Video: Caterpillar C4.4 Power Unit Designed for Flexibility

Introduced in 2014, the C4.4 power unit features DOC, DPF and SCR systems to meet Tier 4 Final emissions regulations

Apr 7, 2017
Latest in Diesel Engines
Why Fleets Rely on Diagnostic Solutions for Speedy and Accurate Repairs
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Why Fleets Rely on Diagnostic Solutions for Speedy and Accurate Repairs
July 1, 2025
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Isuzu Engines Celebrates 50 Years
May 7, 2025
Why Fleets Rely on Diagnostic Solutions for Speedy and Accurate Repairs
Sponsored Content
Why Fleets Rely on Diagnostic Solutions for Speedy and Accurate Repairs
July 1, 2025
Equipment Today's Annual Equipment Showcase highlights hundreds of today's latest product releases in earthmoving, attachments, lift equipment, worksite equipment, fleet maintenance, trucks and transportation, roadbuilding, and technology.
Equipment Today Releases 2025 Annual Equipment Showcase
March 24, 2025
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[VIDEO] Kubota Introduces New Generator, Engine to Round Out Product Lines
Diesel Engines
[VIDEO] Kubota Introduces New Generator, Engine to Round Out Product Lines
Designed to Perform. Built to Endure.
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Designed to Perform. Built to Endure.
More in Diesel Engines
Equipment
Yanmar Launches New Diesel Engine Series for Next-Generation Industrial Equipment
Yanmar USA
Yanmar introduces the 4TN86DHT engine lineup, offering 59 HP, fuel efficiency, and Tier 4/Stage V compliance for industrial machinery.
Yanmar 4 Tn86 Dht Engine
Equipment
Yanmar USA
Screenshot 2025 06 24 103724
Diesel Engines
Isuzu Engines Celebrates 50 Years
Isuzu Motors America
This year, 2025, marks 50 years of powering the construction, equipment rental, and off-road equipment markets for Isuzu.
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Fleet Maintenance
26 Products to Help You Master Fleet Maintenance
Don't let equipment performance problems slow productivity on your jobsite. Learn how to overcome these issues with Equipment Today's roundup of the latest fleet maintenance products available to help contractors refine maintenance operations.
Western Global's DEF550 offers a rugged and durable DEF tank solution that is engineered to withstand the harsh environments of rental, construction and fuel distribution operations.
Equipment
Equipment Today Releases 2025 Annual Equipment Showcase
Designed to highlight hundreds of next level solutions for challenge construction jobsites, this year's showcase delivers the top equipment solutions in eight main categories, all aimed at improving your business and its jobsite operations.
Equipment Today's Annual Equipment Showcase highlights hundreds of today's latest product releases in earthmoving, attachments, lift equipment, worksite equipment, fleet maintenance, trucks and transportation, roadbuilding, and technology.
Trucks & Accessories
Mack Trucks Announces New Rear Axle and Engine for MD Series
Mack Trucks Inc.
When paired with the 325 hp engine rating and the Allison 3000RDS transmission, the Mack MD is now capable of increased towing capacity if the customer has a trailer.
The new engine being offered is a Cummins B6.7 with up to 325 hp. The new rear axle is designed for a Gross Axle Weight Rating (GAWR) of up to 23,000 lbs.
Sustainability
Top 3 Things to Understand About Environmental Funding and Emissions Regulations
Engine Technology Forum
The changes in emissions regulations under the new administration come with hesitance and apprehension for many companies and contractors.
The uncertainty of the follow-through of previous regulations is gripping many industries, especially the construction and trucking industries.
Other Components
RoadFlex and Konexial Collaborate to Improve Fleet Fuel Risk Management
RoadFlex
RoadFlex and Konexial have teamed up to create an integrated fuel management solution designed to help fleets reduce costs, prevent fraud, and optimize operational efficiency.
The RoadFlex-Konexial partnership delivers a next-generation fuel management solution that ensures fleets stay ahead in an increasingly competitive industry.
Trucks & Accessories
3 Evolving Trends Shaping the Future of Work Trucks at WTW 2025
NTEA | The Association for the Work Truck Industry
Here is a round-up of just a few of the trends we saw at Green Truck Summit.
The Green Truck Summit at Work Truck Week 2025 was able to highlight and explain some of the emerging trends in the sustainable and technological sectors of the industry.
Dealers, Service Centers
Volvo Trucks North America Unveils Volvo D13 Variable Geometry Turbo Engine
Volvo Trucks North America
The new Volvo D13 VGT engine will be standard in the all-new Volvo VNR and customers will also be able to select in the all-new Volvo VNL day cab.
The Volvo D13 VGT engine is now available for order in the all-new Volvo VNR and the all-new Volvo VNL models.
Fleet Maintenance
The Smartest Operators Register Their Engines — Here’s Why
John Deere
Engine registration isn't just a formality; it's an investment in your equipment's future. Discover the value of this often-overlooked step.
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Diesel Engines
Why Ammonia Engines Haven't Taken the Lead Yet
Although there is an incentive to improve the ammonia engine and fuel capabilities and to create a better ammonia engine option, it has not been easy. Ammonia still has a way to go before it can be widely used in engines.
Although ammonia has not been fully nailed down as a fuel just yet, there is ongoing testing and research occurring to find out whether ammonia should be one of the top alternative fuels out there.
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