NAICS 336350 Quarterly Industry Report
Motor Vehicle Transmission and Power Train Parts Manufacturing
Comprehensive industry research for valuation professionals, business owners, buyers, and lenders
NAICS Code: 336350Sector: 33Updated: Q1 2026
About This Report
This Fair Market Value industry report for NAICS 336350 draws on verified data from the U.S. Census Bureau[5], Bureau of Labor Statistics[6], and the Small Business Administration[7]. Our research team compiles establishment counts, employment data, and SBA eligibility criteria specific to motor vehicle transmission and power train component manufacturing. Reports are updated quarterly to reflect new Census releases and regulatory changes.
Industry Snapshot
Key metrics for the motor vehicle transmission and power train parts manufacturing industry.
Industry Definition & Overview
Motor Vehicle Transmission and Power Train Component Manufacturing (NAICS 336350) encompasses establishments primarily engaged in manufacturing and rebuilding motor vehicle transmissions, transmission parts, and power train components. Products include automatic and manual transmissions, continuously variable transmissions (CVTs), dual-clutch automated manual transmissions, torque converters, transfer cases for four-wheel drive, drive shafts and universal joints, constant velocity (CV) joints and half shafts, and differential assemblies with ring and pinion gear sets. The U.S. Census Bureau[5] classifies this industry under motor vehicle parts manufacturing.
Roughly 405 active businesses employ an estimated 52,800 workers in this industry. Transmission assembly is second only to engine manufacturing in capital intensity among automotive powertrain operations. Major automakers operate captive transmission plants producing units exclusively for their own vehicle platforms, while independent Tier 1 suppliers like ZF, Aisin, and BorgWarner supply transmissions and driveline components across multiple OEM customers. Aftermarket remanufactured transmissions serve the vehicle repair market through a separate distribution channel.
Manufacturing processes include gear hobbing, shaving, and heat treatment for planetary gear sets; aluminum die casting and precision machining of transmission housings and valve bodies; torque converter welding and balancing; and final assembly integrating hundreds of components including clutch packs, bands, servos, sensors, and electronic control solenoids. Electric vehicle adoption directly affects this industry as battery-electric vehicles replace multi-speed transmissions with single-speed reduction gearboxes, shifting content per vehicle and production requirements. However, electric drive units incorporating motors, inverters, and reduction gears represent new products within this classification for manufacturers adapting to electrification.
What's Included in This Industry
- Automatic transmission assembly and manufacturing
- Manual and dual-clutch transmission production
- CVT and continuously variable transmission manufacturing
- Torque converter manufacturing and assembly
- Transfer case production for AWD and 4WD vehicles
- Drive shaft and universal joint manufacturing
- CV joint and half shaft production
- Differential and axle assembly manufacturing
- Transmission remanufacturing operations
- Electric vehicle reduction gearbox production
NAICS Classification Hierarchy
| Level | Description | Code |
|---|---|---|
| Subsector | Transportation Equipment Manufacturing | 336 |
| Industry Group | Motor Vehicle Parts Manufacturing | 3363 |
| NAICS Industry | Motor Vehicle Transmission and Power Train Parts Manufacturing | 33635 |
| National Industry | Motor Vehicle Transmission and Power Train Parts Manufacturing | 336350 |
Related NAICS Codes
| Code | Description | Relationship |
|---|---|---|
| 336310 | Motor Vehicle Gasoline Engine and Engine Parts Manufacturing | Manufactures gasoline engines that connect to the transmissions produced here at the engine-to-transmission bell housing interface in complete vehicle powertrain assemblies |
| 336340 | Motor Vehicle Brake System Manufacturing | Produces motor vehicle brake systems that work in conjunction with transmissions but classifies under a separate safety-critical component manufacturing code |
| 336330 | Motor Vehicle Steering and Suspension Components (except Spring) Manufacturing | Manufactures steering and suspension components rather than the drivetrain and power transmission components connecting engine output to driven wheels produced here |
| 336320 | Motor Vehicle Electrical and Electronic Equipment Manufacturing | Produces vehicle electrical equipment including transmission control modules and shift solenoids rather than the mechanical gearbox assemblies manufactured in this classification |
| 336390 | Other Motor Vehicle Parts Manufacturing | Manufactures other motor vehicle parts not specifically classified in transmission, engine, brake, or steering categories separate from the dedicated powertrain components produced here |
| 332991 | Ball and Roller Bearing Manufacturing | Produces ball and roller bearings installed within transmissions, differentials, and transfer cases but classifies under general bearing manufacturing rather than automotive powertrain |
Geographic Concentration
Top states by share of national establishments.
