Challenger MT665B
Power
290 hp
Production
2005-2008
Engine
Turbocharged diesel, 6-cylinder 24-valve
Transmission
TechStar
Drive
4WD
From the same series:
Introduction
Challenger MT665B Row-Crop Tractor
The Challenger MT665B is a row-crop tractor produced by AGCO in Beauvais, France, between 2005 and 2008. Designed for high-output agricultural operations, this model integrates advanced powertrain technology and a high-capacity hydraulic system to meet the requirements of professional farming.
Engine and Powertrain
The tractor is powered by a Sisu 84ETA engine, a 6-cylinder, 24-valve, 8.4-liter turbocharged diesel unit. It produces a rated output of 290 hp at 2200 RPM. The fuel system utilizes electronic direct injection, and the engine is liquid-cooled. Transmission options include the TechStar continuously variable transmission (CVT) for infinite speed control or a power shift transmission offering 18 forward and 9 reverse gears.
Hydraulics and Hitch
The hydraulic system is of the pressure flow compensated (PFC) type, delivering a total flow of 39 gpm (147.6 lpm) at a system pressure of 2900 psi. It supports between 4 and 6 valves. The rear hitch is a Category III type with a lift capacity of 15,600 lbs (7076 kg) measured at 24 inches behind the lift point. An optional front hitch is available with a lift capacity of 7,700 lbs (3492 kg).
Chassis and Operator Environment
Built with a four-wheel-drive configuration, the MT665B features inboard planetary final drives and electro-hydraulic differential locks on both axles. Braking is handled by hydraulic wet disc brakes. The cab comes standard with heating and air conditioning, with options for pneumatic cab suspension and automatic climate control to enhance operator comfort during extended field operations.
Power Take-Off (PTO)
The rear PTO is an independent system equipped with an electro-hydraulic wet disc clutch. It offers multiple speeds, including 540 and 1000 RPM, with optional 540E capability. The PTO shafts are configured for 1.375-inch or 1.75-inch diameters depending on the specific application requirements.
Conclusion
The Challenger MT665B is a high-horsepower row-crop machine suited for heavy-duty traction, large-scale cultivation, and the operation of demanding implements. Its combination of a high-torque Sisu engine, versatile transmission choices, and significant hydraulic capacity makes it a robust solution for professional agricultural enterprises.
Production Information of Challenger, MT665B
- Row-Crop tractor
- Built in Beauvais, France
| Manufacturer | Challenger (a part of AGCO) |
|---|
Dimension and Tires Information of Challenger, MT665B
| Rear tread | 60 to 88 inches [152 to 223 cm] |
|---|---|
| Wheelbase | 121.1 inches [307 cm] |
| Ground clearance | 22.4 inches [56 cm] |
| Height (cab) | 123.6 inches [313 cm] |
| Length | 206 inches [523 cm] |
| Bar rear axle | 4.33 by 118 inches [109 by 2997 mm] |
| Width | 118 inches [299 cm] |
| Ag front | 380/85R34 |
|---|---|
| Ag rear | 480/80R46 |
Engine Specifications of Challenger, MT665B
- Sisu 84ETA
- Liquid-cooled vertical inline
- 6-cylinder 24-valve
- Turbocharged diesel
| Coolant capacity | 35.6 qts [33.7 L] |
|---|---|
| Oil capacity | 20 qts [18.9 L] |
| Fuel system | Electronic direct injection |
| Compression | 17.5:1 |
| Pre-heating(optional) | 1000W coolant heater |
| Displacement | 513 ci [8.4 L] |
| Power | 290 hp [216.3 kW] |
| Air cleaner | Dual paper elements |
| Bore/Stroke | 4.370x5.709 inches [111 x 145 mm] |
| Starter volts | 12 |
| Idle RPM | 800-2350 |
| Rated RPM | 2200 |
Transmission Information of Challenger, MT665B
Transmission variants 1
| Transmission | TechStar |
|---|---|
| Oil capacity | 70.8 qts [67.0 L] |
| Type | Continuously variable transmission (CVT) |
| Gears | Infinite forward and reverse (2-range) |
Transmission variants 2
| Type | Power shift |
|---|---|
| Gears | 18 forward and 9 reverse |
- Continuously variable transmission (CVT)
- 18-speed power shift
Mechanical Specs of Challenger, MT665B
- Cab standard with heat and A/C. Optional pneumatic cab suspension and automatic climate control.
- Four-wheel drive
- Hydraulic wet disc brakes
- Power steering
| Final drives | Inboard planetary |
|---|---|
| Trailer brakes(optional) | Hydraulic |
| Differential lock | Electrohydraulic front and rear |
Power Information of Challenger, MT665B
| Engine RPM | 540@2037 |
|---|---|
| Rear PTO | Independent |
| Rear PTO(optional) | 1000 (1.375) |
| Rear PTO(optional) | 540/540E |
| Clutch | Electro-hydraulic wet disc |
| Clutch(optional) | 540E@ 1598 |
| Clutch(optional) | 1000 (1.75) |
| Rear PTO Type | 540 (1.375) |
| Rear PTO Type(optional) | 1000@2031 |
Hydraulics Specifications of Challenger, MT665B
| Type | Pressure flow compensated (PFC) |
|---|---|
| Total flow | 39 gpm [147.6 lpm] |
| Valves | 4 to 6 |
| Capacity | 26.4 gal [99.9 L] |
| Pressure | 2900 psi [200.0 bar] |
Three-Point Hitch of Challenger, MT665B
| Rear Type | III |
|---|---|
| Rear Type(optional) | 12,100 lbs [5488 kg] |
| Front lift | 7,700 lbs [3492 kg] |
| Rear lift (at 24"/610mm) | 15,600 lbs [7076 kg] |
| Front Hitch(optional) | II |
Electrical System of Challenger, MT665B
| Ground | Negative |
|---|---|
| Battery CCA | 775 |
| Batteries | 2 |
| Charging system | Alternator |
| Battery volts | 12 |
| Charging amps | 150 |
Where it sits
With 290 HP, the Challenger MT665B sits just above MT655B (260 HP) in Challenger's range. Its power puts it in the 94th percentile of 2000s models in our database (2822 machines).
Frequently asked questions
How much horsepower does the Challenger MT665B have?
The Challenger MT665B delivers 290 HP.
What years was the Challenger MT665B produced?
The Challenger MT665B was produced in 2005-2008.
What engine does the Challenger MT665B have?
The Challenger MT665B is powered by a Turbocharged diesel, 6-cylinder 24-valve engine.
What transmission does the Challenger MT665B use?
The Challenger MT665B uses a TechStar transmission.
Is the Challenger MT665B 4WD?
The Challenger MT665B is available in 4WD.