![]() Tenneco Germany Tenneco Germany (formerly known as Heinrich Gillet) is a company that designs, manufactures, and markets automotive products for original equipment and aftermarket customers. | ![]() Tenneco Automotive Operating Tenneco Automotive Operating is a manufacturer of automotive systems and components. | Airgas Airgas is a company that produces and supplies industrial and medical gases, ammonia products, and process chemicals. | ||
Founding Date | Founding Date 1999 | Founding Date 1959 | Founding Date 1977 | Founding Date 1982 |
Type | Type Private | Type Subsidiary | Type Subsidiary | Type Subsidiary |
Tags | ||||
Locations | Locations Irving, US HQ | Locations Edenkoben, DE HQ | Locations Lake Forest, US HQ Mogi Mirim, BR Cambridge, CA Elkhart, US Jeffersonville, US Lansing, US Seward, US see more | Locations Radnor, US HQ |
Employees | Employees 2,5234% increase | Employees 9899% decrease | Employees 11,919 | Employees 18,000 |
Financial | ||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) €638.5m (FY, 2023) | Revenue (est.) N/A | Revenue (est.) $7.5b (Y, 2024) |
Operating ⚠ | ||||
Product Categories | Product Categories 20 (Jun, 2024) | Product Categories N/A | Product Categories N/A | Product Categories 5 (Feb, 2025) |
Trademarks (US) | Trademarks (US) 24 (Jun, 2024) | Trademarks (US) N/A | Trademarks (US) N/A | Trademarks (US) 84 (Feb, 2025) |

Tenneco Germany (formerly known as Heinrich Gillet) is a company that designs, manufactures, and markets automotive products for original equipment and aftermarket customers.
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Tenneco Automotive Operating is a manufacturer of automotive systems and components.
View companyAirgas is a company that produces and supplies industrial and medical gases, ammonia products, and process chemicals.
View company