Company lists · Data refreshed September 2026

Top 25 Automotive plant engineering companies based in the United States

Name: Automotive plant engineering companies based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 418 companies tracked

RevenueBase identified 418 automotive plant engineering companies headquartered in the United States as of September 2026 and tracks 27,531 professional contacts across them, including 5,012 with verified work emails. Auburn Hills is the largest hub.

This list covers automotive plant engineering companies 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 16, 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 16, 2026 86% judged on-target in blind review

418Companies

27,531Contacts tracked

5,012Verified emails

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The 25 largest automotive plant engineering companies based in the United States

Ranked by team size

Top 25 of 418 automotive plant engineering companies based in the United States, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to automotive plant engineering companies: 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	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 16, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 16, 2026
2	Caresoft Global	Strong evidence	Livonia, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,860 contacts →
	Strong 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 16, 2026
3	GRAY	Partial evidence	Lexington, KY, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,477 contacts →
	Partial evidence “Founded by James Norris and Lois Howard Gray in 1960, Gray is a family-owned, fully integrated industrial design-builder specializing in engineering, architecture, construction…” Source: RevenueBase Database · checked Sep 16, 2026
4	Autokiniton	Partial evidence	New Boston, MI, United StatesHQ checked Sep 16, 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 16, 2026
5	US Farathane	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	1,163 contacts →
	Indirect evidence “At US Farathane, we design and manufacture highly engineered plastic injection-molded components, make them available to you in a variety of sizes, shapes, and designs and supply…” Source: RevenueBase Database · checked Sep 16, 2026
6	GHSP	Partial evidence	Holland, MI, United StatesHQ checked Sep 16, 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 16, 2026
7	ADAC	Partial evidence	Grand Rapids, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	636 contacts →
	Partial evidence “ADAC is a supplier of engineered products to the world automotive industry.” Source: RevenueBase Database · checked Sep 16, 2026
8	Jvis USA	Partial evidence	Shelby Township, MI, United StatesHQ checked Sep 16, 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 16, 2026
9	Jtekt Automotive North America	Indirect evidence	Greenville, United StatesHQ checked Sep 16, 2026	201-500	539 contacts →
	Indirect evidence “JTEKT Corporation was established in January 2006 through the merger of Koyo Seiko Co, Ltd, a world-class bearing manufacturer, and Toyoda Machine Works, Ltd, a machine tool…” Source: RevenueBase Database · checked Sep 16, 2026
10	BOS Automotive Products, INC	Partial evidence	Rochester Hills, MI, United StatesHQ checked Sep 16, 2026	51-200	500 contacts →
	Partial evidence “Bos Automotive is an automotive company based out of 2956 Waterview Drive, Rochester Hills, Michigan, United States.” Source: RevenueBase Database · checked Sep 16, 2026
11	Aisin North Carolina Corporation	Indirect evidence	Durham, NC, United StatesHQ checked Sep 16, 2026	1,001-5,000	452 contacts →
	Indirect evidence “On April 1, 2021, AW North Carolina became AISIN North Carolina, part of AISIN Group in the Americas, which includes some employees, 43 manufacturing, sales and R&D Centers.” Source: RevenueBase Database · checked Sep 16, 2026
12	Electroimpact	Indirect evidence	Mukilteo, WA, United StatesHQ checked Sep 16, 2026	201-500	443 contacts →
	Indirect evidence “Electroimpact is a highly experienced provider of factory automation and tooling solutions.” Source: RevenueBase Database · checked Sep 16, 2026
13	Arvin Sango INC	Indirect evidence	Madison, IN, United StatesHQ checked Sep 16, 2026	501-1,000	433 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
14	Ficosa North America	Indirect evidence	Detroit, United StatesHQ checked Sep 16, 2026	5,001-10,000	370 contacts →
	Indirect evidence “Ficosa began operating in the USA in 1995, through a technical-commercial office in Michigan, which was nearby the decision centres of the North-American car makers in Detroit.” Source: RevenueBase Database · checked Sep 16, 2026
15	Paslin	Indirect evidence	Warren, MI, United StatesHQ checked Sep 16, 2026	501-1,000	359 contacts →
	Indirect evidence “Since 1937, Paslin has been a leading innovator in the concept, design, construction and deployment of manufacturing assembly and automation systems.” Source: RevenueBase Database · checked Sep 16, 2026
16	Artiflex Manufacturing, INC	Indirect evidence	Grand Rapids, MI, United StatesHQ checked Sep 16, 2026	501-1,000	324 contacts →
