- Rigid chassis
- WhichTractor size: High-power
- Lab tested ×1
- 2002–2005
It sits on the standard-size/high-power boundary, so either size is a fair description. 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 MX 255 specs: hp, weight, years
CUMMINS 6 TAA-8304 six-cylinder diesel or Consolidated Diesel 6TAA-8304. The manufacturer claimed 258.4 horsepower. The only laboratory test on record is of one version: OECD Test 2188 measured 248.2 hp at the PTO of the MX 255 (4 WD). Compared at the engine's rated speed, where the brochure figure is quoted, the shaft gave 219.3 hp — 15.2% below the claim.
Engine power, claimed · gross or net not stated
258.4 hp
192.7 kW as stated by the source
No lab test on file
Claimed · standard not stated by the source
Source · Traktorenlexikon, “Case-IH MX255”, 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
- 21,559 lb
- 3-point lift
- 17,939 lb
- Hyd. flow
- 38.6 gpm
- Top speed
- 24.9 mph
Case-IH MX 255 specs: key facts
The Case-IH MX 255 was built from 2002 to 2005.
Only one version of the Case-IH MX 255 has a laboratory test on record: the MX 255 (4 WD) produced 185.1 kW (248.2 hp) at the PTO, measured on OECD Test 2188.Source 2
The Case-IH MX 255 has a claimed engine power (gross or net not stated) of 192.7 kW (258.4 hp); it has no measured PTO figure.
The Case-IH MX 255 is four-wheel drive (4WD).Source 2
The Case-IH MX 255 has a CUMMINS 6 TAA-8304 engine, a 6-cylinder 8.27 L diesel unit.
The Case-IH MX 255 weighs 9,779 kg (21,559 lb) unladen.
The Case-IH MX 255 has an independent rear PTO running at 1000 rpm.
The three-point hitch of the Case-IH MX 255 lifts 8,137 kg (17,939 lb) at the lower-link ends.
The hydraulic pump of the Case-IH MX 255 delivers 146.1 L/min (38.6 gpm).
Source · Traktorenlexikon, “Case-IH MX255”
How much horsepower does an MX 255 have?
The only laboratory test on record is of one version. OECD Test 2188 measured 248.2 hp at the PTO of the MX 255 (4 WD). For the MX 255 as a whole the figure is the 258.4 hp claimed for the engine, which is not power at the shaft.
Sources · Traktorenlexikon, “Case-IH MX255”; OECD test report 2188, 2004
What engine is in an MX 255?
An MX 255 has a CUMMINS 6 TAA-8304, a 6-cylinder 8.27 L diesel engine. MX 255 (4 WD) tractors have a Consolidated Diesel 6TAA-8304.
| Make & model | CUMMINS 6 TAA-8304 |
|---|---|
| Cylinders | 6, liquid-cooled |
| Displacement | 504.5 ci · 8.27 L |
| Max torque | 878 lb·ft · 1,191 N·m @ 1,400 rpm |
| Injection | electronic Cummins injection pump |
| Electrical system | 12 V |
Source · Traktorenlexikon, “Case-IH MX255”
How much will an MX 255 lift, and what is its hydraulic flow?
An MX 255 lifts 17,939 lb (8,137 kg) at the lower-link ends of its Category 3 three-point hitch.
| System | Closed centreSource 2 |
|---|---|
| Pump flow | 38.6 gpm · 146.1 L/min |
| Pressure | 3,597 psi · 248 bar |
| Hitch category | Category 3 |
| Lift at ends | 17,939 lb · 8,137 kg |
| Rear PTO | Independent, engine-driven, 1000 rpmEngages under load |
| PTO shaft | 1 3/8"- 21 spline |
Source · Traktorenlexikon, “Case-IH MX255”
What transmission does an MX 255 have?
Transmission specifications for the MX 255 are below.
| Clutch | Case-IH multi-disc clutch running in oil bath |
|---|---|
| Brakes | Pedal-operated hydraulic full disc brake acting on differential side shafts |
| Steering | Hydrostatic Eaton steering with two double-acting steering cylinders |
| Top speed | 24.9 mph · 40 km/h |
Source · Traktorenlexikon, “Case-IH MX255”
How much does an MX 255 weigh?