| # | State | % Est. | Total Est. |
|---|---|---|---|
| 1 | Michigan | 13.3% | 60 |
| 2 | California | 11.7% | 53 |
| 3 | Indiana | 9.3% | 42 |
| 4 | Illinois | 6.8% | 31 |
| 5 | Ohio | 5.1% | 23 |
| 6 | Texas | 4.2% | 19 |
| 7 | North Carolina | 4.0% | 18 |
| 8 | Tennessee | 3.3% | 15 |
| 9 | Florida | 3.1% | 14 |
| 10 | New York | 2.9% | 13 |
% Of Establishments
0%
13%
Source: County Business Patterns, U.S. Census Bureau[3]
SBA Lending Summary
48
Total SBA Loans
$47.3M
Total Loan Volume
$985K
Average Loan Size
12 yrs
Average Loan Term
9.53%
Average Interest Rate
1,016
Jobs Supported
Source: SBA 7(a) Program Data, U.S. Small Business Administration — FY 2025[4]
Key Insight: The SBA[7] sets the size standard for NAICS 336350 at 1,500 employees. Firms below this threshold qualify for small business set-aside contracts and SBA-backed lending programs. Federal procurement includes transmissions and driveline components for military vehicle fleet maintenance, remanufactured units for government vehicles, and transfer cases for tactical 4WD vehicles. The SBA's contracting programs[8] support manufacturers pursuing DLA and Army TACOM powertrain component contracts. Eligible businesses can access SBA 7(a) loans[9] for working capital, equipment, and acquisition financing, while 504 loans[10] support major fixed-asset purchases including real estate and heavy machinery.
Top SBA Lenders
| # | Lender | Loans | Volume | Avg Loan |
|---|---|---|---|---|
| 1 | First Bank | 16 | $36.0M | $2.3M |
| 2 | U.S. Bank, National Association | 8 | $6.3M | $784K |
| 3 | Wells Fargo Bank National Association | 8 | $3.5M | $436K |
| 4 | Northeast Bank | 8 | $1.1M | $140K |
| 5 | First Merchants Bank | 8 | $400K | $50K |
Frequently Asked Questions
Common questions about this industry.
What types of businesses are classified under NAICS 336350?
Manufacturers of motor vehicle transmissions, power train components, and driveline parts classify here. Products include automatic and manual transmissions, CVTs, torque converters, transfer cases, drive shafts, CV joints, and differential assemblies per the Census Bureau[5] classification.
How is the transmission manufacturing industry structured?
Roughly 405 businesses employ an estimated 52,800 workers per Census data[11]. Major automakers operate captive transmission plants while global Tier 1 suppliers including ZF, Aisin, and BorgWarner supply transmissions and driveline components to multiple OEM customers across vehicle platforms.
What is the SBA size standard for NAICS 336350?
The SBA[7] sets the threshold at 1,500 employees. Businesses with fewer than 1,500 average employees qualify as small for federal contracting preferences and SBA-backed financing programs including 7(a) and 504 loans.
What NAICS codes are related to transmission manufacturing?
Related codes include 336310 (Engines), 336340 (Brakes), 336330 (Steering and Suspension), 336320 (Vehicle Electrical), 336390 (Other Vehicle Parts), and 332991 (Bearings). Each covers other automotive systems or upstream component manufacturing distinct from transmission and powertrain assembly.
What industries interact with transmission manufacturers?
Automobile assemblers, parts wholesalers, repair shops, engine producers, and bearing manufacturers interact most directly. Captive powertrain plants supply their parent automaker while independent Tier 1 producers ship transmissions to multiple vehicle assembly plants under long-term supply agreements.
What activities are included in NAICS 336350?
Activities include gear hobbing and heat treatment for planetary gear sets, die casting and machining transmission housings, welding and balancing torque converters, assembling automatic transmissions with clutch packs and valve bodies, manufacturing CV joints and half shafts, producing drive shafts and universal joints, and remanufacturing used transmissions to factory specifications.
Can transmission manufacturers qualify for SBA loans?
Yes, firms below 1,500 employees qualify for SBA lending programs[8] including 7(a) and 504 loans. Gear hobbing machines, CNC machining centers, heat treatment furnaces, and transmission dynamometer test stands represent capital investments suited to SBA 504 equipment financing.
Where are transmission manufacturers concentrated?
Production concentrates heavily in the Midwest automotive corridor, with major plants in Michigan, Indiana, Ohio, and Kentucky. Transmission assembly requires close proximity to engine plants and vehicle assembly facilities for coordinated powertrain delivery. Remanufacturing operations distribute more broadly near population centers where used transmission cores are available for rebuilding through repair shop and salvage yard collection networks.
Sources & References
Government datasets and editorial sources used in this report.
- [1]U.S. Bureau of Labor Statistics, Quarterly Census of Employment and Wages bls.gov
- [2]U.S. Census Bureau, Economic Census census.gov
- [3]U.S. Census Bureau, County Business Patterns census.gov
- [4]U.S. Small Business Administration, SBA 7(a) Loan Program Data data.sba.gov
- [5]U.S. Census Bureau census.gov
- [6]Bureau of Labor Statistics bls.gov
- [7]Small Business Administration sba.gov
- [8]SBA's contracting programs sba.gov
- [9]SBA 7(a) loans sba.gov
- [10]504 loans sba.gov
- [11]Census data naicslist.com
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