Manufacturing of spark plugs (all types)

505 FACILITIES

Facility	City	State	Employees	Status
Detroit Manufacturing Systems LLC	Detroit	MI	500+	ACTIVE
Falconer Electronics, INC	Falconer	NY	20–99	ACTIVE
Gentex Corporation	Zeeland	MI	—	ACTIVE
Grote Industries INC	Madison	IN	500+	ACTIVE
Interconnect Wiring LLP	Fort Worth	TX	100–499	ACTIVE
Isspro, INC.	Portland	OR	20–99	ACTIVE
Mcl Industries, INC.	Pulaski	WI	100–499	ACTIVE
Whelen Engineering Company, INC.	Chester	CT	500+	ACTIVE
Xos Fleet INC	Los Angeles	CA	20–99	ACTIVE
Able 2 Products Company, INC.	Cassville	MO	20–99	ACTIVE
Aeroleds Holdings, LLC	Boise	ID	20–99	ACTIVE
Alliance Cable and Wire Harness LLC	Lindon	UT	—	ACTIVE
Alpha Aviation Components, INC.	North Hills	CA	—	ACTIVE
C E Niehoff & CO	Evanston	IL	—	ACTIVE
Champion Aerospace LLC	Liberty	SC	—	ACTIVE
Daico Industries, INC.	Carson	CA	—	ACTIVE
Diode Dynamics, L.l.c.	Saint Charles	MO	—	ACTIVE
Emergency Technology INC	Hudsonville	MI	100–499	ACTIVE
Ge Aviation Systems LLC	Vandalia	OH	100–499	ACTIVE
Hoffman Engineering, LLC	Stamford	CT	—	ACTIVE
Interlog Corporation	Anaheim	CA	—	ACTIVE
Julian Electrical Service & Engineering INC	Homer Glen	IL	—	ACTIVE
Luminar Technologies, INC	Orlando	FL	—	ACTIVE
Luminator Holding L.p	Plano	TX	—	ACTIVE
Motorcar Parts of America, INC	Torrance	CA	—	ACTIVE

FactoryRegistry lists 505 facilities whose primary industry classification is one of the 1 industry above. This is a list by industry, not a list of makers: Census reports that establishments in these industries produced spark plugs (all types), in the shares shown above, and does not say which establishments. Where a plant’s own website or a federal registry names what that plant makes, it appears on the plant’s own page with the source named.

The U.S. Census Bureau recorded this product line in 1 US manufacturing industry in the 2022 Economic Census, as the most specific line that industry reported, and withheld the establishment count for it.

These are counts of establishments by industry: the Economic Census publishes them as industry totals and never as a list of plants.

Part of Manufacturing of aircraft propellers and helicopter rotors, including blades and parts

Manufacturing of aircraft engine instruments, excluding flight Manufacturing of aircraft mechanical power transmission equipment for civilian and military aircraft

Industries

Transportation Equipment Manufacturers All product lines

NAPCS collection code 2029575000. Source for the product line, the establishment counts and the shares: U.S. Census Bureau, 2022 Economic Census (ECNNAPCSIND2022). Federal source data is public domain. Facility records are compiled separately by FactoryRegistry and carry their own sources.