Agricultural tractorsSpec sheet
Challenger MT845B
The Challenger MT845B is a powerful tractor designed for heavy-duty farming tasks. It features a Caterpillar C15 ACERT engine, which is a 6-cylinder, diesel-powered unit that delivers an impressive 402.32 hp. This engine is turbocharged and air-to-air aftercooled, providing excellent performance in demanding conditions. The tractor has a 16-forward and 4-reverse gear transmission, giving farmers plenty of options for different tasks. This tractor is big and strong, measuring 265.9 inches long, 140.9 inches wide, and 138.1 inches tall. It weighs a hefty 42,900 lb, making it suitable for heavy fieldwork. The MT845B comes with a 3-point hitch (Category III/IVN) and a closed center hydraulic system. It also has some nice extras, like a PTO that can produce up to 387.05 hp at 1000 rpm. The track width can be adjusted from 100 to 120 inches, allowing farmers to customize the tractor for different row spacings or field conditions.
ManufacturerChallengerPower402.32 hp(300.0 kW)Class300+ HP tractors →Engine6-cylinderTransmissionselective gear fixed ratio with full range operator controlled power shift
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Key specifications
- Category
- Agricultural
- Engine power
- 402hp
- Operating weight
- 42,900 lb
- Transmission
- selective gear fixed ratio with full range operator controlled power shift
Category comparison
MT845B compared with its category
vs. Agricultural medianDistribution
Engine Power (hp)
All recorded Agricultural tractors
402.32 hp · 97th
This model
13
Median 110 hp
282
402.32
This modelAgricultural tractorsMediann = 1,028
The MT845B ranks at the 97th percentile for engine power among recorded agricultural tractors.
Overview
About the Challenger MT845B
The Challenger MT845B is a powerful tractor designed for heavy-duty farming tasks. It features a Caterpillar C15 ACERT engine, which is a 6-cylinder, diesel-powered unit that delivers an impressive 402.32 hp. This engine is turbocharged and air-to-air aftercooled, providing excellent performance in demanding conditions. The tractor has a 16-forward and 4-reverse gear transmission, giving farmers plenty of options for different tasks. This tractor is big and strong, measuring 265.9 inches long, 140.9 inches wide, and 138.1 inches tall. It weighs a hefty 42,900 lb, making it suitable for heavy fieldwork. The MT845B comes with a 3-point hitch (Category III/IVN) and a closed center hydraulic system. It also has some nice extras, like a PTO that can produce up to 387.05 hp at 1000 rpm. The track width can be adjusted from 100 to 120 inches, allowing farmers to customize the tractor for different row spacings or field conditions.
Full specifications
Recorded specifications
General
| Manufacturer | Challenger |
|---|---|
| Model | MT845B |
| Category | Agricultural tractor |
| Operating weight | 42,900lb(19,460 kg) |
Engine
| Make | Caterpillar |
|---|---|
| Model | C15 ACERT |
| Power | 402.32hp(300 kW) |
| Cylinders | 6 |
| Displacement | 928ci(15.21 L) |
| Bore | 5.4in(137.2 mm) |
| Stroke | 6.75in(171.5 mm) |
Transmission
| Type | selective gear fixed ratio with full range operator controlled power shift |
|---|---|
| Forward gears | 16 |
| Reverse gears | 4 |
Hydraulics
| Type | closed center pressure and flow compensated |
|---|
Dimensions
| Length | 265.9in(6,754 mm) |
|---|---|
| Width | 140.9in(3,579 mm) |
| Height | 138.1in(3,508 mm) |
| Operating weight | 42,900lb(19,460 kg) |
Closest alternatives
MT845B compared with the nearest models by horsepower
Among agricultural tractors, the Caterpillar D8L SA Special Application and the Challenger 1038 are closest to the Challenger MT845B in rated horsepower. The Caterpillar D8L SA Special Application is rated 2.3 hp lower and weighs 37,920 lb more, at 202 lb per horsepower against 107 lb. The Challenger 1038 makes 6.3 hp less and weighs 11,290 lb less, so it is lighter for its power, which favors PTO and transport work over heavy draft.
| Spec | Challenger MT845B | Caterpillar D8L SA Special Application | Challenger 1038 |
|---|---|---|---|
| Engine power | 402.3 hp300 kW | 400 hp298.3 kW | 396 hp295.3 kW |
| Operating weight | 42,900 lb19,459 kg | 80,820 lb36,659 kg | 31,615 lb14,340 kg |
| Weight per hp | 107 lb/hp65 kg/kW | 202 lb/hp123 kg/kW | 80 lb/hp49 kg/kW |
| Displacement | 928 ci15.21 L | 1,099 ci18.01 L | 758 ci12.42 L |
| Cylinders | 6 | 8 | 6 |
| Transmission | selective gear fixed ratio with full range operator controlled power shift | Power Shift | Continuously-Variable Transmission |
Calculators
Calculators for the MT845B
PTO power
About 334 to 362 PTO hp
Estimated from the 402.32 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 402.32 hp tractor can run
Maximum size is about a 48 ft rotary cutter or a 41 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
124 lb per PTO hp as listed
The calculator gives the target weight and front/rear split for each job.
Units
402.32 hp is 300.0 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Category medians
MT845B vs. Agricultural median
Challenger MT845B compared with other Agricultural tractors
| Spec | This model | Agricultural median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 402 hp | 110 hp | +266% | 97th |
| Engine Displacement | 928 ci | 336 ci | +177% | 97th |
| Cylinders | 6 | 5.5 | +9% | 74th |
| Forward Gears | 16 | 16 | at median | 50th |
| Operating Weight | 42,900 lb | 10,914 lb | +293% | 98th |
| Length | 266 in | 173 in | +54% | 98th |
| Width | 141 in | 79.5 in | +77% | 98th |
| Height | 138 in | 111 in | +25% | 95th |
Medians and percentiles are calculated from the agricultural tractors in the database that have a recorded value for each specification (sample size 497–1,130 models).
Same manufacturer
Other Challenger models
Other manufacturers
Models with similar horsepower
FAQ
Frequently asked questions
How much horsepower does the Challenger MT845B have?
The Challenger MT845B produces 402.32 hp from its 6-cylinder engine. Engine displacement is 928 ci.
What hydraulics does the Challenger MT845B have?
The Challenger MT845B uses a closed center pressure and flow compensated hydraulic system.
What three-point hitch category does the Challenger MT845B use?
The Challenger MT845B has a Category III/IVN three-point hitch.
How much does the Challenger MT845B weigh?
The Challenger MT845B weighs about 42,900 lb in operating condition.
What transmission is in the Challenger MT845B?
Transmission on the Challenger MT845B is selective gear fixed ratio with full range operator controlled power shift, with 16 forward speeds.
What maintenance does the Challenger MT845B require?
The Challenger MT845B needs periodic engine oil and filter changes, hydraulic fluid checks, and regular greasing and inspection. The owner's manual lists the manufacturer's recommended service intervals.