NAICS Code 33631 — Motor Vehicle Gasoline Engine and Engine Parts Manufacturing

NAICS Industry in the official 2022 North American Industry Classification System (U.S. Census Bureau). It contains 1 direct sub-code.

Code	33631
Title	Motor Vehicle Gasoline Engine and Engine Parts Manufacturing
Level	NAICS Industry (5-digit)
Edition	NAICS 2022 edition

Official definition (2022 NAICS)

This industry comprises establishments primarily engaged in (1) manufacturing and/or rebuilding motor vehicle gasoline engines and engine parts and/or (2) manufacturing and/or rebuilding carburetors, pistons, piston rings, and engine valves, whether or not for vehicular use.

Illustrative Examples:

Carburetors, all types, manufacturing

Crankshaft assemblies, automotive and truck gasoline engine, manufacturing

Cylinder heads, automotive and truck gasoline engine, manufacturing

Fuel injection systems and parts, automotive and truck gasoline engine, manufacturing

Gasoline engines for hybrid automotive vehicles manufacturing

Pistons and piston rings manufacturing

Manifolds (i.e., intake and exhaust), automotive and truck gasoline engine, manufacturing

Pumps (e.g., fuel, oil, water), mechanical, automotive and truck gasoline engine (except power steering), manufacturing

Timing gears and chains, automotive and truck gasoline engine, manufacturing

Valves, engine, intake and exhaust, manufacturing

This national industry shares the official Census description of 336310.

Where 33631 sits in the hierarchy

Level	Code	Title
Sector	31-33	Manufacturing
Subsector	336	Transportation Equipment Manufacturing
Industry Group	3363	Motor Vehicle Parts Manufacturing
NAICS Industry	33631	Motor Vehicle Gasoline Engine and Engine Parts Manufacturing

Codes under 33631

Code	Title
336310	Motor Vehicle Gasoline Engine and Engine Parts Manufacturing

Related NAICS Industry codes

• 33632 — Motor Vehicle Electrical and Electronic Equipment Manufacturing
• 33633 — Motor Vehicle Steering and Suspension Components (except Spring) Manufacturing
• 33634 — Motor Vehicle Brake System Manufacturing
• 33635 — Motor Vehicle Transmission and Power Train Parts Manufacturing
• 33636 — Motor Vehicle Seating and Interior Trim Manufacturing
• 33637 — Motor Vehicle Metal Stamping
• 33639 — Other Motor Vehicle Parts Manufacturing

Data: official 2022 NAICS structure, descriptions and Census concordances, U.S. Census Bureau — U.S. government works in the public domain (17 U.S.C. §105). Suggested reference, not an official determination.