Agricultural tractorsSpec sheet
Challenger MT665D
The Challenger MT665D is a powerful 4-wheel drive tractor built for serious farming. It has a strong Sisu Diesel engine with 6 cylinders and 298.9 horsepower. This engine is turbocharged and cooled by air and liquid, which helps it work hard in tough conditions. The tractor uses diesel fuel and has a special system to reduce harmful emissions. This big tractor is 215.7 inches long and 141 inches tall, weighing 25,365 pounds. It has large agricultural tires, with the front tires being 70 inches tall and the back tires 85 inches tall. The MT665D has a comfortable cab for the driver and uses a high-tech transmission that can change speeds smoothly. It also has a strong hydraulic system that can lift heavy equipment. The tractor is designed to be quiet, with a sound level of 71 decibels in the cab when not working. Special features like Quadlink suspension and wet disc brakes make it safer and more comfortable to drive.
ManufacturerChallengerPower298.9 hp(222.9 kW)Class150–300 HP tractors →Engine6-cylinderTransmissionContinuously Variable Transmission
Key specifications
- Category
- Agricultural
- Engine power
- 299hp
- Operating weight
- 25,365 lb
- Transmission
- Continuously Variable Transmission
Category comparison
MT665D compared with its category
vs. Agricultural medianDistribution
Engine Power (hp)
All recorded Agricultural tractors
298.9 hp · 93rd
This model
13
Median 110 hp
282
This modelAgricultural tractorsMediann = 1,028
The MT665D ranks at the 93rd percentile for engine power among recorded agricultural tractors.
Overview
About the Challenger MT665D
The Challenger MT665D is a powerful 4-wheel drive tractor built for serious farming. It has a strong Sisu Diesel engine with 6 cylinders and 298.9 horsepower. This engine is turbocharged and cooled by air and liquid, which helps it work hard in tough conditions. The tractor uses diesel fuel and has a special system to reduce harmful emissions. This big tractor is 215.7 inches long and 141 inches tall, weighing 25,365 pounds. It has large agricultural tires, with the front tires being 70 inches tall and the back tires 85 inches tall. The MT665D has a comfortable cab for the driver and uses a high-tech transmission that can change speeds smoothly. It also has a strong hydraulic system that can lift heavy equipment. The tractor is designed to be quiet, with a sound level of 71 decibels in the cab when not working. Special features like Quadlink suspension and wet disc brakes make it safer and more comfortable to drive.
Full specifications
Recorded specifications
General
| Manufacturer | Challenger |
|---|---|
| Model | MT665D |
| Category | Agricultural tractor |
| Type | 4WD |
| Operating weight | 25,365lb(11,510 kg) |
Engine
| Make | Sisu Diesel |
|---|---|
| Power | 298.9hp(222.9 kW) |
| Cylinders | 6 |
| Displacement | 513.8ci(8.42 L) |
| Bore | 4.37in(111 mm) |
| Stroke | 5.71in(145 mm) |
Transmission
| Type | Continuously Variable Transmission |
|---|
Chassis & drive
| Chassis | 4WD |
|---|---|
| Drive | 4 Wheel Drive |
| Steering | Hydrostatic Power |
| Cab | Cab |
Hydraulics
| Type | Closed Center Load Sensing (CCLS) |
|---|
Dimensions
| Length | 215.7in(5,479 mm) |
|---|---|
| Height | 141in(3,581 mm) |
| Operating weight | 25,365lb(11,510 kg) |
Closest alternatives
MT665D compared with the nearest models by horsepower
The closest agricultural models to the Challenger MT665D by rated horsepower are the Challenger MT765 and the New Holland 9480. The Challenger MT765 matches it on rated power and weighs 3,980 lb more, at 98 lb per horsepower against 85 lb. The New Holland 9480 makes 1.1 hp more and weighs 1,200 lb less.
| Spec | Challenger MT665D | Challenger MT765 | New Holland 9480 |
|---|---|---|---|
| Engine power | 298.9 hp222.9 kW | 298.8 hp222.8 kW | 300 hp223.7 kW |
| Operating weight | 25,365 lb11,505 kg | 29,345 lb13,311 kg | 24,165 lb10,961 kg |
| Weight per hp | 85 lb/hp52 kg/kW | 98 lb/hp60 kg/kW | 81 lb/hp49 kg/kW |
| Displacement | 513.8 ci8.42 L | 537 ci8.8 L | 855 ci14.01 L |
| Cylinders | 6 | 6 | 6 |
| Transmission | Continuously Variable Transmission | Selective gear fixed ratio with full range operator-controlled power shift | Partially synchronized and full power shift |
Calculators
Calculators for the MT665D
PTO power
About 248 to 269 PTO hp
Estimated from the 298.9 hp engine rating. The calculator also estimates drawbar power by surface.
Implement sizing
Implements a 298.9 hp tractor can run
Maximum size is about a 35.5 ft rotary cutter or a 30.5 ft tiller. The calculator also sizes discs, plows and balers.
Ballast
99 lb per PTO hp as listed
Heavy draft work calls for 110 to 125 lb/hp. The calculator gives the ballast to add.
Units
298.9 hp is 222.9 kW
The converter gives kW and metric PS values, as used on European spec sheets.
Category medians
MT665D vs. Agricultural median
Challenger MT665D compared with other Agricultural tractors
| Spec | This model | Agricultural median | Difference | Percentile |
|---|---|---|---|---|
| Engine Power | 299 hp | 110 hp | +172% | 93rd |
| Engine Displacement | 514 ci | 336 ci | +53% | 88th |
| Cylinders | 6 | 5.5 | +9% | 74th |
| Operating Weight | 25,365 lb | 10,914 lb | +132% | 92nd |
| Length | 216 in | 173 in | +25% | 88th |
| Height | 141 in | 111 in | +27% | 96th |
Medians and percentiles are calculated from the agricultural tractors in the database that have a recorded value for each specification (sample size 795–1,130 models).
Same manufacturer
Other Challenger models
Other manufacturers
Models with similar horsepower
Gallery
Challenger MT665D photos
FAQ
Frequently asked questions
What is the engine power output of the Challenger MT665D?
Rated engine output for the Challenger MT665D is 298.9 hp, delivered by a 6-cylinder engine. The engine displaces 513.8 ci.
What is the operating weight of the Challenger MT665D?
The Challenger MT665D has an operating weight of about 25,365 lb.
Which transmission does the Challenger MT665D use?
The Challenger MT665D is equipped with a Continuously Variable Transmission transmission.
What hydraulics does the Challenger MT665D have?
The Challenger MT665D uses a Closed Center Load Sensing (CCLS) hydraulic system.
What three-point hitch category does the Challenger MT665D use?
The Challenger MT665D has a Category III three-point hitch.
How do I maintain a Challenger MT665D?
Routine service for the Challenger MT665D covers engine oil and filter changes, hydraulic and coolant level checks, air filter cleaning, and scheduled inspections. Refer to the manufacturer's maintenance schedule for exact intervals.