Company lists · Data refreshed September 2026

Top 25 Automotive suppliers with engineering services based in the United States

Name: Automotive suppliers with engineering services 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 1,930 companies tracked

RevenueBase identified 1,930 automotive suppliers with engineering services headquartered in the United States as of September 2026 and tracks 197,832 professional contacts across them, including 41,876 with verified work emails. Troy is the largest hub.

This list covers automotive suppliers with engineering services 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

1,930Companies

197,832Contacts tracked

41,876Verified emails

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The 25 largest automotive suppliers with engineering services based in the United States

Ranked by team size

Top 25 of 1,930 automotive suppliers with engineering services 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 suppliers with engineering services: 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	Strong evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	10001+	14,133 contacts →
	Strong 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	Plexus Corp	Indirect evidence	Neenah, NC, United StatesHQ checked Sep 30, 2026	10001+	8,149 contacts →
	Indirect evidence “Since 1979, Plexus has been partnering with companies to create the products that build a better world.” Source: RevenueBase Database · checked Sep 30, 2026
4	AAM	Partial evidence	Detroit, MI, United StatesHQ checked Sep 30, 2026	10001+	7,954 contacts →
	Partial evidence “On February 3, 2026, Dauch Corporation (formerly American Axle & Manufacturing) acquired Dowlais Group plc and its subsidiaries – GKN Automotive and GKN Powder Metallurgy.” Source: RevenueBase Database · checked Sep 30, 2026
5	IAC Group	Strong evidence	Southfield, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	5,634 contacts →
	Strong 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
6	Genuine Parts Company	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 30, 2026	10001+	5,193 contacts →
	Partial evidence “Established in 1928, Genuine Parts Company is a leading global service provider of automotive and industrial replacement parts and value-added solutions.” Source: RevenueBase Database · checked Sep 30, 2026
7	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
8	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
9	Inteva Products	Strong evidence	Troy, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	3,302 contacts →
	Strong 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
10	Carquest Auto Parts	Partial evidence	Raleigh, NC, United StatesHQ checked Sep 30, 2026	10001+	2,657 contacts →
	Partial evidence “Carquest Auto Parts is owned and operated by Advance Auto Parts, Inc, the largest automotive aftermarket parts provider in North America, servicing both the do-it-yourself and…” Source: RevenueBase Database · checked Sep 30, 2026
11	Sumitomo Electric Wiring Systems, INC	Indirect evidence	Bowling Green, KY, United StatesHQ checked Sep 30, 2026	1,001-5,000	2,244 contacts →
	Indirect evidence “There is power in a trusted brand.” Source: RevenueBase Database · checked Sep 30, 2026
12	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
13	Stoneridge	Indirect evidence	Novi, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,871 contacts →
	Indirect evidence “Stoneridge, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
14	Caresoft Global	Strong evidence	Livonia, MI, United StatesHQ checked Sep 30, 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 30, 2026
15	Worldpac	Indirect evidence	Oak Brook, IL, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,718 contacts →
	Indirect evidence “Worldpac was formed in 1995 as a result of several acquisitions of the top tier import companies spanning over 30 years of service in the import aftermarket.” Source: RevenueBase Database · checked Sep 30, 2026
16	Dorman Products	Indirect evidence	Colmar, PA, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,651 contacts →
	Indirect evidence “Dorman was founded on the belief that people should have greater freedom to fix motor vehicles.” Source: RevenueBase Database · checked Sep 30, 2026
17	Shape Corp	Indirect evidence	Grand Haven, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “We are thinkers, believers and doers.” Source: RevenueBase Database · checked Sep 30, 2026
18	Jtekt North America Corporation	Partial evidence	Greenville, SC, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,599 contacts →
	Partial evidence “JTEKT North America is a global leader in advanced automotive technologies, providing innovative solutions to drive the future of mobility.” Source: RevenueBase Database · checked Sep 30, 2026
19	Standard Motor Products	Partial evidence	Long Island City, NY, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,495 contacts →
	Partial evidence “With over 100 years in business, SMP is a leading independent manufacturer and distributor of premium automotive replacement parts and a provider of custom-engineered solutions…” Source: RevenueBase Database · checked Sep 30, 2026
20	Dura Automotive Systems LLC	Strong evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,495 contacts →
	Strong evidence “Dura-Shiloh is a global mobility systems supplier specializing in the design, engineering and manufacturing of solutions that drive the evolution of mobility.” Source: RevenueBase Database · checked Sep 30, 2026
21	Henniges Automotive	Partial evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,456 contacts →
	Partial evidence “Henniges provides automotive original equipment manufacturers (OEMs) with sealing systems for doors, windows, trunks, lift gates, sunroofs and hoods.” Source: RevenueBase Database · checked Sep 30, 2026
22	Autokiniton	Strong evidence	New Boston, MI, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,437 contacts →
	Strong 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
23	BWI Group	Strong evidence	Dayton, OH, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,427 contacts →
	Strong evidence “BWI Group: Empowering Smart Mobility BWI Group is a global automotive Tier-1 supplier with a legacy spanning more than a century and with the vision of Empowering Smart Mobility.” Source: RevenueBase Database · checked Sep 30, 2026
24	Android Industries	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,404 contacts →
	Indirect 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
25	Consolidated Metco	Indirect evidence	Vancouver, WA, United StatesHQ checked Sep 30, 2026	5,001-10,000	1,190 contacts →
	Indirect evidence “ConMet, a division of Amsted Industries, has been advancing the commercial vehicle industry since 1964.” 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 suppliers with engineering services. 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 suppliers with engineering services.
Partial evidence: Its own public description names part of automotive suppliers with engineering services, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name automotive suppliers with engineering services. 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 1,930 automotive suppliers with engineering services based in the United States

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Automotive suppliers with engineering services based in the United States at a glance

As of Sep 30, 2026

21.2%Verified-email coverage

102.5Average contacts per company

11-50Median size (employees)

2.1%Largest-city concentration · Troy

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

703

11-50

542

51-200

323

201-500

139

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 1,930 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 suppliers with engineering services, 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 suppliers with engineering services”. 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 suppliers with engineering services), 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 suppliers with engineering services, 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, 41,876 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.

Automotive suppliers with engineering services by metro

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 suppliers with engineering services, 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 suppliers with engineering services are there based in the United States?

RevenueBase identified 1,930 automotive suppliers with engineering services 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 suppliers with engineering services?

Troy leads with 41 headquartered companies, followed by Auburn Hills (30) and Detroit (25).

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 41,876 verified decision-maker contacts tracked across these 1,930 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.