An MX 255 weighs 21,559 lb (9,779 kg) unladen.
| Unladen weight | 21,559 lb · 9,779 kg |
|---|---|
| Maximum permissible mass | 30,865 lb · 14,000 kg |
| Wheelbase | 118.3 in · 3,005 mm |
| Length | 224.0 in · 5,690 mm |
| Width | 120.0–150.0 in · 3,048–3,810 mm |
| Height | 124.0 in · 3,150 mm |
| Ground clearance | 13.8 in · 350 mm |
| Front track | 60.0–88.0 in · 1,524–2,235 mm |
| Rear track | 64.0–129.0 in · 1,626–3,277 mm |
Source · Traktorenlexikon, “Case-IH MX255”
What oil does an MX 255 take, and how much?
An MX 255 engine takes 20.1 qt (19.0 L). Single source, not independently verified — always confirm against the operator’s manual for your machine.
| System | Capacity |
|---|---|
| Engine oil | 20.1 qt · 19.0 LSource: Traktorenlexikon, “Case-IH MX255” · single source, not independently verified |
| Transmission & hydraulic | 181.8 qt · 172.0 LSource: Traktorenlexikon, “Case-IH MX255” · single source, not independently verified |
| Front axle | 12.4 qt · 11.7 LSource: Traktorenlexikon, “Case-IH MX255” · single source, not independently verified |
| Cooling system | 28.5 qt · 27.0 LSource: Traktorenlexikon, “Case-IH MX255” · single source, not independently verified |
Always confirm against the operator’s manual for your machine before service.
How much fuel does an MX 255 burn per hour?
Measured on OECD Test 2188 (tested as the MX 255 (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 185.1 kW (248.2 hp) at 827 rpm | 49.64 L/h 13.11 gal/h |
| Rated engine speedPTO 163.5 kW (219.3 hp) at 1,003 rpm | 47.20 L/h 12.47 gal/h |
| Standard PTO speedPTO 163.5 kW (219.3 hp) at 1,003 rpm | 47.20 L/h 12.47 gal/h |
| 75% load, 50% load | Not on record for this test |
Source · OECD Test 2188
Which tractors compare with an MX 255?
Within 10% of its 258.4 hp of claimed engine power, the same type, and first built within 15 years of it.
- Steyr-Case 9270a257.6 hp engine, claimed · 1997–1999Side by side with the MX 255 →
- Case-IH 7250 PRO/8950257 hp engine, claimed · 1997–1999Side by side with the MX 255 →
- Lamborghini 265 Traction259.4 hp engine, claimed · 1994–1998Side by side with the MX 255 →
- Deutz-Fahr Agrotron 260 MK3256.7 hp engine, claimed · 2001–2003Side by side with the MX 255 →
- Massey Ferguson 8470256.7 hp engine, claimed · 2004–2008Side by side with the MX 255 →
- Massey Ferguson 8280A256.7 hp engine, claimed · 1999–2002Side by side with the MX 255 →
Common questions about the Case-IH MX 255
Is an MX 255 two-wheel drive or four-wheel drive?
The Case-IH MX 255 is four-wheel drive (4WD).
What PTO does an MX 255 have?
An MX 255 has a independent 1000 rpm rear PTO on a 1 3/8"- 21 spline shaft.
Sources and how this page was built
Compiled from OECD tractor test report 2188; and Traktorenlexikon, “Case-IH MX255”.
Sources
Facts taken from these documents, units converted. Numbers beside a figure refer to this list. Licences and attribution
- OECD Code 2 test report 2/2 187: New Holland TG 255 — Licence not stated by the publisher; facts cited, OECD-2187 · published 2004-10-25 · retrieved 2026-09-14. OECD. Original document
- OECD Code 2 test report 2/2 188: Case IH MX 255 — Licence not stated by the publisher; facts cited, OECD-2188 · published 2004-10-25 · retrieved 2026-09-14. OECD. Original document
- Traktorenlexikon: Case-IH MX255 — CC BY-SA 4.0, WIKIBOOKS-TL-90521 · revision 983929. Wikibooks contributors (Traktorenlexikon). Original document