Company lists · Data refreshed September 2026

Top 25 Tier one automotive suppliers based in the United States

Name: Tier one automotive suppliers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 716 companies tracked

RevenueBase identified 716 tier one automotive suppliers headquartered in the United States as of September 2026 and tracks 161,199 professional contacts across them, including 32,313 with verified work emails. Troy is the largest hub.

This list covers tier one automotive suppliers 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 19, 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 19, 2026 86% judged on-target in blind review

716Companies

161,199Contacts tracked

32,313Verified emails

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The 25 largest tier one automotive suppliers based in the United States

Ranked by team size

Top 25 of 716 tier one automotive suppliers based in the United States, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to tier one automotive suppliers: 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 19, 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 19, 2026
2	DENSO	Strong evidence	Southfield, MI, United StatesHQ checked Sep 19, 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 19, 2026
3	AAM	Partial evidence	Detroit, MI, United StatesHQ checked Sep 19, 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 19, 2026
4	IAC Group	Strong evidence	Southfield, MI, United StatesHQ checked Sep 19, 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 19, 2026
5	Genuine Parts Company	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 19, 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 19, 2026
6	Yazaki North America	Partial evidence	Canton, MI, United StatesHQ checked Sep 19, 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 19, 2026
7	TI Automotive	Strong evidence	Auburn Hills, MI, United StatesHQ checked Sep 19, 2026	10001+	4,781 contacts →
	Strong evidence “TI Automotive is the market-leading Tier 1 supplier formed through ABC Technologies’ acquisition of TI Fluid Systems in April 2025.” Source: RevenueBase Database · checked Sep 19, 2026
8	Flex-N-Gate	Indirect evidence	Urbana, IL, United StatesHQ checked Sep 19, 2026	10001+	4,298 contacts →
	Indirect evidence “Starting with aftermarket parts in 1956 and moving into O.E.” Source: RevenueBase Database · checked Sep 19, 2026
9	Inteva Products	Strong evidence	Troy, MI, United StatesHQ checked Sep 19, 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 19, 2026
10	Sumitomo Electric Wiring Systems, INC	Indirect evidence	Bowling Green, KY, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,244 contacts →
	Indirect evidence “There is power in a trusted brand.” Source: RevenueBase Database · checked Sep 19, 2026
11	North American Lighting, INC	Strong evidence	Paris, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	2,240 contacts →
	Strong evidence “North American Lighting, Inc, member of the Koito Group of Companies, is the largest Tier-1 automotive exterior lighting supplier in North America.” Source: RevenueBase Database · checked Sep 19, 2026
12	Tower International	Indirect evidence	New Boston, MI, United StatesHQ checked Sep 19, 2026	5,001-10,000	1,774 contacts →
	Indirect evidence “Tower International now AUTOKINITON!” Source: RevenueBase Database · checked Sep 19, 2026
13	Worldpac	Partial evidence	Oak Brook, IL, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,718 contacts →
	Partial 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 19, 2026
14	Dorman Products	Indirect evidence	Colmar, PA, United StatesHQ checked Sep 19, 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 19, 2026
15	Shape Corp	Indirect evidence	Grand Haven, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,636 contacts →
	Indirect evidence “We are thinkers, believers and doers.” Source: RevenueBase Database · checked Sep 19, 2026
16	Jtekt North America Corporation	Partial evidence	Greenville, SC, United StatesHQ checked Sep 19, 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 19, 2026
17	Standard Motor Products	Partial evidence	Long Island City, NY, United StatesHQ checked Sep 19, 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 19, 2026
18	BWI Group	Strong evidence	Dayton, OH, United StatesHQ checked Sep 19, 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 19, 2026
19	Toyoda Gosei Americas	Partial evidence	Troy, MI, United StatesHQ checked Sep 19, 2026	10001+	1,419 contacts →
	Partial evidence “Toyoda Gosei is a leading global manufacturer of rubber and plastic automotive components, safety systems and LEDs.” Source: RevenueBase Database · checked Sep 19, 2026
20	Android Industries	Indirect evidence	Auburn Hills, MI, United StatesHQ checked Sep 19, 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 19, 2026
21	Summit Polymers	Strong evidence	Portage, MI, United StatesHQ checked Sep 19, 2026	1,001-5,000	1,150 contacts →
	Strong evidence “Summit Polymers is a leading Tier 1 Automotive Supplier of automotive interior systems.” Source: RevenueBase Database · checked Sep 19, 2026
22	Challenge Manufacturing	Strong evidence	Walker, MI, United StatesHQ checked Sep 19, 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 19, 2026
23	TVH Parts CO	Indirect evidence	Olathe, KS, United StatesHQ checked Sep 19, 2026	501-1,000	1,009 contacts →
	Indirect evidence “Founded in 1969, the global TVH Parts Holding group now has 90 branches selling to customers in over 180 countries.” Source: RevenueBase Database · checked Sep 19, 2026
24	NYX INC	Indirect evidence	Livonia, MI, United StatesHQ checked Sep 19, 2026	501-1,000	906 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
25	Dakkota Integrated Systems	Indirect evidence	Holt, MI, United StatesHQ checked Sep 19, 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 19, 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: tier one automotive suppliers. 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 tier one automotive suppliers.
Partial evidence: Its own public description names part of tier one automotive suppliers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name tier one automotive suppliers. 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 716 tier one automotive suppliers based in the United States

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Tier one automotive suppliers based in the United States at a glance

As of Sep 19, 2026

20.0%Verified-email coverage

225.1Average contacts per company

51-200Median size (employees)

2.4%Largest-city concentration · Troy

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

154

11-50

175

51-200

145

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 716 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 tier one automotive suppliers, 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 “tier one automotive suppliers”. 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 tier one automotive suppliers), 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 tier one automotive suppliers, 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, 32,313 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 19, 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 tier one automotive suppliers, 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 tier one automotive suppliers are there based in the United States?

RevenueBase identified 716 tier one automotive suppliers 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 tier one automotive suppliers?

Troy leads with 17 headquartered companies, followed by Auburn Hills (13) and Grand Rapids (11).

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 32,313 verified decision-maker contacts tracked across these 716 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 19, 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.