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Caterpillar Diesel Forty Specs, Price and Review (2026)
Agricultural · 50.44 HP · Best for small farms and versatility
Power
50.44 HP (38 kW)
Fuel
Diesel
Transmission
Manual
PTO
43 HP @ 540 rpm
Weight
7,095 kg (7 t)
New price (est.)
$29,053 – $43,580
Est. used price
$10,169 – $30,506
Overview
As a agricultural tractor with 50.44 HP of power, the Caterpillar Diesel Forty is built for mid-size farm fieldwork, loader use, and hay operations. As a Caterpillar tractor, the Diesel Forty continues the brand's reputation for reliability and field performance. Below are the full Diesel Forty specs: engine specifications, transmission details, PTO ratings, hydraulic system data, and dimensions — everything you need for a buying decision. The Diesel Forty review data on this page is generated from specifications, helping you understand how it compares to similar tractors in its class. We include Diesel Forty price estimates — both new and used — to help you understand the cost of ownership and compare it against alternatives. Use the comparison tool below to set the Caterpillar Diesel Forty against similar models, or browse the alternatives section for other tractors in this HP range.
TractorFitâ„¢ Analysis
Overall score
Based on specs and use-case fit for Caterpillar Diesel Forty.
This model sits in the mid-range utility segment capable of loader work, mowing, and medium-acreage farming. A manual gearbox offers straightforward operation and lower complexity. Agricultural use cases include tillage, planting, hay, and material handling. PTO horsepower and speed options support mowers, hay tools, and other driven implements. Key specs include 50.44 HP, 43 HP PTO, 7 t operating weight, estimated used range $10,169–$30,506, and overall suitability 52/100.
Higher = simpler
Pros
- ✓Simple maintenance; mechanical transmission with lower repair costs.
- ✓High versatility: PTO and hydraulic options for multiple implements.
- ✓Strong value for money relative to power and features.
- ✓Adequate power for light duties and use in tight spaces.
- ✓Reliable manual transmission with low maintenance cost.
Cons
- •Limited power for large-scale work or heavy equipment.
- •Limited capacity for intensive loader work.
- •Modest power-to-weight ratio; less agility in traction and on slopes.
- •Basic hydraulic system; limited for demanding implements.
- •Heavy for the power output; may reduce efficiency in drawbar work.
Caterpillar Diesel Forty receives an overall suitability score of 52/100 from the TractorSuitability™ Engine. Ideal for small to mid-size farms (roughly 5–40 ha), light fieldwork, mowing, and properties where maneuverability matters, mixed use with multiple PTO and hydraulic implements. The suitability sub-scores allow an objective comparison of performance across farm sizes and use types. With 50.44 HP and around 7 tons weight, it fits small and mid-size farms where maneuverability and running costs matter. Loader work rates 31/100; fuel efficiency index is 59/100. Maintenance is classified as Low: Mechanical transmission and straightforward engine design; lower repair costs and easier DIY or general dealer servicing. Operating cost tier is Moderate: Reasonable fuel efficiency and maintenance; operating costs are in line with the power class. Versatility (71/100) reflects PTO and hydraulic options; cost tier (74/100) reflects value for money. It has relative limitations in: large farm, loader. Overall, it offers a specialized profile for its class. The TractorSuitability™ Engine uses manufacturer technical data only to compute these indices in an objective, reproducible way. We recommend comparing these scores with your specific acreage, crop type, and implement needs before deciding.
Real-world performance & ownership
Highlights
- Mid-range power fits mixed loader, mowing, and light tillage.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 7 t supports traction and ballast for heavy implements.
- Rated PTO output of 43 HP supports mowers, hay tools, and other driven implements.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $10,169–$30,506 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Trade-offs
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Best for
- Small to mid-size hay work
- Loader and grading
- Mixed farming and estate use
- Mixed tasks and attachment use
Not ideal for
- Heavy, continuous loader work
- Low-maintenance-first buyers
- Large-acreage row-crop or heavy tillage
Caterpillar Diesel Forty — Pros and Cons
Pros
- Mid-range power fits mixed loader, mowing, and light tillage.
- Manual transmission keeps design simple and ownership costs lower.
- Operating weight around 7 t supports traction and ballast for heavy implements.
- Rated PTO output of 43 HP supports mowers, hay tools, and other driven implements.
- Versatility index supports a wide range of tasks and attachments.
- Estimated used price range: $10,169–$30,506 USD.
- Farm orientation targets fieldwork, PTO work, and reliability.
Cons
- Maintenance complexity is rated on the higher side; factor in service access and parts availability.
- Loader and front attachment suitability is limited by design; best for lighter loader duties.
Used market insights
Estimated used price
$10,169 – $30,506 USD
High confidence
Estimate only. Actual prices vary by condition, hours, and region.
Buyer checklist
- Check engine and PTO hours; service history matters for long-term reliability.
- Confirm PTO speed (540/1000) and HP match your mowers, balers, or other implements.
