Company lists · Data refreshed September 2026

Top 25 Automotive assembly integrators based in the United States

Name: Automotive assembly integrators based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 1,047 companies tracked

RevenueBase identified 1,047 automotive assembly integrators headquartered in the United States as of September 2026 and tracks 124,768 professional contacts across them, including 27,238 with verified work emails. Troy is the largest hub.

This list covers automotive assembly integrators headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 30, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 30, 2026 86% judged on-target in blind review

1,047Companies

124,768Contacts tracked

27,238Verified emails

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The 25 largest automotive assembly integrators based in the United States

Ranked by team size

Top 25 of 1,047 automotive assembly integrators based in the United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to automotive assembly integrators: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Lear Corporation	Partial evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	10001+	40,502 contacts →
	Partial evidence “Lear Corporation (NYSE: LEA) is a global automotive leader in Seating and E-Systems.” Source: RevenueBase Database · checked Sep 30, 2026
2	DENSO	Partial evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	10001+	14,133 contacts →
	Partial evidence “DENSO is one of the world's largest automotive suppliers with a 75-year history of providing advanced automotive systems and technology to automakers worldwide.” Source: RevenueBase Database · checked Sep 30, 2026
3	IAC Group	Partial evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,634 contacts →
	Partial evidence “Headquartered in Luxembourg, International Automotive Components (IAC) Group is a leading global supplier of automotive components and systems, including instrument panels…” Source: RevenueBase Database · checked Sep 30, 2026
4	Yazaki North America	Partial evidence	Canton, MI, United StatesHQ checked Sep 30, 2026	10001+	5,183 contacts →
	Partial evidence “Yazaki is a global leader in the research, development and delivery of vehicle power and data solutions for automotive applications.” Source: RevenueBase Database · checked Sep 30, 2026
5	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 30, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 30, 2026
6	Inteva Products	Partial evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,302 contacts →
	Partial evidence “Inteva Products is a leading global automotive supplier known for delivering innovative, reliable, environmentally friendly products that enhance vehicle quality, safety, and…” Source: RevenueBase Database · checked Sep 30, 2026
7	SRG Global	Partial evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,981 contacts →
	Partial evidence “SRG Global® is one of the world’s leading manufacturers of integrated, functional decorative systems for the automotive, mobility, and commercial truck industries.” Source: RevenueBase Database · checked Sep 30, 2026
8	Caresoft Global	Partial evidence	Livonia, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,860 contacts →
	Partial evidence “We are a global engineering solutions company working closely with major Automotive, On-Highway, Agriculture & Construction Equipment Manufacturers and Tier-I Suppliers to solve…” Source: RevenueBase Database · checked Sep 30, 2026
9	Autokiniton	Partial evidence	New Boston, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,437 contacts →
	Partial evidence “At AUTOKINITON, we’re more than just an automotive supplier, we’re the backbone of vehicle performance and safety.” Source: RevenueBase Database · checked Sep 30, 2026
10	Android Industries	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,404 contacts →
	Partial evidence “Voltava was formed in December 2025 through the combination of Detroit Manufacturing Systems, Android Industries and Avancez Assembly.” Source: RevenueBase Database · checked Sep 30, 2026
11	JR Automation	Partial evidence	Holland, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,386 contacts →
	Partial evidence “JR Automation is a leading global integrator of custom automated systems for manufacturing and distribution environments around the world.” Source: RevenueBase Database · checked Sep 30, 2026
12	Commercial Vehicle Group, INC	Partial evidence	New Albany, OH, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,372 contacts →
	Partial evidence “CVG is a leading supplier of warehouse automation and robotic assemblies, electric vehicle assemblies, electrical wire harnesses, seating systems, mechanical assemblies…” Source: RevenueBase Database · checked Sep 30, 2026
13	Bastian Solutions	Indirect evidence	Carmel, IN, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,262 contacts →
	Indirect evidence “Bastian Solutions, a Toyota Automated Logistics company, is a trusted supply chain integration partner committed to providing their clients a competitive advantage by designing…” Source: RevenueBase Database · checked Sep 30, 2026
14	Summit Polymers	Partial evidence	Portage, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,150 contacts →
	Partial evidence “Summit Polymers is a leading Tier 1 Automotive Supplier of automotive interior systems.” Source: RevenueBase Database · checked Sep 30, 2026
