Overview
The CaseIH Magnum 400 is a row-crop farm tractor produced in Racine, Wisconsin, since 2019, featuring an 8.7L 6-cylinder FPT diesel engine. This four-wheel drive model is equipped with a 21-speed full power shift transmission and is rated at a maximum gross engine power of 429 hp.
Ideal Applications
Tested Drawbar Performance:
Nebraska Tractor Test data recorded a maximum drawbar performance of 330.5 hp and a maximum pull of 34,744 lbs.
Hydraulic and Hitch Capacity:
The tractor is equipped with a pressure flow compensating hydraulic system providing 44 gpm and a rear Type IV/III hitch with a lift capacity of 19,900 lbs.
Engine and Fuel Specifications:
The Tier IV compliant engine features a 179-gallon fuel tank and a 26-gallon diesel exhaust fluid tank, with a maximum tested fuel use of 20.0 gallons per hour.
Production
| Description | Row-Crop tractor / Built in Racine, Wisconsin, USA / Original price was $603,480 in 2024 |
|---|---|
| Manufacturer | CaseIH (a part of CNH) |
Engine
| Engine type | FPT 8.7L 6-cyl diesel |
|---|---|
| Exhaust fluid (DEF) | 26 gal (98.4 L) |
| Fuel tank | 179 gal (677.5 L) |
| Bore/Stroke | 4.606x5.315 inches (117 x 135 mm) |
| Description | FPT / variable-geometry turbocharged diesel / 6-cylinder 24-valve / liquid-cooled inline |
| Displacement | 531 ci (8.7 L) |
| Emissions | Tier IV |
| Maximum Power (gross) | 429 hp (319.9 kW) |
| Rated Power (gross) | 391 hp (291.6 kW) |
| Rated RPM | 2000 |
| Starter | electric |
| Starter volts | 12 |
| Torque | 1364 lb-ft (1849.6 Nm) |
| Torque RPM | 1400 |
| Drawbar (tested) | 309.80 hp (231.0 kW) |
| Engine (gross) | 391 hp (291.6 kW) |
| Engine (max) | 429 hp (319.9 kW) |
| PTO (claimed) | 345 hp (257.3 kW) |
| PTO (tested) | 390.64 hp (291.3 kW) |
Transmission
| Gears | 21 forward and 5 reverse |
|---|---|
| Transmission | PowerDrive |
| Transmission type | 21-speed full power shift |
| Type | full power shift |
Mechanical
| Cab | Cab standard with air-conditioning. AFS |
|---|---|
| Description | Power steering / Hydraulic wet disc brakes |
| Differential lock | electro-hydraulic rear |
| Drive type | Four-wheel drive |
| Trailer brakes | hydraulic OptOptional |
Hydraulics
| Pressure | 3046 psi (210.0 bar) |
|---|---|
| Pump flow | 44 gpm (166.5 lpm) |
| Type | pressure flow compensating (PFC) |
| Valves | 5 or 6 |
Hitch
| Front lift | 9426 lbs (4275 kg) |
|---|---|
| Rear lift | 19900 lbs (9026 kg) |
| Rear Type | IV/III |
PTO
| Clutch | electro-hydraulic |
|---|---|
| Engine RPM | 540@1592 / 1000@1804 |
| Front PTO | independent |
| Front PTO Type | 1000 (1.375) |
| Rear PTO | independent |
| Rear PTO Type | 1000 (1.75) |
Electrical
| Batteries | 2 |
|---|---|
| Battery volts | 12 |
| Charging amps | 240 |
| Charging system | alternator |
| Ground | negative |
Dimensions & Tires
| Standard tires (ag) | Front: 420/85R34. Rear: 480/80R50 |
|---|---|
| Front tread | 60 to 88 inches (152 to 223 cm) |
| Height | 132.9 inches (337 cm) |
| Length | 256.1 inches (650 cm) |
| Max weight | 39683 lbs (18000 kg) |
| Rear axle | 5 by 120 inches (127 by 3048 mm) |
| Rear tread | 57.9 to 90.3 inches (147 to 229 cm) |
| Weight | 32200 lbs (14605 kg) |
| Wheelbase | 124 inches (314 cm) |
| Width | 100.4 inches*Width across rear fenders. (255 cm) |
| Front tire | 420/85R34 |
| Rear tire | 480/80R50 |
| Weight | 32200 lbs (14605 kg) |
| Wheelbase | 124 inches (314 cm) |
OCED Tractor Test 2242
| Description | Diesel Power shift 4WDOctober 4 - 12, 2022Link: OCED Tractor Test 2242 file / PTO performance / Drawbar performance / Gear 9 used for power test. / Gear 6 used for pull test. |
|---|---|
| Fuel use | 20.0 gal/hour (75.7 l/hour) / 18.3 gal/hour (69.3 l/hour) / 19.7 gal/hour (74.6 l/hour) / 18.4 gal/hour (69.6 l/hour) |
| Max power | 390.64 hp (291.3 kW) / 309.80 hp (231.0 kW) |
| Max pull | 29612 lbs (13432 kg) |
| Power at rated engine speed | 350.77 hp (261.6 kW) |
| Power at rated PTO speed | 385.04 hp (287.1 kW) |
References
| Description | Magnum AFS Connect published in 2019, by CaseIH / AFS Connect Magnum published in 2021, by CaseIH |
|---|
Variants
| Magnum 400 | wheeled |
|---|---|
| Magnum 400RT | half-track |
Nebraska Tractor Test Results
Test #2243
Test Date:
October 6 - 12, 2021
Location:
Nebraska Tractor Test Laboratory, University of Nebraska, Lincoln, Nebraska 68583-0832
This section is compiled from original Nebraska Tractor Test PDFs using AI-assisted extraction and human review. For full verification, download the source PDF above. Differences between reports, incomplete source data, and occasional extraction or data entry mistakes can occur.
Maximum Power & Fuel Consumption
Max Power (1 Hour)
388.38 hp
@ 1800 rpm
Rated Engine Speed
350.49 hp
N/A lb/hp·hr
Standard PTO Speed
382.58 hp
@ N/A rpm PTO
Torque Statistics
| Maximum Torque | 1,283 lb-ft (1,739 Nm) |
|---|---|
| Torque Rise | 39.3% |
| At Engine RPM | 1350 rpm |
PTO Power Curve
Maximum Power & Fuel Consumption Details
| Condition | HP | kW | RPM | PTO RPM |
|---|---|---|---|---|
| Rated Engine Speed | 350.49 | 261.36 | 1999 | 1155 |
| Maximum Power (1 Hour) | 388.38 | 289.62 | 1800 |
Varying Power & Fuel Consumption
Click column headers to sort
| Power | RPM | gal/hr | lb/hp·hr | hp·hr/gal | DEF gal/hr |
|---|---|---|---|---|---|
| 350.49 | 1999 | 18.29 | 0.36 | 19.17 | 1.90 |
| 311.35 | 2090 | 16.75 | 0.38 | 18.59 | 1.57 |
| 237.83 | 2131 | 13.36 | 0.39 | 17.81 | 1.18 |
| 162.11 | 2174 | 10.03 | 0.43 | 16.16 | 0.79 |
| 82.30 | 2208 | 6.58 | 0.56 | 12.51 | 0.42 |
| 1.28 | 2226 | 3.06 | 16.76 | 0.42 | 0.15 |