	Indirect evidence “ArtiFlex Manufacturing is a global leader in design, tooling, automation, past model service, factory assist, and low-volume tooling and production solutions.” Source: RevenueBase Database · checked Sep 16, 2026
17	Koops Automation Systems	Indirect evidence	Holland, MI, United StatesHQ checked Sep 16, 2026	201-500	277 contacts →
	Indirect evidence “Specializing in factory automation systems, Koops designs and builds innovative special machines and automated equipment for leading, world-class manufacturers across a broad…” Source: RevenueBase Database · checked Sep 16, 2026
18	Futuris Automotive	Indirect evidence	Oak Park, MI, United StatesHQ checked Sep 16, 2026	5,001-10,000	224 contacts →
	Indirect evidence “Futuris Group designs and develops JIT solutions, from initial styling concepts to large volume production for complete seating and interior trim systems.” Source: RevenueBase Database · checked Sep 16, 2026
19	Gecom Corporation	Partial evidence	Greensburg, IN, United StatesHQ checked Sep 16, 2026	201-500	216 contacts →
	Partial evidence “GECOM Corporation was established in Greensburg, Indiana in 1987 to manufacture high-quality door locking mechanisms for the Automotive industry.” Source: RevenueBase Database · checked Sep 16, 2026
20	Minth North America, INC	Partial evidence	Wixom, MI, United StatesHQ checked Sep 16, 2026	1,001-5,000	195 contacts →
	Partial evidence “Minth Group stands as a global leader in the manufacturing of exterior and structural automotive parts.” Source: RevenueBase Database · checked Sep 16, 2026
21	JR Automation- Esys Division	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 16, 2026	51-200	183 contacts →
	Indirect evidence “Esys Automation, a JR Automation company, is a leading full-service automation solutions provider, specializing in vehicle assembly applications in areas such as press…” Source: RevenueBase Database · checked Sep 16, 2026
22	Aisin Automotive Casting Tennessee, INC	Indirect evidence	Clinton, TN, United StatesHQ checked Sep 16, 2026	501-1,000	165 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
23	Edgewater Automation	Indirect evidence	St Joseph, MI, United StatesHQ checked Sep 16, 2026	201-500	145 contacts →
	Indirect evidence “Edgewater Automation designs and builds global factory automation systems.” Source: RevenueBase Database · checked Sep 16, 2026
24	Enovapremier, LLC	Partial evidence	Louisville, KY, United StatesHQ checked Sep 16, 2026	201-500	135 contacts →
	Partial evidence “EnovaPremier, LLC is an automotive company based out of 1630 Lyndon Farm Court Suite 100, Louisville, Kentucky, United States.” Source: RevenueBase Database · checked Sep 16, 2026
25	Knight Global	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 16, 2026	51-200	132 contacts →
	Partial evidence “Knight Global began in 1984 as a specialty design/build shop, solving specific manufacturing problems for the automotive industry in Detroit.” Source: RevenueBase Database · checked Sep 16, 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 plant engineering companies. 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 plant engineering companies.
Partial evidence: Its own public description names part of automotive plant engineering companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive plant engineering companies. 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 418 automotive plant engineering companies based in the United States

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Automotive plant engineering companies based in the United States at a glance

As of Sep 16, 2026

18.2%Verified-email coverage

65.9Average contacts per company

11-50Median size (employees)

2.2%Largest-city concentration · Auburn Hills

Sep 16, 2026Page data refreshed

Companies by employee count

1-10

158

11-50

113

51-200

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 418 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 plant engineering companies, 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 plant engineering companies”. 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 plant engineering companies), 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 plant engineering companies, 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, 5,012 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 16, 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 plant engineering companies, 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 plant engineering companies are there based in the United States?

RevenueBase identified 418 automotive plant engineering companies 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?

Flex-N-Gate, headquartered in Urbana, tops this list with the largest team on record.

Which city has the most automotive plant engineering companies?

Auburn Hills leads with 9 headquartered companies, followed by Troy (9) and Grand Rapids (7).

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 5,012 verified decision-maker contacts tracked across these 418 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 16, 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.