The Pioneer of Modern Leak Testing

These days, the world is spinning at higher RPMs.

(Chinese Translation)

Especially the automotive world. What’s more, no matter how smooth or rocky a road the industry might be traveling, those in the manufacturing trenches, the true heroes, are expected to up their game.


To raise performance, regardless of time or circumstances.

And somehow they get it done. As production cycles shrink and assembly lines shift into high gear, they not only make the numbers, they make sure quality and integrity don’t suffer. It’s an honor to serve them.

Fast, accurate, reliable and repeatable leak testing is more critical than ever.

Uson responds with engineered leak and functional test solutions that achieve maximum flexibility while maintaining the highest quality. We provide such solutions for applications ranging from complete engines to fuel injectors, transmissions, brake components, cooling systems, electrical fittings and much more. Furthermore, our methodology eliminates false rejects while keeping defective products from getting to market. After 50 years in an industry we practically invented, we are still the race leader, the go-to provider of leak and flow testing for the world’s major automobile manufacturers, transportation companies and their suppliers. So when they’re required to go faster, we’re right beside them making sure it’s safe to step on the gas.  

Product Lines Engineered for Automotive Applications

Optima vT


The standard bearer.

Versatile multi-sensor leak and flow testers with advanced features and increased flexibility.

Learn more about Optima vT >



UIS (UIS) are precision engineered leak test systems for manual, semi-automatic and fully automated leak testing.

Learn more about UIS/Prex >


Qualitek mR


The proven standard for fast, reliable leak testing

Qualitek mR combines the latest advances in multi-range (mR) testing technology with the expertise and reliability of one of the premier names in testing.

Learn more about Qualitek mR >




The ultimate in testing performance, speed, flexibility and durability.

The fastest and most powerful testers on the market, the Vector family of testers raises performance to new levels of efficiency and productivity.

Learn more about Vector >


Automotive Device Leak Testing Applications

  • Power Steering
  • Lamps and Lenses
  • Axles
  • Cylinder Heads
  • Cooling Systems
  • Brakes
  • Emission Controls
  • Cylinder Blocks
  • Engine Blocks
  • Engine Assemblies
  • Miscellaneous
  • Total Engines
  • Exhaust Systems
  • Engine Subassemblies
  • Fuel Systems
  • Transmissions
  • Electrical
  • Intake Manifolds
Download Full Application List

Contact Us

Uson L.P. - Corporate

8640 N. Eldridge Parkway
Houston, TX 77041 USA

Tel: +1-281-671-2000
Fax: +1-281-671-2001


Uson UK – Europe

Western Way
Bury St. Edmunds
Suffolk, IP33 3SP United Kingdom

Tel: +44-1284-760606
Fax: +44-1284-763049


Uson – Detroit

31471 Utica Rd
Fraser, MI 48026 USA

Tel: +1-248-589-3100
Fax: +1-248-589-3103


Uson – China

Room 601, 567 Lan Gao Road
Shanghai, 200333, China

Main: 021-583 65859, 021-583 59187
Fax: 021-583 59185, 021-337 73559