NAICS code 333618: Other Engine Equipment Manufacturing

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).

Examples from the U.S. Census Bureau: Diesel and semidiesel engines manufacturing; Electric outboard motors manufacturing; Engines, diesel and semidiesel, manufacturing; Engines, diesel locomotive, manufacturing; Engines, internal combustion (except aircraft, nondiesel automotive), manufacturing; and Engines, natural gas, manufacturing.

Businesses mainly manufacturing gasoline motor vehicle engines and motor vehicle transmissions are classified in Industry Group 3363, Motor Vehicle Parts Manufacturing; manufacturing gasoline aircraft engines and aircraft transmissions are classified in Industry 33641, Aerospace Product and Parts Manufacturing; and manufacturing turbine and turbine generator set units are classified in U.S. Industry 333611, Turbine and Turbine Generator Set Units Manufacturing.

1,500 employees (average over the last 24 months), including affiliates. Source: 13 CFR 121.201, effective March 17, 2023.

SIC codes 3519 (Internal Combustion Engines, NEC, part) and 3699 (Electrical Machinery, Equipment, and Supplies, NEC, part), from the U.S. Census Bureau concordances (1987 SIC → 2002 NAICS, carried to 2022 NAICS).

333000 (Machinery mfg.) on Schedule C, line B, from the IRS list of principal business codes. The IRS code covers NAICS 333111–333998.

Federal agencies put a NAICS code on each solicitation in SAM.gov, and some states and cities use NAICS codes too. Add 333618 to your SAM.gov registration and to your bid alerts; PublicBeam emails new bids for the codes you choose every morning.