- 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 375 specs: hp, weight, years
CUMMINS QSX-15 six-cylinder diesel. The manufacturer claimed 369.9 horsepower. The only laboratory test on record is of one version: OECD Test 1955 measured 386.6 hp at the PTO of the STX 375 (Articulated 4 WD). Compared at the engine's rated speed, where the brochure figure is quoted, the shaft gave 337.9 hp — 8.6% below the claim.
Engine power, claimed · gross or net not stated
369.9 hp
275.8 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Case-IH STX 375”, 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
- 37,620 lb
- Hyd. flow
- 40.9 gpm
- Top speed
- 18.6 mph
Case-IH STX 375 specs: key facts
The Case-IH STX 375 was built from 2000 to 2005.
Only one version of the Case-IH STX 375 has a laboratory test on record: the STX 375 (Articulated 4 WD) produced 288.3 kW (386.6 hp) at the PTO, measured on OECD Test 1955.Source 2
The Case-IH STX 375 has a claimed engine power (gross or net not stated) of 275.8 kW (369.9 hp); it has no measured PTO figure.
The Case-IH STX 375 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 375 has a CUMMINS QSX-15 engine, a 6-cylinder 14.95 L diesel unit.Source 4
The Case-IH STX 375 weighs 17,064 kg (37,620 lb) unladen.
The Case-IH STX 375 has a rear PTO running at 1000 rpm.
The hydraulic pump of the Case-IH STX 375 delivers 154.8 L/min (40.9 gpm).
Source · Traktorenlexikon, “Case-IH STX 375”
How does the STX 375 compare with its class?
We will not rate this machine against its class. Only 21 published tractors sit within 10% of its 276 kW — too few to say what is normal.
Derived by WhichTractor. How we work this out
How much horsepower does an STX 375 have?
The only laboratory test on record is of one version. OECD Test 1955 measured 386.6 hp at the PTO of the STX 375 (Articulated 4 WD). For the STX 375 as a whole the figure is the 369.9 hp claimed for the engine, which is not power at the shaft.
Sources · Traktorenlexikon, “Case-IH STX 375”; OECD test report 1955, 2002
What engine is in an STX 375?
An STX 375 has a CUMMINS QSX-15, a 6-cylinder 14.95 L diesel engine.
| Make & model | CUMMINS QSX-15 |
|---|---|
| Cylinders | 6, liquid-cooledSource 3 |
| Displacement | 912.0 ci · 14.95 L |
| Aspiration | supercharged |
| Max torque | 1,325 lb·ft · 1,797 N·m @ 1,198 rpmSource 3 |
| Electrical system | 12 VSource 3 |
Source · Traktorenlexikon, “New Holland TJ375”
How much will an STX 375 lift, and what is its hydraulic flow?
Hydraulic and PTO specifications for the STX 375 are below.
| System | Closed centreSource 2 |
|---|---|
| Pump flow | 40.9 gpm · 154.8 L/min |
| Pressure | 2,698 psi · 186 bar |
| Hitch category | Category 4 |
| Rear PTO | 1000 rpm |
| PTO shaft | 1 3/4"- 20 splined (Form-3) |
Source · Traktorenlexikon, “Case-IH STX 375”
What transmission does an STX 375 have?
Transmission specifications for the STX 375 are below.
| Steering | Hydrostatic EATON steering, series 25 |
|---|---|
| Top speed | 18.6 mph · 30 km/h |
Source · Traktorenlexikon, “Case-IH STX 375”
How much does an STX 375 weigh?
An STX 375 weighs 37,620 lb (17,064 kg) unladen.
| Unladen weight | 37,620 lb · 17,064 kg |
|---|---|
| Maximum permissible mass | 39,683 lb · 18,000 kg |
| Maximum front axle load | 24,251 lb · 11,000 kg |
| Maximum rear axle load | 16,535 lb · 7,500 kg |
| Wheelbase | 154.0 in · 3,911 mm |
| Length | 297.6 in · 7,558 mm |
| Width | 153.0 in · 3,886 mm |
| Height | 143.0 in · 3,631 mm |
| Front track | 75.0–129.0 in · 1,905–3,277 mmWikibooks gives one track for both axles |
| Rear track | 75.0–129.0 in · 1,905–3,277 mmWikibooks gives one track for both axles |
Source · Traktorenlexikon, “Case-IH STX 375”
What oil does an STX 375 take, and how much?
An STX 375 engine takes 52.0 qt (49.2 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 52.0 qt · 49.2 LSource: Traktorenlexikon, “Case-IH STX 375” · single source, not independently verified |
| Transmission | 80.4 qt · 76.1 LSource: Traktorenlexikon, “Case-IH STX 375” · single source, not independently verified |
| Hydraulic | 317.0 qt · 300.0 LSource: Traktorenlexikon, “Case-IH STX 375” · single source, not independently verified |
| Cooling system | 45.5 qt · 43.1 LSource: Traktorenlexikon, “Case-IH STX 375” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
How much fuel does an STX 375 burn per hour?
Measured on OECD Test 1955 (tested as the STX 375 (Articulated 4 WD)), 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 288.3 kW (386.6 hp) at 801 rpm | 72.15 L/h 19.06 gal/h |
| Rated engine speedPTO 252.0 kW (337.9 hp) at 1,001 rpm | 72.17 L/h 19.07 gal/h |
| Standard PTO speedPTO 252.0 kW (337.9 hp) at 1,001 rpm | 72.17 L/h 19.07 gal/h |
| 75% load, 50% load | Not on record for this test |
Source · OECD Test 1955
Which tractors compare with an STX 375?
Within 10% of its 369.9 hp of claimed engine power, the same type, and first built within 15 years of it.
- New Holland TJ-375369.9 hp engine, claimed · 2001–2005Side by side with the STX 375 →
- Case-IH 9180369.9 hp engine, claimed · 1987–1990Side by side with the STX 375 →
- John Deere 8960365.2 hp engine, claimed · 1989–1993Side by side with the STX 375 →
- New Holland TJ-380374.8 hp engine, claimed · 2005–2007Side by side with the STX 375 →
- Case-IH 9280374.8 hp engine, claimed · 1990–1995Side by side with the STX 375 →
- Ford 976360.1 hp engine, claimed · 1988–1993Side by side with the STX 375 →
Common questions about the Case-IH STX 375
Is an STX 375 two-wheel drive or four-wheel drive?
The Case-IH STX 375 was built in four-wheel drive (4WD) and four-wheel drive with equal-size wheels versions, depending on configuration.
What PTO does an STX 375 have?
An STX 375 has a 1000 rpm rear PTO on a 1 3/4"- 20 splined (Form-3) shaft.
Sources and how this page was built
Compiled from OECD tractor test report 1955; Traktorenlexikon, “New Holland TJ375”; and Traktorenlexikon, “Case-IH STX 375”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- OECD Code 2 test report 2/1 955: Case IH STX 375 — Licence not stated by the publisher; facts cited, OECD-1955 · published 2001-05-29 · retrieved 2026-09-14. OECD. Original document
- OECD Code 2 test report 2/1 955/1: New Holland TJ 375 — Licence not stated by the publisher; facts cited, OECD-1955 · published 2002-02-22 · retrieved 2026-09-14. OECD. Original document
- Traktorenlexikon: Case-IH STX 375 — CC BY-SA 4.0, WIKIBOOKS-TL-115863 · revision 985164. Wikibooks contributors (Traktorenlexikon). Original document
- Traktorenlexikon: New Holland TJ375 — CC BY-SA 4.0, WIKIBOOKS-TL-111250 · revision 993203. Wikibooks contributors (Traktorenlexikon). Original document