Emissions Systems INC
164 Sunnyside Ave, Crystal Lake, IL 60014
Operating signal within 12 months from two or more independent sources.
What they make
Analytical Laboratory Instrument Manufacturing334516Emissions Systems Inc. manufactures portable gas emissions analyzers and engine performance tuning equipment, including models 8000, 5003, 5002, and 5001. The company produces emissions testing units that measure engine exhaust gas and provides emissions testing software that interfaces with third-party data acquisition systems for dyno testing, along with engine mapping and tuning services focused on CO gas and air-fuel ratio optimization. EMS serves performance tuning customers including Porsche North America, dyno manufacturers, and military equipment manufacturers.
SUMMARIZED FROM THE COMPANY’S OWN WEBSITE
Where it is
Other plants nearby
| Facility | City | Industry | Status | Distance |
|---|---|---|---|---|
| Precision Vision, INC. | Woodstock | Surgical and Medical Instrument Manufacturing 339112 | ACTIVE | 8.0 KM |
| Mitchell Aircraft, LLC | Cary | Other Aircraft Parts and Auxiliary Equipment Manufacturing 336413 | ACTIVE | 7.6 KM |
| Standard Safety Equipment CO | Mchenry | Electromedical and Electrotherapeutic Apparatus Manufacturing 334510 | UNVERIFIED | 9.7 KM |
| Dod Technologies INC | Cary | Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables 334513 | ACTIVE | 9.0 KM |
| Snap-on Tools CO | Crystal Lake | Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals 334515 | LIKELY ACTIVE | 9.4 KM |
Also at this address
No other federal record shares this street address.
WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 8 FIELDS
Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.
| Source | Evidence | First seen | Last seen |
|---|---|---|---|
| COMPANY SITE | OPERATING | JUL 2026 | AUG 2026 |
| SAM GOV | OPERATING | NOV 2025 | NOV 2025 |
FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT
| FIELD | SOURCE | SIGNAL |
|---|---|---|
| ADDRESS LINE1 | SAM GOV | NOV 2025 |
| CAGE CODE | SAM GOV | NOV 2025 |
| CITY | SAM GOV | NOV 2025 |
| GEOM | CENSUS GEOCODER | JUL 2026 |
| NAME | SAM GOV | NOV 2025 |
| REGISTRATION EXPIRATION | SAM GOV | NOV 2025 |
| STATE | SAM GOV | NOV 2025 |
| WEBSITE | SAM GOV | NOV 2025 |
Status is computed from independent sources; nothing here is self-reported unless marked Claimed.


