To help it in development of current and future advanced diesel engine platforms, Cummins is buying Jacobs Vehicle Systems. Best known for the Jake Brake, today Jacobs also provides cylinder deactivation, start-and-stop and thermal management technologies.
Cummins Buying Jacobs
Cummins is buying Jacobs Vehicle Systems — which today does far more than exhaust brakes — to help it advance on the road to zero emissions.

Jacobs has two primary manufacturing facilities in Bloomfield, Connecticut, and Suzhou, China, and Cummins expects to invest additional capacity and resources into those operations.
Photo: Jacobs
It's a homecoming of sorts; in 1961, Jacobs introduced the first engine brake for commercial vehicles, which was invented by Clessie Cummins, the founder of Cummins.
The acquisition is part of Cummins’ continuing investment in key technologies to reduce greenhouse gas emissions and lower the air quality impacts of their products. Engine braking and cylinder deactivation technologies will be key components to meeting current and future emissions regulations. This acquisition will allow Cummins to better integrate these vital components with its medium- and heavy-duty engines. Both Cummins and Jacobs have also been working with Tula to test more sophisticated algorithms for cylinder deactivation technology.
The acquisition of the Altra Industrial Motion subsidiary also secures engine components for current and aftermarket products, and expands the Cummins Turbo Technologies’ business unit, Cummins officials said in a press release.
Jacobs has two primary manufacturing facilities in Bloomfield, Connecticut, and Suzhou, China, and Cummins expects to invest additional capacity and resources into those operations. Jacobs’ manufacturing footprint will help Cummins meet requirements of the United States-Mexico-Canada Agreement and further invest in the U.S.
Jennifer Rumsey, Cummins’ president and chief operating officer, said she expects the transaction to provide financial returns and future growth opportunities through Jacobs’ engineering expertise, product portfolio and manufacturing capabilities.
Cummins plans to maintain Jacobs’ customer relationships.
Founded in 1961, Jacobs has roughly 600 employees and more than 60 years of experience in engine retarding and valve actuation systems for the commercial vehicle industry.
This acquisition is subject to customary closing conditions, including receipt of applicable regulatory approvals, and is expected to close in 2022.
More Equipment

SAF-Holland Redesigns Suspension Slider to Save Weight in On-Highway Trailers
SAF-Holland reengineered the UltraLite40 Slider for the ULX40 Mechanical Sliding Suspension and Axle System to reduce weight, improve durability, extend trailer life, and increase payload efficiency.
Read More →
Volvo Teases Next-Gen VNX as Platform Expansion Continues at TMC
Volvo Trucks North America highlighted new connectivity, safety tech and production investments at TMC. The OEM also signaled that a new heavy-haul flagship tractor is coming soon.
Read More →
SAF-Holland Introduces SmartSto System for Safer Tractor-Trailer Uncoupling
The system combines a fifth-wheel air release with stowage for air and electrical connections, helping prevent damage and reducing driver injury risk.
Read More →
SAF-Holland’s BrakeSight Aims to Take the Guesswork Out of Air Disc Brake Maintenance
New Haldex sensor technology from SAF-Holland integrates with telematics systems to give fleets continuous insight into air disc brake condition.
Read More →
Vanair Introduces Solar, Battery Power Ecosystem for Class 8 Trucks
The company’s expanded EPEQ ecosystem includes flexible solar panels, lithium batteries, hydraulic power systems, and a portable fast charger for electric trucks.
Read More →
Phillips Connect Expands Smart Trailer Platform with New Safety, Cargo and Equipment Intelligence
Phillips Connect Smart Trailer enhancements give fleets deeper operational insights from trailers -- even when another provider supplies basic GPS tracking.
Read More →
Accuride Unveils ProShield XGT Aluminum Wheel Coating at TMC
Accuride’s patent-pending surface-coating technology targets filiform corrosion and promises easier cleaning, longer-lasting gloss, and greater durability for aluminum truck wheels.
Read More →
Valvoline, Cummins Extend X15 Oil Drain Intervals to 100,000 Miles
New approval for Valvoline Premium Blue One Solution Gen2 allows fleets running Cummins X15 engines to extend oil drain intervals by up to 25,000 miles -- reaching intervals as high as 100,000 miles.
Read More →
A New Approach to Lighting Reliability
Peterson’s Genesis lighting system and repairable J560 connector target two persistent fleet problems: LED light failures and costly electrical connector downtime.
Read More →
The Hidden Cost of Delaying Truck Replacement
Many fleets extended truck replacement cycles during recent market disruptions. But holding equipment too long can lead to higher repair costs, longer downtime, and new operational risks.
Read More →
