This U.S. industry comprises establishments primarily engaged in manufacturing internal combustion engines (except automotive gasoline and aircraft).
Not in this code
Establishments primarily engaged in manufacturing gasoline motor vehicle engines and motor vehicle transmissions are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing.
Establishments primarily engaged in manufacturing gasoline aircraft engines and aircraft transmissions are classified in Industry 33641, Aerospace Product and Parts Manufacturing.
Establishments primarily engaged in manufacturing turbine and turbine generator set units are classified in U.S. Industry 333611, Turbine and Turbine Generator Set Units Manufacturing.
Establishments primarily engaged in manufacturing speed changers and industrial high-speed drives and gears are classified in U.S. Industry 333612, Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing.
Establishments primarily engaged in manufacturing mechanical power transmission equipment (except motor vehicle and aircraft) are classified in U.S. Industry 333613, Mechanical Power Transmission Equipment Manufacturing.
SBA size standard
A business is small under NAICS 333618 if it has no more than 1,500 employees (averaged over the last 24 months, including affiliates).
Source: SBA Table of Size Standards, effective 2023-03-17. Always check the size standard printed in the solicitation itself.
Who buys it
Departments that posted the most NAICS 333618 solicitations in the last two years:
61--MOTOR,ALTERNATING C · Department of Defense · posted September 28, 2026
28--DAMPER assembly,torsio · Department of Defense · posted September 28, 2026
28--ENGINE,GASOLINE · Department of Defense · posted September 28, 2026
29--FILTER element,intake · Department of Defense · posted September 28, 2026
29--RADIATOR,ENGINE coolan · Department of Defense · posted September 27, 2026
Cylinder sleeve · Department of Defense · posted September 25, 2026
29--CONNECTOR,EXHAUST pipe · Department of Defense · posted September 24, 2026
25--PARTS kit,seal replace · Department of Defense · posted September 24, 2026
Do this kind of work?
Send XL Eagle your price on an open other engine equipment manufacturing job. We write and submit the bid under our registrations. If we win, you do the work at your price. No fees.
NAICS 333618 is Other Engine Equipment Manufacturing. This U.S. industry comprises establishments primarily engaged in manufacturing internal combustion engines (except automotive gasoline and aircraft).
What is the SBA size standard for NAICS 333618?
The size standard for NAICS 333618 is 1,500 employees. Firms at or under it count as small businesses for contracts assigned this code.
Are there government contracts for other engine equipment manufacturing?
Yes. 3 government contracts are open under NAICS 333618 right now, and 231 were posted in the last 12 months.
Can I bid on NAICS 333618 contracts without registering in SAM.gov?
You need an active SAM.gov registration to win a federal contract in your own name. If you would rather skip that, XL Eagle can bid as the prime contractor using your price, and you do the work as our subcontractor.
XL Eagle