What Allison Transmission makes

Allison Transmission is the world's largest manufacturer of fully automatic transmissions for medium- and heavy-duty commercial vehicles and for medium- and heavy-tactical US defense vehicles. The core commercial portfolio spans the 1000 and 2000 Series for lighter medium-duty work, the 3000 and 4000 Series for heavier trucks and buses (the 4000 Series accommodates engines from 380 to 800 horsepower and up to 2,360 lb-ft of input torque), and the larger 6000, 8000, and 9000 Series for the heaviest vocational and off-highway duty. The company reports roughly 60 percent global market share in its segment and support across more than 150 countries.

Beyond conventional transmissions, Allison builds electrified propulsion. The eGen Power line of fully electric axles targets zero-emission trucks and buses, eGen Flex serves transit, and eGen Force is a defense-oriented electric drive rated up to 1,600 horsepower. Defense customers also draw on purpose-built units such as the X1100 (up to 1,500 hp) and the 3040MX. The aftermarket side runs on Allison Genuine Parts, ReTran remanufactured transmissions, Allison Approved Fluids, and the Allison HUB service network. As a maker of complete propulsion units rather than discrete components, Allison sits at the Tier 1 interface with vehicle OEMs, and its products carry long qualification and PPAP cycles typical of safety-critical drivetrain hardware.

Financial performance

Allison is a public company (NYSE: ALSN) with published results. For full-year 2024 it reported record net sales of $3,225 million, up 6 percent from $3,035 million in 2023, with operating income of $992 million, or 31 percent of net sales, and net income of $731 million on diluted earnings per share of $8.31. Those are unusually high margins for a drivetrain manufacturer and reflect the company's concentrated, high-value product mix.

Full-year 2025, reported in February 2026, showed net sales easing to roughly $3.0 billion as demand softened in Global Off-Highway and North America On-Highway, offset by growth in Defense and Outside North America On-Highway. Profitability held: net income was $623 million, or 21 percent of net sales, adjusted EBITDA reached $1,130 million at a record 37.5 percent margin, and the business generated $836 million of operating cash flow. The Defense end market grew to $267 million, a 26 percent increase year over year. In plain terms, revenue came off a 2024 record but the company stayed strongly profitable and cash-generative through a softer cycle.

Ownership and history

The company traces to 1915, when James A. Allison founded the Speedway Team Company in Indianapolis to support his Indianapolis 500 racing work; it became the Allison Engineering Company and was sold to General Motors in 1929 under a condition that its headquarters remain in Indianapolis, which they still do. Allison spent decades as a GM division before Carlyle and Onex acquired it in 2007. It went public in March 2012, listing on the New York Stock Exchange under the ticker ALSN, and remains independent and publicly traded, with a market capitalization near $9.3 billion. Headquarters are at One Allison Way, Indianapolis, Indiana, and the company employs roughly 4,000 people.

Leadership per the company's own materials and SEC filings: David S. Graziosi serves as Chair, President, and Chief Executive Officer; Frederick M. Bohley is President and Chief Operating Officer; and Scott Mell is Chief Financial Officer and Treasurer. On January 1, 2026, Allison completed its acquisition of the Off-Highway business of Dana Incorporated for approximately $2.7 billion, a move that expands the company into off-highway drive and motion systems.

Certifications and quality

Allison states that its USA Global Headquarters holds IATF 16949 certification, the automotive quality-management standard, with additional IATF 16949 certifications at its facilities in Brazil, Europe, Hungary, and India. The company also reports ISO 9001, ISO 14001, and ISO 45001 certifications across sites, along with ISO 21434:2021, the automotive cybersecurity engineering standard, reflecting the software content in modern transmission controls. Certificates are posted on the company's Policies and Certifications page. For direct-materials buyers, that multi-site IATF footprint is the sector baseline for a drivetrain supplier serving global OEM programs.

Known customers

Allison sells through vehicle OEMs and a global network of roughly 1,400 independent dealers and distributors, so most individual commercial customer names are not publicly attached to specific programs. The Defense segment is the exception: it is disclosed and quantified in the company's public filings.

Frequently asked questions

What does Allison Transmission make?

Allison Transmission makes fully automatic transmissions for medium- and heavy-duty commercial vehicles and for US defense vehicles, spanning its 1000 through 9000 Series. It also builds electric propulsion, including eGen Power electric axles, eGen Flex, and eGen Force, plus hybrid systems, ReTran remanufactured transmissions, and aftermarket parts and service. The company describes itself as the world's largest maker of fully automatic transmissions.

Who owns Allison Transmission?

Allison Transmission is a publicly traded company listed on the New York Stock Exchange under the ticker ALSN, with a market capitalization near $9.3 billion. It was a General Motors division for decades, was owned by private equity firms Carlyle and Onex from 2007, and went public in 2012.

What is Allison Transmission's annual revenue?

Allison reported record full-year 2024 net sales of $3,225 million with operating income of $992 million, a 31 percent operating margin. Full-year 2025 net sales eased to roughly $3.0 billion with net income of $623 million and a record 37.5 percent adjusted EBITDA margin. These are published figures from the company's SEC filings.

Where is Allison Transmission headquartered?

Allison Transmission is headquartered at One Allison Way in Indianapolis, Indiana. The company has kept its headquarters in Indianapolis since General Motors acquired it in 1929 under a condition requiring it. It employs roughly 4,000 people and operates in more than 150 countries.

Who are Allison Transmission's customers?

Allison's customers include the US Department of Defense, for which it supplies transmissions used in medium- and heavy-tactical vehicles, and a broad base of commercial vehicle OEMs across trucks, buses, RVs, fire and emergency, refuse, and vocational applications. Defense sales are disclosed and quantified in its SEC filings; most commercial OEM customer names are undisclosed per sector norm.

What certifications does Allison Transmission hold?

Allison states its USA Global Headquarters holds IATF 16949 certification, with additional IATF 16949 certifications at facilities in Brazil, Europe, Hungary, and India. It also reports ISO 9001, ISO 14001, ISO 45001, and ISO 21434:2021 certifications across its sites.

Last verified September 27, 2026. Is this your company? Request a correction.