- Inspect hydraulics and three-point hitch condition; repair costs can be high.
For used Caterpillar Diesel Forty, hours and service history matter. Confirm PTO and hydraulic operation, tire condition, and that implements match your HP and category.
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Technical Specifications
What this means: Gross HP and torque influence implement sizing; diesel is standard for farm use and longevity.
Engine
- Maximum Power (Gross)
- 50.44 HP (38 kW)
- Fuel Type
- Diesel
- Cooling
- Liquid
Compare with similar models
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Frequently asked questions
What is the weight of the Caterpillar Diesel Forty?
Operating weight is approximately 7,095 kg (7 tons).
Where can I find used Caterpillar Diesel Forty listings?
This page links to international marketplaces where you can search for used Caterpillar Diesel Forty tractors; listings are provided by third parties.
How much does a used Caterpillar Diesel Forty cost?
Used Caterpillar Diesel Forty tractors are often listed in the range of $10,169–$30,506 USD (high confidence). Actual prices depend on hours, condition, and region.
Does the Caterpillar Diesel Forty have a PTO?
Yes. The Caterpillar Diesel Forty has a rear PTO rated at 43 HP at 540 rpm.
What is the horsepower of the Caterpillar Diesel Forty?
The Caterpillar Diesel Forty is rated at 50.44 HP (gross) (38 kW).
Is the Caterpillar Diesel Forty good for loader work?
TractorFit scores rate this model as less suited for loader work (31/100). Check front axle capacity and loader compatibility for your intended use.
What is the Caterpillar Diesel Forty best used for?
As a farm tractor, the Caterpillar Diesel Forty is suited to fieldwork, PTO-driven implements, hay work, and general estate or small-farm tasks.
What type of transmission does the Caterpillar Diesel Forty have?
The Caterpillar Diesel Forty uses a manual transmission.
Caterpillar Diesel Forty: Complete Tractor Specifications and Technical Data
Overview
The Caterpillar Diesel Forty is a agricultural tractor from Caterpillar designed for agricultural operations. This comprehensive tractor specifications guide provides complete technical data, engine specifications, transmission details, dimensions, and hydraulic system capabilities. This agricultural tractor features a 50.44 HP diesel engine with manual transmission, delivering reliable performance. Our tractor database provides detailed specifications and technical data for the Caterpillar Diesel Forty, making it easy to compare with other models in the Caterpillar lineup or across different brands.
Engine Specifications
The Caterpillar Diesel Forty is powered by a diesel engine that delivers 50.44 HP for agricultural tasks. Tractor horsepower is a critical specification that determines the machine's ability to handle various implements. The engine specifications demonstrate Caterpillar's engineering expertise in creating efficient powerplants.
- Maximum Power: 50.44 HP (38 kW)
- Fuel Type: Diesel
- Cooling System: Liquid-cooled
Transmission Specifications
The Caterpillar Diesel Forty features a manual transmission system. Transmission type affects power delivery and operational efficiency. Different transmission types offer various advantages for different operating conditions and implement requirements.
Dimensions and Weight
Understanding tractor dimensions and weight is essential for storage, transport, and operational compatibility. The Caterpillar Diesel Forty's specifications help determine if the tractor fits your operational requirements.
- Weight: 7095 kg (15.642 lbs)
Power Take-Off (PTO)
The PTO system allows the tractor to transfer engine power to driven implements. PTO specifications, including horsepower and speed ratings, are essential when selecting implements.
- PTO Speed: 540 rpm
- PTO Power: 43 HP (32 kW)
Performance and Applications
The Caterpillar Diesel Forty delivers 50.44 HP performance for agricultural applications including plowing, planting, and harvesting. Tractor performance metrics, including power output, hydraulic capabilities, and dimensions, determine the machine's suitability for various tasks. When evaluating tractor performance, consider your specific application requirements, operating conditions, and implement needs to ensure the Caterpillar Diesel Forty matches your operational demands.
Technical Data Summary
This guide provides complete technical data and detailed specifications for the Caterpillar Diesel Forty. Key specifications include: 50.44 HP engine, manual transmission, 43 HP PTO, and 7095 kg weight. These tractor specifications enable accurate comparisons with other models. Our tractor database provides comprehensive data for thousands of models, making it easy to research specifications and compare tractors.
Conclusion
The Caterpillar Diesel Forty is a reliable agricultural tractor from Caterpillar, designed for modern farming operations. With its 50.44 HP diesel engine and manual transmission, weighing 7 tons, it provides dependable performance for agricultural tasks. This comprehensive guide offers all essential Caterpillar Diesel Forty tractor data and specifications for informed decision-making.
Conclusion
With 50.44 HP, the Caterpillar Diesel Forty is a model worth considering carefully for operators who need Small to mid-size hay work, Loader and grading, Mixed farming and estate use. Check the price range shown above and compare with similar models to ensure it fits your budget. Use our comparison tool to stack the Diesel Forty against other tractors in the same HP range before making a final decision.