WhichTractor
  • Articulated
  • WhichTractor size: High-power
  • Lab tested ×1
  • 2000–2002

WhichTractor size, not the maker’s category

Case-IH STX 440 Engine specifications

20 engine values on record for the STX 440.

Engine power, claimed · gross or net not stated

434.0 hp

323.6 kW as stated by the source

Not independently tested

Claimed · standard not stated by the source

Source · Traktorenlexikon, “Case-IH STX 440”, claimed

What engine is in an STX 440?

An STX 440 has a CUMMINS QSX-15, a 6-cylinder 14.95 L diesel engine.

Engine — CUMMINS QSX-15 specifications
Make & modelCUMMINS QSX-15Source 3
FuelDieselSource 3
Cylinders6Source 3
Displacement912.0 ci · 14.95 LSource 3
AspirationSuperchargedSource 3
CoolingLiquid-cooled
Fuel injectionHigh pressure injection
Maximum torque1,583 lb·ft · 2,146 N·m
Maximum torque speed1,100 rpm
Air cleanerDonaldson dry air filter with pre-separator
Cylinders6
Displacement15.8 qt · 14.9 L
Bore5.4 in · 137 mm
Stroke6.7 in · 169 mm
Rated engine speed2,000 rpm
Torque rise51.7 %

Source · Traktorenlexikon, “Case-IH STX 440”

How much fuel does an STX 440 use?

On OECD Test 1957, the STX 440 used 22.80 gal/h (86.3 L/h) at maximum power.

OECD Test 1957 — STX 440 as tested, configuration as printed: “Articulated 4 WD”
Fuel consumption, at maximum power22.80 gal/h · 86.3 L/h
Fuel consumption, at rated engine speed22.12 gal/h · 83.7 L/h
Fuel consumption, at standard PTO speed22.12 gal/h · 83.7 L/h
Engine speed, at maximum power1,700 rpm
Engine speed, at rated engine speed2,000 rpm
Engine speed, at standard PTO speed2,000 rpm
Maximum torque1,598 lb·ft · 2,166.0 N·m
Torque rise51.9%

Source · OECD test report 1957, 2001

Where this page comes from

20 engine values from Traktorenlexikon, “New Holland TJ375”; Traktorenlexikon, “Case-IH STX 440”; and OECD test report 1957, 2001.

Last verified

Not yet verified

Spotted an error?

Sources

Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution

  1. OECD Code 2 test report 2/1 957: Case IH STX 440 — Licence not stated by the publisher; facts cited, OECD-1957 · published 2001-05-31 · retrieved 2026-09-14. OECD. Original document
  2. Traktorenlexikon: Case-IH STX 440 — CC BY-SA 4.0, WIKIBOOKS-TL-115864 · revision 985168. Wikibooks contributors (Traktorenlexikon). Original document
  3. Traktorenlexikon: New Holland TJ375 — CC BY-SA 4.0, WIKIBOOKS-TL-111250 · revision 993203. Wikibooks contributors (Traktorenlexikon). Original document