15	Challenge Manufacturing	Strong evidence	Walker, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,137 contacts →
	Strong evidence “Founded in 1981, Challenge Manufacturing is a leading global Tier 1 supplier of complex assemblies and engineered metal formed products to the automotive industry.” Source: RevenueBase Database · checked Sep 30, 2026
16	ARI	Indirect evidence	East Peoria, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	979 contacts →
	Indirect evidence “ARi is a global engineering firm headquartered in East Peoria, Illinois, USA offering services for: Embedded Software, Product Engineering, Manufacturing Engineering and Testing &…” Source: RevenueBase Database · checked Sep 30, 2026
17	Convergix Automation Solutions	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	501-1,000	942 contacts →
	Indirect evidence “Convergix Automation Solutions designs, engineers and integrates hardware and software to automate its customers' operations.” Source: RevenueBase Database · checked Sep 30, 2026
18	Dakkota Integrated Systems	Indirect evidence	Holt, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	895 contacts →
	Indirect evidence “Dakkota Integrated Systems is a company with world-class products that are designed, engineered, and manufactured by a diverse team of talented employees.” Source: RevenueBase Database · checked Sep 30, 2026
19	JAC Products	Indirect evidence	Pontiac, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	798 contacts →
	Indirect evidence “Passions Made Possible.” Source: RevenueBase Database · checked Sep 30, 2026
20	Fujikura Automotive America	Partial evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	765 contacts →
	Partial evidence “The Fujikura Group offers a wide range of automotive products, including wire-harnesses, several types of sensors, and electronic products.” Source: RevenueBase Database · checked Sep 30, 2026
21	Edscha	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	713 contacts →
	Partial evidence “Founded in 1870, Edscha has developed into the world’s largest automotive supplier of hinge systems.” Source: RevenueBase Database · checked Sep 30, 2026
22	GHSP	Partial evidence	Holland, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	686 contacts →
	Partial evidence “GHSP is a leading global technology supplier of mechatronic solutions to the automotive industry.” Source: RevenueBase Database · checked Sep 30, 2026
23	Motus Integrated Technologies	Indirect evidence	Holland, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	684 contacts →
	Indirect evidence “Motus Integrated Technologies is a dynamic, half-billion-dollar global leader in manufacturing high-quality headliners, interior trim, and fiber solution products for the…” Source: RevenueBase Database · checked Sep 30, 2026
24	Jvis USA	Partial evidence	Shelby Township, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	602 contacts →
	Partial evidence “When it comes to the world of automotive components, JVIS has continued to be the supplier of choice for leading global brands.” Source: RevenueBase Database · checked Sep 30, 2026
25	Webasto Americas	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	600 contacts →
	Indirect evidence “WeAreWebasto A key region for #WebastoGroup, Webasto Americas is headquartered in Auburn Hills, Michigan, and is home to approximately employees across the U.S.” Source: RevenueBase Database · checked Sep 30, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: automotive assembly integrators. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names automotive assembly integrators.
Partial evidence: Its own public description names part of automotive assembly integrators, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive assembly integrators. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,047 automotive assembly integrators based in the United States

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Automotive assembly integrators based in the United States at a glance

As of Sep 30, 2026

21.8%Verified-email coverage

119.2Average contacts per company

11-50Median size (employees)

1.6%Largest-city concentration · Troy

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

312

11-50

382

51-200

204

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,047 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among automotive assembly integrators, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “automotive assembly integrators”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names automotive assembly integrators), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among automotive assembly integrators, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 27,238 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names automotive assembly integrators, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many automotive assembly integrators are there based in the United States?

RevenueBase identified 1,047 automotive assembly integrators headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Lear Corporation, headquartered in Southfield, tops this list with the largest team on record.

Which city has the most automotive assembly integrators?

Troy leads with 17 headquartered companies, followed by Auburn Hills (15) and Grand Rapids (15).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 27,238 verified decision-maker contacts tracked across these 1,047 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.