft.
Sources and how this page was built
Compiled from OECD tractor test report 1974; Traktorenlexikon, “New Holland TJ325”; and Traktorenlexikon, “Case-IH STX 325”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- OECD Code 2 test report 2/1 974: Case IH STX 325 — Licence not stated by the publisher; facts cited, OECD-1974 · published 2002-02-22 · retrieved 2026-09-14. OECD. Original document
- Traktorenlexikon: Case-IH STX 325 — CC BY-SA 4.0, WIKIBOOKS-TL-115862 · revision 985163. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ325 — CC BY-SA 4.0, WIKIBOOKS-TL-111245 · revision 993202. Wikibooks contributors (Traktorenlexikon). Original document